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1.
Najjar, Samar.
Couplage AFM/Raman et spectroscopie Raman exaltée par effet de pointe de nanostructures : Study of nanostructures with AFM/Raman coupling device and Tip Enhanced Raman Spectroscopy (TERS).
Degree: Docteur es, Chimie-physique, 2013, Université de Bordeaux I
URL: http://www.theses.fr/2013BOR14848 
► Pour mieux comprendre leurs propriétés, diverses nanostructures individuelles ont été étudiées à l’aide d’une technique couplant microscopie à force atomique et spectroscopie Raman confocale. Sous…
(more)
▼ Pour mieux comprendre leurs propriétés, diverses nanostructures individuelles ont été étudiées à l’aide d’une technique couplant microscopie à force atomique et spectroscopie Raman confocale. Sous excitation lumineuse polarisée, la composition chimique, la structure et la présence de défauts a pu être précisée dans des nanobâtonnets d’oxydes métalliques (ZnO et α-Fe2O3). Sous irradiation laser résonnante, les spectres de nanotubes de carbone monoparoi enrobés de polymères ont révélé notamment l’absence de transfert de charge polymère-nanotube et un effet de désolvatation. Finalement, des feuillets de graphène oxydé et des ADNs double-brin peignés ont pu être préparés et caractérisés par spectroscopie Raman exaltée par effet de pointe en atteignant une résolution spatiale latérale voisine du rayon de courbure de l’apex de la pointe utilisée (12 nm), bien plus faible que la limite de diffraction, ce qui ouvre la voie à de nouveaux travaux spectroscopiques à l’échelle nanométrique.
To better understand their properties, various nanostructures have been studied using a technique combining atomic force microscopy and confocal Raman spectroscopy. Under polarized light excitation, the chemical composition, the structure and the presence of defects has been described in metal oxides nanorods (ZnO et α-Fe2O3). Under resonant laser excitation, Raman spectra of polymer-wrapped single-walled carbon nanotubes have revealed the absence of polymer-nanotube charge transfer and an effect due to desolvation. Finally, graphene oxide sheets and combed double-stranded DNAs have been prepared and characterized using tip-enhanced Raman spectroscopy with a lateral spatial resolution down to the curvature radius of the apex of the used tip (12 nm), well below the diffraction limit, which opens new opportunities for spectroscopic works at the nanometer scale.
Advisors/Committee Members: Rodriguez, Vincent (thesis director), Bonhommeau, Sébastien (thesis director).
Subjects/Keywords: Spectroscopie Raman exaltée de pointe; Diffusion; Fe2O3 ZnO hématite nanotubes de carbone swnt graphène oxydé adn; Tip Enhanced Raman spectroscopie; Scattering; Fe2O3 ZnO hematite carbon nanotubes swnt graphene oxide dna
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APA (6th Edition):
Najjar, S. (2013). Couplage AFM/Raman et spectroscopie Raman exaltée par effet de pointe de nanostructures : Study of nanostructures with AFM/Raman coupling device and Tip Enhanced Raman Spectroscopy (TERS). (Doctoral Dissertation). Université de Bordeaux I. Retrieved from http://www.theses.fr/2013BOR14848
Chicago Manual of Style (16th Edition):
Najjar, Samar. “Couplage AFM/Raman et spectroscopie Raman exaltée par effet de pointe de nanostructures : Study of nanostructures with AFM/Raman coupling device and Tip Enhanced Raman Spectroscopy (TERS).” 2013. Doctoral Dissertation, Université de Bordeaux I. Accessed January 23, 2021.
http://www.theses.fr/2013BOR14848.
MLA Handbook (7th Edition):
Najjar, Samar. “Couplage AFM/Raman et spectroscopie Raman exaltée par effet de pointe de nanostructures : Study of nanostructures with AFM/Raman coupling device and Tip Enhanced Raman Spectroscopy (TERS).” 2013. Web. 23 Jan 2021.
Vancouver:
Najjar S. Couplage AFM/Raman et spectroscopie Raman exaltée par effet de pointe de nanostructures : Study of nanostructures with AFM/Raman coupling device and Tip Enhanced Raman Spectroscopy (TERS). [Internet] [Doctoral dissertation]. Université de Bordeaux I; 2013. [cited 2021 Jan 23].
Available from: http://www.theses.fr/2013BOR14848.
Council of Science Editors:
Najjar S. Couplage AFM/Raman et spectroscopie Raman exaltée par effet de pointe de nanostructures : Study of nanostructures with AFM/Raman coupling device and Tip Enhanced Raman Spectroscopy (TERS). [Doctoral Dissertation]. Université de Bordeaux I; 2013. Available from: http://www.theses.fr/2013BOR14848
Penn State University
2.
Sigamani, Nirmal Shankar.
Effect of carbon nanofillers on the microstructure and electromechanical properties of electroactive polymers.
Degree: 2015, Penn State University
URL: https://submit-etda.libraries.psu.edu/catalog/26623
► Both ionic and electronic electroactive polymers (EAPs) have displayed great potential as actuators. Current ionic EAPs have limited practical application due to their slow response…
(more)
▼ Both ionic and electronic electroactive polymers (EAPs) have displayed great potential as actuators. Current ionic EAPs have limited practical application due to their slow response time and their low blocked force; furthermore, their ion transport-based mechanism necessitates the presence of an electrolyte, which complicates issues of packaging and device lifetime. On the other hand, despite the advantages of electronic EAPs such as their efficient electromechanical coupling and relatively rapid response time, there are major obstacles blocking their transition to application as well; most notably, they require high actuation voltages (threshold voltage needed to generate electroactive strain) and they have low blocked stress (the stress at which the actuator stops moving). Hence, the main objective of this study was to develop a new kind of polymer nanocomposite for actuator applications that would exhibit simultaneous improvement in both electromechanical response and strain energy density. To fulfill this objective, existing PVDF-based electroactive polymers were modified using different types of
carbon nanofillers. An effort was made to observe the impact of these nanofillers on the microstructure of the polymer that would then lead to a better understanding of the maximum possible improvement of the electromechanical response.
As a first step, we investigated the impact of the 2-dimensional GO and reduced GO on the electromechanical response of PVDF, a polar polymer. The 1 wt % reduced-GO-PVDF nanocomposites showed a tremendous improvement in dielectric permittivity and electrical conductivity. The dielectric permittivity at 1 KHz increased almost eight fold, while the electrical conductivity showed an increase of four orders of magnitude in comparison to the corresponding values for the unmodified PVDF. The reduced GO-PVDF polymer films showed a bending actuation response with a DC electric field, thus demonstrating its potential as EAP. The mechanism responsible for this bending actuation response is determined to be electrostriction, because the strain (S11) exhibited a quadratic response with the applied electric field while Joule heating and Maxwell stress effects were shown to be negligible. The coefficient of electrostriction value (M1133) for the 1 wt % reduced GO-PVDF was found to be 1.7 x 10-16 (m2/V2), which is higher than that for most of the existing electrostrictive polymers like polyurethane and PVDF TrFE CTFE terpolymer, whose values lie in the range of 14 x 10-18 (m2/V2) to 8 x 10-18 (m2/V2).
Although coefficient of electrostriction of reduced GO-PVDF is higher than most of the existing electroactive polymers, the relatively high electrical conductivity and low breakdown limits their use for practical applications. So next step was to exploit the advantages of a conductive
carbon nanostructure while controlling its network to better impact its electrical properties which could also lead to higher breakdown strength. To achieve this, the impact of the hybridization between
SWNT and GO on the…
Advisors/Committee Members: Zoubeida Ounaies, Dissertation Advisor/Co-Advisor, Zoubeida Ounaies, Committee Chair/Co-Chair, Md Amanul Haque, Committee Member, Donghai Wang, Committee Member, Joshua Alexander Robinson, Committee Member.
Subjects/Keywords: Graphene Oxide; reduced graphene; carbon nanotubes; electroactive strain; electromechanical; hybrid SWNT-GO; chemical modification
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APA (6th Edition):
Sigamani, N. S. (2015). Effect of carbon nanofillers on the microstructure and electromechanical properties of electroactive polymers. (Thesis). Penn State University. Retrieved from https://submit-etda.libraries.psu.edu/catalog/26623
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Sigamani, Nirmal Shankar. “Effect of carbon nanofillers on the microstructure and electromechanical properties of electroactive polymers.” 2015. Thesis, Penn State University. Accessed January 23, 2021.
https://submit-etda.libraries.psu.edu/catalog/26623.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Sigamani, Nirmal Shankar. “Effect of carbon nanofillers on the microstructure and electromechanical properties of electroactive polymers.” 2015. Web. 23 Jan 2021.
Vancouver:
Sigamani NS. Effect of carbon nanofillers on the microstructure and electromechanical properties of electroactive polymers. [Internet] [Thesis]. Penn State University; 2015. [cited 2021 Jan 23].
Available from: https://submit-etda.libraries.psu.edu/catalog/26623.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Sigamani NS. Effect of carbon nanofillers on the microstructure and electromechanical properties of electroactive polymers. [Thesis]. Penn State University; 2015. Available from: https://submit-etda.libraries.psu.edu/catalog/26623
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Georgia
3.
Parsons, Christopher Joshua.
Methods for production and refinement of carbon nanomaterials.
Degree: 2014, University of Georgia
URL: http://hdl.handle.net/10724/28862
► Methods of synthesis, purification, and analysis of carbon nanomaterials are presented. Graphitic material is grown on Cu by CVD and by heat treatment of Cu…
(more)
▼ Methods of synthesis, purification, and analysis of carbon nanomaterials are presented. Graphitic material is grown on Cu by CVD and by heat treatment of Cu following deposition of silane-based SAMs. A solution of ferrocyanide and
ferricyanide was characterized by cyclic voltammetry using a Au working electrode. Suspensions of SWNTs were prepared and purified for the fabrication of electrodes on Ti/glass substrates coated with 3-APTES or OTS. Electrochemical characterization of
the electrodes was attempted using the same Fe solution as for the Au electrode. This caused a loss of conductivity for electrodes prepared with 3-APTES and an increase in resistance for those prepared with OTS. The effects of cyanide, acetate, sulfate,
and iodide solutions on SWNT network conductivity were examined. Sample characterization was carried out using SEM, AFM, UV-Vis/NIR and Raman spectroscopy, and a semiconductor characterization system.
Subjects/Keywords: Carbon nanotubes; CVD; graphene; AFM; SWNT; nanomaterials; electrochemistry; SEM; SERS
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APA (6th Edition):
Parsons, C. J. (2014). Methods for production and refinement of carbon nanomaterials. (Thesis). University of Georgia. Retrieved from http://hdl.handle.net/10724/28862
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Parsons, Christopher Joshua. “Methods for production and refinement of carbon nanomaterials.” 2014. Thesis, University of Georgia. Accessed January 23, 2021.
http://hdl.handle.net/10724/28862.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Parsons, Christopher Joshua. “Methods for production and refinement of carbon nanomaterials.” 2014. Web. 23 Jan 2021.
Vancouver:
Parsons CJ. Methods for production and refinement of carbon nanomaterials. [Internet] [Thesis]. University of Georgia; 2014. [cited 2021 Jan 23].
Available from: http://hdl.handle.net/10724/28862.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Parsons CJ. Methods for production and refinement of carbon nanomaterials. [Thesis]. University of Georgia; 2014. Available from: http://hdl.handle.net/10724/28862
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Illinois – Urbana-Champaign
4.
Nazareth, Vineet.
Thin-film single-walled carbon nanotube transistors fabricated using mechanical meniscus aligned arrays.
Degree: MS, 1200, 2012, University of Illinois – Urbana-Champaign
URL: http://hdl.handle.net/2142/34547
► Single-walled carbon nanotubes (SWNTs) are novel carbon nanostructures with unique properties that have made them highly attractive materials for research in nanotechnology. Due to their…
(more)
▼ Single-walled
carbon nanotubes (SWNTs) are novel
carbon nanostructures with unique properties that have made them highly attractive materials for research in nanotechnology. Due to their exceptional electrical, mechanical, optical and structural properties, SWNTs have potential applications in the fields of nanoelectronics, optoelectronics, sensory devices and other areas of nanoscience. However, several challenges need to be addressed before SWNTs can be considered as potential candidates for future nanoelectronic devices. In order to use SWNTs to fabricate high performance nanoelectronic devices on a large scale, it is highly desirable to have precisely placed, high density, aligned arrays of SWNTs having uniform electronic properties. This thesis demonstrates a post-synthesis, mechanical alignment technique to obtain precisely placed, high density, aligned arrays of SWNTs. By using an aqueous solution containing surfactant-encapsulated SWNTs dispersed in it, a meniscus is formed either between a capillary tube and a substrate or between two angled substrates of differing hydrophobicity. As the meniscus is mechanically dragged across the substrate, the SWNTs get pinned to the surface and are aligned by the mechanical torque along the direction of the meniscus drag. The alignment has been characterized on various hydrophilic and hydrophobic substrates and the optimum conditions required for
SWNT alignment have been studied. Techniques to eliminate the surfactants from the deposited
SWNT networks have also been discussed. Finally, a complementary metal-
oxide-semiconductor (CMOS) compatible fabrication process has been used to demonstrate thin-film
SWNT field-effect transistors fabricated by using the aligned
SWNT arrays as the active channel of the transistor.
Advisors/Committee Members: Lyding, Joseph W. (advisor).
Subjects/Keywords: single-walled carbon nanotubes (SWNTs); graphene; carbon nanotube alignment; thin-film transistors; SWNT field-effect transistors; surfactant removal from SWNT networks
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APA (6th Edition):
Nazareth, V. (2012). Thin-film single-walled carbon nanotube transistors fabricated using mechanical meniscus aligned arrays. (Thesis). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/34547
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Nazareth, Vineet. “Thin-film single-walled carbon nanotube transistors fabricated using mechanical meniscus aligned arrays.” 2012. Thesis, University of Illinois – Urbana-Champaign. Accessed January 23, 2021.
http://hdl.handle.net/2142/34547.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Nazareth, Vineet. “Thin-film single-walled carbon nanotube transistors fabricated using mechanical meniscus aligned arrays.” 2012. Web. 23 Jan 2021.
Vancouver:
Nazareth V. Thin-film single-walled carbon nanotube transistors fabricated using mechanical meniscus aligned arrays. [Internet] [Thesis]. University of Illinois – Urbana-Champaign; 2012. [cited 2021 Jan 23].
Available from: http://hdl.handle.net/2142/34547.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Nazareth V. Thin-film single-walled carbon nanotube transistors fabricated using mechanical meniscus aligned arrays. [Thesis]. University of Illinois – Urbana-Champaign; 2012. Available from: http://hdl.handle.net/2142/34547
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Wollongong
5.
Antiohos, Dennis.
Nanostructured carbon electrodes.
Degree: PhD, 2013, University of Wollongong
URL: ;
https://ro.uow.edu.au/theses/3908
► Supercapacitors are promising energy storage and power output technologies due to their improved energy density, rapid charge-discharge cycle, high cycle efficiency and long cycle…
(more)
▼ Supercapacitors are promising energy storage and power output technologies due to their improved energy density, rapid charge-discharge cycle, high cycle efficiency and long cycle life. Free standing poly(3,4-ethylenedioxythiophene) poly(styrene sulfonate) / single walled nanotube films have been characterised by scanning electron microscopy, Raman spectroscopy and thermo-gravimetric analysis to understand the physical properties of the films. Films with varying compositions of poly(3,4-ethylenedioxythiophene) / poly(styrene sulfonate) and single walled nanotubes were compared by electrochemical impedance spectroscopy, cyclic voltammetry and galvanostatic charge / discharge to understand their electrochemical properties. A comparison of the results shows that having single walled nanotubes dispersed throughout the polymer matrix increases the capacitance by 65 % and the energy density by a factor of 3 whilst achieving good capacity retention over 1000 cycles.
Graphene is sp2 hybridised carbon atoms in a honeycomb crystal lattice, which has attracted a lot of interest in materials science and condensed matter physics research due to its favourable electronic properties, abundance and low cost. Exfoliated graphene oxide which has also been partially reduced has been achieved using microwave irradiation through the use of a conventional microwave that has led to rapid expansion and a marked volume increase of the graphene oxide. This has enabled a porous material to be developed that can serve as a conductive scaffold and support for composite electrode materials.
Graphene based materials coupled with transition metal oxides are promising electrode materials in asymmetric supercapacitors owing to their unique properties which include high surface area, good chemical stability, electrical conductivity, abundance, and lower cost profile over time. A composite material consisting of graphene oxide exfoliated with microwave radiation (mw rGO), and manganosite (MnO) is synthesised in order to explore their potential as an electrode material. The composite material was characterised by scanning electron microscopy (SEM), x-ray diffraction (XRD), x-ray photoelectron spectroscopy (XPS), and Raman spectroscopy. Cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) was used to explore the process occurring at the electrode / electrolyte interface. Long term cyclability and stability was investigated using galvanostatic charge / discharge testing. From the resulting analysis, an asymmetric supercapacitor was constructed with the best composite containing 90% MnO- 10% mw rGO (w/w). The device exhibited a capacitance of 0.11 F/cm2 (51.5 F/g by mass) and excellent capacity retention of 82% after 15 000 cycles at a current density of 0.5 A/g.
Composites containing CNTs and graphene are materials of particular interest in the energy storage and conversion area due to their favourable properties which can result in unique optical, electrical, magnetic and chemical…
Subjects/Keywords: supercapacitor; graphene oxide; carbon nanotubes; electrochemistry; IPRI
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APA (6th Edition):
Antiohos, D. (2013). Nanostructured carbon electrodes. (Doctoral Dissertation). University of Wollongong. Retrieved from ; https://ro.uow.edu.au/theses/3908
Chicago Manual of Style (16th Edition):
Antiohos, Dennis. “Nanostructured carbon electrodes.” 2013. Doctoral Dissertation, University of Wollongong. Accessed January 23, 2021.
; https://ro.uow.edu.au/theses/3908.
MLA Handbook (7th Edition):
Antiohos, Dennis. “Nanostructured carbon electrodes.” 2013. Web. 23 Jan 2021.
Vancouver:
Antiohos D. Nanostructured carbon electrodes. [Internet] [Doctoral dissertation]. University of Wollongong; 2013. [cited 2021 Jan 23].
Available from: ; https://ro.uow.edu.au/theses/3908.
Council of Science Editors:
Antiohos D. Nanostructured carbon electrodes. [Doctoral Dissertation]. University of Wollongong; 2013. Available from: ; https://ro.uow.edu.au/theses/3908
Indian Institute of Science
6.
Ivaturi, Sameera.
Electron Filed Emission Studies of Nanostructured Carbon Materials.
Degree: PhD, Faculty of Science, 2018, Indian Institute of Science
URL: http://etd.iisc.ac.in/handle/2005/3251
► Field emission is the emission of electrons from a solid under an intense electric field, of the order of 109 V/m. Emission occurs by the…
(more)
▼ Field emission is the emission of electrons from a solid under an intense electric field, of the order of 109 V/m. Emission occurs by the quantum mechanical tunneling of electrons through a potential barrier to vacuum. Field emission sources offer several attractive features such as instantaneous response to field variation, resistance to temperature fluctuation and radiation, a high degree of focusing ability in electron optics, good on/off ratio, ballistic transport, and a nonlinear current-voltage relationship.
Carbon nanotubes (CNTs) are potential candidates as field emitters since they possess high aspect ratio and are chemically inert to poisoning, and physically inert to sputtering during field emission. They can carry a very high current density and do not suffer field-induced tip sharpening like metallic tips. In addition, the CNT field emitters have the advantage of charge transport through 1D channels and electron emission at the sharp tips due to large enhancement. But the injection of electrons from the back contact remains a technical challenge which requires binding of CNT emitters to metallic substrate. Also, detachment of the CNT from the substrate tends to occur with time. The electrically conducting mixtures of CNTs and polymer can provide an alternative route to address these issues in the field emission of CNTs. The composites can be casted on any substrate in desired shape and the polymer matrix provides necessary support.
The research work reported in this thesis includes the preparation of high quality multiwall
carbon nanotubes (MWCNTs), MWCNT-polystyrene (PS) composites, and experimental investigation on field emission properties of MWCNT¬PS composites in two different configurations. Electrical conductivity and percolation threshold of the MWCNT-PS composites are also investigated to ensure their high quality prior to the field emission studies. The study has been further extended to reduced
graphene oxide (rGO) coated on polymer substrate. The main results obtained in present work are briefly summarized below.
This thesis contains eight chapters.
Chapter 1 provides an overview of basics of field emission, and the potential of CNT and CNT-polymer composites as field emitters.
Chapter 2 deals with the concise introduction of various structural characterization tools and experimental techniques employed in this study.
Chapter 3 describes the synthesis of MWCNTs and characterization by using electron microscopy and Raman spectroscopy.
MWCNTs are synthesized by chemical vapor deposition (CVD) of toluene [(C6H5) CH3] and ferrocene [(C5H5)2 Fe] mixture at 980 °C. Here toluene acts as
carbon source material and ferrocene provides catalytic iron (Fe) particles. The MWCNT formation is based on the thermal decomposition of the precursor mixture. Scanning electron microscopy (SEM) characterization shows that the MWCNTs are closely packed and quite aligned in one direction. The average length of MWCNTs is about 200 μm and outer diameter lies in the range of 50-80 nm. The high quality of…
Advisors/Committee Members: Prasad, V (advisor).
Subjects/Keywords: Electron Field Emission; Quantum Mechanical Tunneling; Carbon Nanotubes; Nanostructured Carbon Materials; Multiwall Carbon Nanotubes (MWCNTs) - Synthesis; Multiwall Carbon Nanotube-Polystyrene Composites; Multiwall Carbon Nanotube-Polymer Composites; Multiwall Carbon Nanotubes - Field Emission; Carbon Nanotube-Zinc Oxide Hybrids; Graphene Oxide; CNT-ZnO Hybrids; MWCNT-Polymer Composites; Multi-wall Carbon Nanotube-Polymer Composites; Field Emission Properties; MWCNT/ZnO nanoparticles hybrid; Physics
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APA ·
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APA (6th Edition):
Ivaturi, S. (2018). Electron Filed Emission Studies of Nanostructured Carbon Materials. (Doctoral Dissertation). Indian Institute of Science. Retrieved from http://etd.iisc.ac.in/handle/2005/3251
Chicago Manual of Style (16th Edition):
Ivaturi, Sameera. “Electron Filed Emission Studies of Nanostructured Carbon Materials.” 2018. Doctoral Dissertation, Indian Institute of Science. Accessed January 23, 2021.
http://etd.iisc.ac.in/handle/2005/3251.
MLA Handbook (7th Edition):
Ivaturi, Sameera. “Electron Filed Emission Studies of Nanostructured Carbon Materials.” 2018. Web. 23 Jan 2021.
Vancouver:
Ivaturi S. Electron Filed Emission Studies of Nanostructured Carbon Materials. [Internet] [Doctoral dissertation]. Indian Institute of Science; 2018. [cited 2021 Jan 23].
Available from: http://etd.iisc.ac.in/handle/2005/3251.
Council of Science Editors:
Ivaturi S. Electron Filed Emission Studies of Nanostructured Carbon Materials. [Doctoral Dissertation]. Indian Institute of Science; 2018. Available from: http://etd.iisc.ac.in/handle/2005/3251
Indian Institute of Science
7.
Vasu, Kalangi Siddeswara.
Nanodevices of Graphene, Carbon Nanotubes and Flow Behaviour of Graphene Oxide Gel.
Degree: PhD, Faculty of Science, 2018, Indian Institute of Science
URL: http://etd.iisc.ac.in/handle/2005/3511
► In the last three decades carbon nanomaterials such as fullerenes, carbon nanotubes and graphene have attracted significant attention from the scientific community due to their…
(more)
▼ In the last three decades
carbon nanomaterials such as fullerenes,
carbon nanotubes and
graphene have attracted significant attention from the scientific community due to their unique electronic, optical, thermal, mechanical and chemical properties. Among them
carbon nanotubes and
graphene have been used in numerous applications for future nanoelectronics, biochemical sensors and energy harvesting technologies due to their unique properties including exceptionally high electronic conductivity and mechanical strength.
Carbon nanotubes are cylindrical structures and considered to be large mesoscopic molecules with high aspect ratios.
Graphene is a single atomic layer of crystalline graphite and prepared by stripping layers off the graphite using Scotch tape. Apart from this scotch tape method, chemical ex-foliation and reduction of graphite
oxide produces large amounts of reduced
graphene oxide which has similar properties as
graphene.
This thesis reports on the biosensors made of reduced
graphene oxide and single walled
carbon nanotubes based on their electronic properties. We also demonstrate the changes in electronic properties of single walled
carbon nanotubes due to interactions with dendrimer molecules. Finally, the yielding and flow behaviour of
graphene oxide nematic gel are discussed.
Chapter 1 gives a general introduction about the preparation and characterization along with the electronic properties of the systems studied in this thesis, namely
graphene oxide, reduced
graphene oxide and single walled
carbon nanotubes. We have also discussed about the experimental techniques such as Raman, UV-visibe and infrared spectroscopy, atomic force and scanning tunneling microscopy and different types of rheometers used in this thesis work.
In Chapter 2, we discuss top-gated field effect transistor characteristics of the devices made of reduced
graphene oxide monolayer by dielectrophoresis. Raman spectrum of RGO flakes shows a single 2D band at 2687 cm 1, characteristic of a single layer
graphene. The two probe current - voltage measurements of RGO flakes, deposited in between the patterned electrodes using a.c. dielectrophoresis show ohmic behavior with a resistance of 37kΩ. The temperature dependence of the resistance (R) of RGO measured between temperatures 305K to 393K yields the temperature coefficient of resistance of -9.5 10 4/K. Ambipolar nature of
graphene flakes is observed upto a doping level of 6 1012/cm2 and carrier mobility of 50cm2/V-sec. The source - drain current characteristics shows a tendency of current saturation at high source - drain voltage which is analyzed quantitatively by a diffusive transport model.
In Chapter 3, We demonstrate the detection of glucose molecules by using reduced
graphene oxide (RGO) and aminophenylboronic acid (APBA) complex with detection limit of 5 nM. APBA functionalized RGO (APBA-RGO) flakes, prepared by stirring the aqueous GO suspension in the presence of APBA molecules at 100◦C, were used as conducting channel in our field effect transistor (FET) devices. The…
Advisors/Committee Members: Sood, Ajay K (advisor).
Subjects/Keywords: Carbon Nanotubes; Graphene Oxide; Biosensors; Graphene Nanodevices; Graphene Oxide Gel; Glucose Sensing; Reduced Graphene Oxide; Field Effect Transistors; Graphene; Single Walled Carbon Nanotubes; Physics
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APA ·
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APA (6th Edition):
Vasu, K. S. (2018). Nanodevices of Graphene, Carbon Nanotubes and Flow Behaviour of Graphene Oxide Gel. (Doctoral Dissertation). Indian Institute of Science. Retrieved from http://etd.iisc.ac.in/handle/2005/3511
Chicago Manual of Style (16th Edition):
Vasu, Kalangi Siddeswara. “Nanodevices of Graphene, Carbon Nanotubes and Flow Behaviour of Graphene Oxide Gel.” 2018. Doctoral Dissertation, Indian Institute of Science. Accessed January 23, 2021.
http://etd.iisc.ac.in/handle/2005/3511.
MLA Handbook (7th Edition):
Vasu, Kalangi Siddeswara. “Nanodevices of Graphene, Carbon Nanotubes and Flow Behaviour of Graphene Oxide Gel.” 2018. Web. 23 Jan 2021.
Vancouver:
Vasu KS. Nanodevices of Graphene, Carbon Nanotubes and Flow Behaviour of Graphene Oxide Gel. [Internet] [Doctoral dissertation]. Indian Institute of Science; 2018. [cited 2021 Jan 23].
Available from: http://etd.iisc.ac.in/handle/2005/3511.
Council of Science Editors:
Vasu KS. Nanodevices of Graphene, Carbon Nanotubes and Flow Behaviour of Graphene Oxide Gel. [Doctoral Dissertation]. Indian Institute of Science; 2018. Available from: http://etd.iisc.ac.in/handle/2005/3511
University of Utah
8.
Kennedy, W. Joshua.
Optical and vibrational properties of single-wall carbon nanotubes.
Degree: PhD, Physics, 2011, University of Utah
URL: http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/476/rec/1752
► This work is a study of the optical properties of single-wall carbon nanotubes (SWNTs) using continuous wave (CW) modulation spectroscopy and resonant Raman scattering. SWNTs…
(more)
▼ This work is a study of the optical properties of single-wall carbon nanotubes (SWNTs) using continuous wave (CW) modulation spectroscopy and resonant Raman scattering. SWNTs comprise a nanoscale, quasi-1D system in which the electrons are strongly interacting, resulting in the photo-generation of excitons. Our optical studies have revealed the behavior of these excitons under a number of di fferent perturbations to the system. We have used absorption, reflectance, electro-absorption (EA), photo-induced absorption (PA), charge-induced absorption (CIA), and resonant Raman scattering (RRS) on films of SWNTs. Our EA results provide strong evidence for the dominance of excitons in the optical absorption spectra of SWNT films. The absence of Franz-Keldysh oscillations and the presence of a derivative-like structure of the EA spectra indicate that the oscillator strength goes to the generation of excitons and not to interband electronic transitions. Furthermore, some of the photo-generated excitons are long-lived due to charge trapping in individual tubes within bundles, and this leads to a PA spectrum that is extraordinarily similar to the EA signal. When SWNTs are electrochemically doped we see that the exciton absorption is bleached due to k-space fi lling and screening of the excitons by the modi ed local dielectric, while there is very little shift in the exciton transition energies due to band-gap renormalization. Simultaneously the infrared absorption, which is due to Drude free-carriers absorption, is enhanced. A similar behavior is observed in the case of direct charge injection. The RRS of doped SWNT samples shows a frequency shift of many of the Raman-active modes that is commensurate with the macroscopic actuation observed in nanotube-based electrochemical devices. This indicates that doping-induced changes in the lattice are connected with softening and sti ening of the vibrational modes. Our results impact many proposed technologies that exploit the unique prop-erties of SWNTs. Displays, batteries, and even photovoltaics that incorporate nanotubes are already in development. The performance and robustness of these devices could be improved when our results are taken into account.
Subjects/Keywords: Carbon; Electroabsorption; Nanotubes; Raman; Single-wall carbon nanotubes; SWNT
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APA (6th Edition):
Kennedy, W. J. (2011). Optical and vibrational properties of single-wall carbon nanotubes. (Doctoral Dissertation). University of Utah. Retrieved from http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/476/rec/1752
Chicago Manual of Style (16th Edition):
Kennedy, W Joshua. “Optical and vibrational properties of single-wall carbon nanotubes.” 2011. Doctoral Dissertation, University of Utah. Accessed January 23, 2021.
http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/476/rec/1752.
MLA Handbook (7th Edition):
Kennedy, W Joshua. “Optical and vibrational properties of single-wall carbon nanotubes.” 2011. Web. 23 Jan 2021.
Vancouver:
Kennedy WJ. Optical and vibrational properties of single-wall carbon nanotubes. [Internet] [Doctoral dissertation]. University of Utah; 2011. [cited 2021 Jan 23].
Available from: http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/476/rec/1752.
Council of Science Editors:
Kennedy WJ. Optical and vibrational properties of single-wall carbon nanotubes. [Doctoral Dissertation]. University of Utah; 2011. Available from: http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/476/rec/1752
University of Florida
9.
Wang, Po-Hsiang.
Demonstration of Inorganic Carbon Nanotube Enabled Vertical Field Effect Transistors.
Degree: PhD, Physics, 2013, University of Florida
URL: https://ufdc.ufl.edu/UFE0045311
► Carbon nanotube enabled vertical field transistor (CN-VFET) was developed as a new class of transistors with novel architecture that enables high density circuitry as well…
(more)
▼ Carbon nanotube enabled vertical field transistor (CN-VFET) was developed as a new class of transistors with novel architecture that enables high density circuitry as well as delivers industrially relevant performance. This new design took advantage of using
carbon nanotube thin films as transparent electrodes, enabling low-cost processing and high transparency. These CN-VFETs and their relatives show great promise for the next generation of electronics. N-channel CN-VFETs based on a solution deposited
ZnO nanoparticle thin film as the channel material were demonstrated. The devices exhibit on/off ratios approaching 10
4 with output current densities exceeding 60 mA/cm
2. the modulation of the Schottky barrier formed at
carbon nanotube/silicon heteronjunctions was explored using ionic liquid as gate dielectric. The influence of interface states at the interface were also studied via silicon surface oxidation as the means of surface passivation. The general results with proper surface passivation showed a modulation of 10
3 – 10
4 at gate voltages of ± 0.4V in either forward or reverse bias. Temperature dependence of the characteristics of a
carbon nanotube enabled vertical field transistor (CN-VFET) had been investigated in detail. Channel layers with moderate and high mobility organic semiconductors have been fabricated and characterized at different temperatures. Results of high mobility semiconductors show that CN-VFETs operate with different principles from conventional field effect transistors (FETs) that the device operation is most likely dominated by carrier injection at the interface of the source and channel rather than the modulation of carrier transport inside the channel layer. We also demonstrated silicon based CN-VFETs. Unlike previous CN-VFETs, a single crystal silicon wafer is used as the channel layer and devices with a top gate dielectric were fabricated. The device exhibit a current on/off ratio of nearly 10
5 with an on current density exceeding 5 A/cm
2 over a drain voltage of 2 V. ( en )
Advisors/Committee Members: Rinzler, Andrew Gabriel (committee chair), Hershfield, Selman Philip (committee member), Hebard, Arthur F (committee member), Tanner, David B (committee member), So, Franky Fat Kei (committee member).
Subjects/Keywords: Carbon nanotubes; Current density; Electric current; Electric potential; Electrodes; Graphene; Nanotubes; Silicon; Thin films; Transistors; nanotube – vfet – zno
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APA (6th Edition):
Wang, P. (2013). Demonstration of Inorganic Carbon Nanotube Enabled Vertical Field Effect Transistors. (Doctoral Dissertation). University of Florida. Retrieved from https://ufdc.ufl.edu/UFE0045311
Chicago Manual of Style (16th Edition):
Wang, Po-Hsiang. “Demonstration of Inorganic Carbon Nanotube Enabled Vertical Field Effect Transistors.” 2013. Doctoral Dissertation, University of Florida. Accessed January 23, 2021.
https://ufdc.ufl.edu/UFE0045311.
MLA Handbook (7th Edition):
Wang, Po-Hsiang. “Demonstration of Inorganic Carbon Nanotube Enabled Vertical Field Effect Transistors.” 2013. Web. 23 Jan 2021.
Vancouver:
Wang P. Demonstration of Inorganic Carbon Nanotube Enabled Vertical Field Effect Transistors. [Internet] [Doctoral dissertation]. University of Florida; 2013. [cited 2021 Jan 23].
Available from: https://ufdc.ufl.edu/UFE0045311.
Council of Science Editors:
Wang P. Demonstration of Inorganic Carbon Nanotube Enabled Vertical Field Effect Transistors. [Doctoral Dissertation]. University of Florida; 2013. Available from: https://ufdc.ufl.edu/UFE0045311
Indian Institute of Science
10.
Pramanik, Debabrata.
Polymer Assisted Dispersion of Carbon Nanotubes (CNTs) and Structure, Electronic Properties of CNT - Polymer Composite.
Degree: PhD, Faculty of Science, 2018, Indian Institute of Science
URL: http://etd.iisc.ac.in/handle/2005/3563
► Carbon nanotubes possess various unique and interesting properties. They have very high thermal and electrical conductivities, high stiffness, mechanical strength, and optical properties. Due to…
(more)
▼ Carbon nanotubes possess various unique and interesting properties. They have very high thermal and electrical conductivities, high stiffness, mechanical strength, and optical properties. Due to these properties, CNTs are widely used materials in a variety of fields. It is used for biotechnological and biomedical applications, as chemical and biosensor, in energy storage and field emission transistor. Experimentally synthesized CNTs are generally found in bundle form due to the strong vander Waals (vdW) at-traction between the individual tubes. To use CNTs in real life applications, we often require specific
nanotubes with particular characteristics. The nanotube bundle is a mixture of various chirality, diameters and electronic properties (metallic and semiconducting). Only thermal energy is not sufficient to disperse
nanotubes from the bundle geometry overcoming the strong vdW attraction between
nanotubes. The hydrophobic and insoluble nature of CNTs in the aqueous medium makes the dispersion of CNTs even more difficult. So, it is a big challenge to get single pristine nanotube from the bundle geometry.
Many experimental and theoretical studies have addressed the problem of nanotube dispersion from the bundle geometry. Ultrasonic dispersing method is a widely used technique for this purpose where ultrasonic sound is applied to agitate particles in a system. Other methods include using different organic and inorganic solutions, various surfactant molecules, different polymers as dispersing agents. In this study we extend our e orts to develop some better methods and improved dispersing agents. In this thesis, we address the problem of CNT dispersion. To address this issue, we rst give a quantitative estimation of the effective interaction between
nanotubes. Next, we introduce different polymers (ssDNA and dendrimers) as external agents and show that they help to overcome the strong adhesive interaction between CNTs and make nanotube dispersion possible from the bundle geometry. For all of the works presented in this thesis, we have used fully atomistic MD simulation and DFT level calculations. We study ssDNA-CNT complex using all-atom MD simulation and calculate various structural quantities to show the stability of ssDNA-CNT complex in aqueous medium. The adsorption of ssDNA bases on CNT surface is driven by - interaction between nucleic bases and CNT. Using the potential of mean forces (PMF) calculation, we study the binding strength of the polynucleotide ssDNA for poly A, T, G, and C with CNT of chirality (6,5). From the PMF calculation, we show the binding sequence to be A > T > C > G. Except for poly G, our result is in good agreement with earlier reported single molecule force spectroscopy results where the sequence of binding interaction was reported to be A > G > T > C. To explore how the interaction between two CNTs mod-i ed in presence of ssDNA between them, we perform PMF calculation between the two ssDNA-wrapped CNTs. The PMF shows the sequence of interaction strength between two ssDNA-wrapped CNTs for…
Advisors/Committee Members: Maiti, Prabal K (advisor).
Subjects/Keywords: Carbon Nanotube (CNT); DNA - Structure; DNA-SWNT Complex; Dendrimer; Born-Oppenheimer Approximation; Carbon Nanotube-dendrimer Composite; Carbon Nanotubes (CNTs); Mannose Dendrimer Wrapping; Physics
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APA (6th Edition):
Pramanik, D. (2018). Polymer Assisted Dispersion of Carbon Nanotubes (CNTs) and Structure, Electronic Properties of CNT - Polymer Composite. (Doctoral Dissertation). Indian Institute of Science. Retrieved from http://etd.iisc.ac.in/handle/2005/3563
Chicago Manual of Style (16th Edition):
Pramanik, Debabrata. “Polymer Assisted Dispersion of Carbon Nanotubes (CNTs) and Structure, Electronic Properties of CNT - Polymer Composite.” 2018. Doctoral Dissertation, Indian Institute of Science. Accessed January 23, 2021.
http://etd.iisc.ac.in/handle/2005/3563.
MLA Handbook (7th Edition):
Pramanik, Debabrata. “Polymer Assisted Dispersion of Carbon Nanotubes (CNTs) and Structure, Electronic Properties of CNT - Polymer Composite.” 2018. Web. 23 Jan 2021.
Vancouver:
Pramanik D. Polymer Assisted Dispersion of Carbon Nanotubes (CNTs) and Structure, Electronic Properties of CNT - Polymer Composite. [Internet] [Doctoral dissertation]. Indian Institute of Science; 2018. [cited 2021 Jan 23].
Available from: http://etd.iisc.ac.in/handle/2005/3563.
Council of Science Editors:
Pramanik D. Polymer Assisted Dispersion of Carbon Nanotubes (CNTs) and Structure, Electronic Properties of CNT - Polymer Composite. [Doctoral Dissertation]. Indian Institute of Science; 2018. Available from: http://etd.iisc.ac.in/handle/2005/3563
Indian Institute of Science
11.
Das, Barun.
Investigations Of Graphene, Noble Metal Nanoparticles And Related Nanomaterials.
Degree: PhD, Faculty of Science, 2015, Indian Institute of Science
URL: http://etd.iisc.ac.in/handle/2005/2432
► The thesis consists of four parts of which part 1 presents a brief overview of nanomaterials. Parts 2, 3 and 4 contain results of investigations…
(more)
▼ The thesis consists of four parts of which part 1 presents a brief overview of
nanomaterials. Parts 2, 3 and 4 contain results of investigations of
graphene, nanofilms
of noble metal nanoparticles and
ZnO nanostructures respectively.
Investigations of
graphene are described in Part 2 which consists of six chapters.
In Chapter 2.1, changes in the electronic structure and properties of
graphene induced
by molecular charge-transfer have been discussed. Chapter 2.2 deals with the results of a study of the interaction of metal and metal
oxide nanoparticles with
graphene.
Electrical and dielectric properties of
graphene-polymer composites are presented in
Chapter 2.3. Chapter 2.4 presents photo-thermal effects observed in laser-induced
chemical transformations in
graphene and other nanocarbons system. Chapter 2.5
describes the mechanical properties of polymer matrix composites reinforced by fewlayer
graphene investigated by nano-indentation. The extraordinary synergy found in the mechanical properties of polymer matrix composites reinforced with two
nanocarbons of different dimensionalities constitute the
subject matter of Chapter 2.6.
Investigations of noble metal nanoparticles have been described in Part 3. In
Chapter 3.1, ferromagnetism exhibited by nanoparticles of noble metals is discussed in
detail while Chapter 3.2 deals with surface-enhanced Raman scattering (SERS) of
molecules adsorbed on nanocrystalline Au and Ag films formed at the organic–aqueous
interface.
Factors affecting laser-excited photoluminescence from
ZnO nanostructures are
examined in great detail in Part 4.
Advisors/Committee Members: Rao, C N R (advisor).
Subjects/Keywords: Nanomaterials; Graphene; Noble Metal Nanoparticles; Carbon Nanostructures; Inorganic Nanostructures; ZnO Nanostructures; Carbon Nanotubes; Semiconductor Nanoparticles; Graphene-polymer Composites; Polymer Matrix Composites; Nanocarbons; ZnO Nanostructures; Nanotechnology
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APA (6th Edition):
Das, B. (2015). Investigations Of Graphene, Noble Metal Nanoparticles And Related Nanomaterials. (Doctoral Dissertation). Indian Institute of Science. Retrieved from http://etd.iisc.ac.in/handle/2005/2432
Chicago Manual of Style (16th Edition):
Das, Barun. “Investigations Of Graphene, Noble Metal Nanoparticles And Related Nanomaterials.” 2015. Doctoral Dissertation, Indian Institute of Science. Accessed January 23, 2021.
http://etd.iisc.ac.in/handle/2005/2432.
MLA Handbook (7th Edition):
Das, Barun. “Investigations Of Graphene, Noble Metal Nanoparticles And Related Nanomaterials.” 2015. Web. 23 Jan 2021.
Vancouver:
Das B. Investigations Of Graphene, Noble Metal Nanoparticles And Related Nanomaterials. [Internet] [Doctoral dissertation]. Indian Institute of Science; 2015. [cited 2021 Jan 23].
Available from: http://etd.iisc.ac.in/handle/2005/2432.
Council of Science Editors:
Das B. Investigations Of Graphene, Noble Metal Nanoparticles And Related Nanomaterials. [Doctoral Dissertation]. Indian Institute of Science; 2015. Available from: http://etd.iisc.ac.in/handle/2005/2432
Univerzitet u Beogradu
12.
Трпков, Ђорђе Б., 1981- 30684007.
Хидротермална синтеза наночестичног хематита, структурна,
морфолошка и магнетна својства.
Degree: Fakultet za fizičku hemiju, 2019, Univerzitet u Beogradu
URL: https://fedorabg.bg.ac.rs/fedora/get/o:20527/bdef:Content/get
► Физичка хемија - Физичка хемија материјала / Physical chemistry - Physical chemistry of materials
У овој докторској дисертацији описана је хидротермална синтеза наночестичног хематита (α-Fe2O3),…
(more)
▼ Физичка хемија - Физичка хемија материјала /
Physical chemistry - Physical chemistry of
materials
У овој докторској дисертацији описана је
хидротермална синтеза наночестичног хематита (α-Fe2O3), као и
карактеризација материјала, у сврху његове потенцијалне примене у
различитим областима. Синтетисани узорци су карактерисани
ренгеноструктурном анализом (XRDP), електронском микроскопијом (SEM
и TEM), магнетометријом са вибрирајућим узорком (VSM) и вибрационом
спектроскопијом (FTIR и Raman). Извршена је и математичка анализа
морфологија честица, применом дескриптора облика на одабране ТЕМ
слике узорака...
Advisors/Committee Members: Tadić, Marin, 1972- 9906535.
Subjects/Keywords: hydrothermal synthesis; iron oxide; hematite (α-Fe2O3);
magnetic properties; self-assembl; TEM image analysis
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APA (6th Edition):
Трпков, Ђорђе Б., 1. 3. (2019). Хидротермална синтеза наночестичног хематита, структурна,
морфолошка и магнетна својства. (Thesis). Univerzitet u Beogradu. Retrieved from https://fedorabg.bg.ac.rs/fedora/get/o:20527/bdef:Content/get
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Трпков, Ђорђе Б., 1981- 30684007. “Хидротермална синтеза наночестичног хематита, структурна,
морфолошка и магнетна својства.” 2019. Thesis, Univerzitet u Beogradu. Accessed January 23, 2021.
https://fedorabg.bg.ac.rs/fedora/get/o:20527/bdef:Content/get.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Трпков, Ђорђе Б., 1981- 30684007. “Хидротермална синтеза наночестичног хематита, структурна,
морфолошка и магнетна својства.” 2019. Web. 23 Jan 2021.
Vancouver:
Трпков, Ђорђе Б. 13. Хидротермална синтеза наночестичног хематита, структурна,
морфолошка и магнетна својства. [Internet] [Thesis]. Univerzitet u Beogradu; 2019. [cited 2021 Jan 23].
Available from: https://fedorabg.bg.ac.rs/fedora/get/o:20527/bdef:Content/get.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Трпков, Ђорђе Б. 13. Хидротермална синтеза наночестичног хематита, структурна,
морфолошка и магнетна својства. [Thesis]. Univerzitet u Beogradu; 2019. Available from: https://fedorabg.bg.ac.rs/fedora/get/o:20527/bdef:Content/get
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Waterloo
13.
Huang, Po-Jung Jimmy.
DNA Adsorption, Desorption, and Fluorescence Quenching by Graphene Oxide and Related Analytical Application.
Degree: 2011, University of Waterloo
URL: http://hdl.handle.net/10012/6258
► Graphene is a single layer of graphite with many unique mechanical, electrical, and optical properties. In addition, graphene is also known to adsorb wide range…
(more)
▼ Graphene is a single layer of graphite with many unique mechanical, electrical, and optical properties. In addition, graphene is also known to adsorb wide range of biomolecules including single-stranded DNA. On the other hand, the adsorption of double-stranded DNA was much weaker. To properly disperse in water, graphene oxide (GO) is often used due to its oxygen-containing groups on the surface. Recently, it was discovered that it could efficiently quench the fluorescence of fluorophores that were adsorbed. With these properties, it is possible to prepare DNA-based optical sensors using GO. Majority of the DNA/GO-based fluorescent sensors reported so far were relied on the complete desorption of DNA probes. Even though all these reports demonstrated the sensitivity and selectivity of the system, the fundamentals of binding between DNA and GO were hardly addressed.
Understanding and controlling binding between biomolecules and inorganic materials is very important in biosensor development. In this thesis, adsorption and desorption of DNA on the GO surface under different buffer conditions including ionic strength, pH, and temperature were systematically evaluated. For instance, adsorption is favored in a lower pH and a higher ionic strength buffer. It was found that once a DNA was adsorbed on the surface, little desorption occurred even in low salt buffers. Even with high pH or temperature, only small percentage of adsorbed DNA can be desorbed. To completely desorb the DNA, complementary DNA is required. The energies and activation energies associated with DNA adsorption/desorption were measured and molecular pictures of these processes were obtained. With the fundamental understanding of the DNA/GO interaction, we demonstrated that it is possible to achieve sensor regeneration without covalent immobilization. In addition, we also achieved the separation of double-stranded DNAs from single-stranded ones without using gel electrophoresis.
We also studied the fluorescence property of DNA near the GO surface using covalently attached DNA probes. It was found that the fluorophore quantum yield and lifetime changed as a function of DNA length. This study is important for rational design of covalently linked DNA sensors. This study confirmed that fluorescence quenching by GO occurs in a distance-dependent manner. Energy transfer occurred between the fluorophore and GO to result in reduced quantum yield, shorter lifetime, and lower fluorescence intensity. Although fluorescent sensors based on covalently attached DNA probes on GO have not yet been reported, the study presented here clearly supported its feasibility.
Subjects/Keywords: Graphene Oxide; DNA
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APA (6th Edition):
Huang, P. J. (2011). DNA Adsorption, Desorption, and Fluorescence Quenching by Graphene Oxide and Related Analytical Application. (Thesis). University of Waterloo. Retrieved from http://hdl.handle.net/10012/6258
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Huang, Po-Jung Jimmy. “DNA Adsorption, Desorption, and Fluorescence Quenching by Graphene Oxide and Related Analytical Application.” 2011. Thesis, University of Waterloo. Accessed January 23, 2021.
http://hdl.handle.net/10012/6258.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Huang, Po-Jung Jimmy. “DNA Adsorption, Desorption, and Fluorescence Quenching by Graphene Oxide and Related Analytical Application.” 2011. Web. 23 Jan 2021.
Vancouver:
Huang PJ. DNA Adsorption, Desorption, and Fluorescence Quenching by Graphene Oxide and Related Analytical Application. [Internet] [Thesis]. University of Waterloo; 2011. [cited 2021 Jan 23].
Available from: http://hdl.handle.net/10012/6258.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Huang PJ. DNA Adsorption, Desorption, and Fluorescence Quenching by Graphene Oxide and Related Analytical Application. [Thesis]. University of Waterloo; 2011. Available from: http://hdl.handle.net/10012/6258
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Dundee
14.
Goher, Qammar Sultan.
A study of carbon based materials for energy applications.
Degree: PhD, 2012, University of Dundee
URL: https://discovery.dundee.ac.uk/en/studentTheses/258fe8ab-2e3c-4204-96db-1fc17fce0278
;
https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.578842
► Carbon based materials such as CNTs and graphene have been widely studied over the last few years. The outstanding electrical and mechanical properties of these…
(more)
▼ Carbon based materials such as CNTs and graphene have been widely studied over the last few years. The outstanding electrical and mechanical properties of these materials attracted researchers to find ways to grow and use them in nano-devices. Among the different techniques, PECVD is a relatively simple and low temperature process. It facilitates the growth of CNTs and graphene on particular sites of the substrate. The objective of this research project was to study the growth of CNTs and graphene using PECVD system and to employ them in renewable energy devices. Excimer laser processed materials were also the focus for flexible material for fuel cells and other applications to show the way to a one step manufacturing process that lends itself to large area and low cost processing using standard tools.In the growth of CNTs, the roll of a buffer layer and catalyst materials were studied in depth. Different metals were tested for best results in optimising nanotube growth for the selected applications. The role of the buffer layer in the formation of nanoparticles and their surface adhesion was studied. Different materials were used as a catalyst and analysed for best performance in the PECVD system. Growth parameters such as temperature, pressure, gas flow rate and plasma power were studied during the growth of CNTs in the PECVD system. The growth of graphene has been conducted in two ways: firstly, by the traditional mechanical exfoliation technique (with the help of Manchester University) and second by PECVD techniques.Polymer materials are promising flexible substrates for electronic and energy devices. An excimer laser was used to transform thin metallic films into nanoparticles which could play the role of the catalyst in proton exchange membrane fuel cells. In this study experiments have been conducted into a single step process to convert the poly ethylene naphthalate (PEN) surface to a robust mesoporous carbon material that conducts electrons, whilst depositing the catalyst. Such a technique has been developed for the first time in this work. Laser modification here produced a conical carbon structure and dense arrays of well defined catalysts.A prototype fuel cell was designed and crafted to employ the laser processed PEN as a proton exchange membrane. Some experiments were conducted regarding the transport of protons through laser processed PEN and the conventionally used fuel cell electrolyte, Nafion. It has been observed that the hydrophilic property of Nafion allowed proton transport across this material. It was also observed that PEN is not a good membrane for protonic transport. This material does not have free sites for vehicle transport. The catalytic activity of laser ablated Ni nanoparticles on PEN substrate was studied in temperature programme reaction (TPR) and it was observed that the metallic nanoparticles had some activity at higher temperature. Both Ni and Pt nanoparticles were tested as catalysts on the standard Nafion electrolyte. It was observed that Pt is active for the hydrogen combustion…
Subjects/Keywords: 620.112; Carbon nanotubes and graphene
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APA (6th Edition):
Goher, Q. S. (2012). A study of carbon based materials for energy applications. (Doctoral Dissertation). University of Dundee. Retrieved from https://discovery.dundee.ac.uk/en/studentTheses/258fe8ab-2e3c-4204-96db-1fc17fce0278 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.578842
Chicago Manual of Style (16th Edition):
Goher, Qammar Sultan. “A study of carbon based materials for energy applications.” 2012. Doctoral Dissertation, University of Dundee. Accessed January 23, 2021.
https://discovery.dundee.ac.uk/en/studentTheses/258fe8ab-2e3c-4204-96db-1fc17fce0278 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.578842.
MLA Handbook (7th Edition):
Goher, Qammar Sultan. “A study of carbon based materials for energy applications.” 2012. Web. 23 Jan 2021.
Vancouver:
Goher QS. A study of carbon based materials for energy applications. [Internet] [Doctoral dissertation]. University of Dundee; 2012. [cited 2021 Jan 23].
Available from: https://discovery.dundee.ac.uk/en/studentTheses/258fe8ab-2e3c-4204-96db-1fc17fce0278 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.578842.
Council of Science Editors:
Goher QS. A study of carbon based materials for energy applications. [Doctoral Dissertation]. University of Dundee; 2012. Available from: https://discovery.dundee.ac.uk/en/studentTheses/258fe8ab-2e3c-4204-96db-1fc17fce0278 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.578842
Hong Kong University of Science and Technology
15.
Chen, Qihong.
Fabrication and characterization of nanostructured carbons.
Degree: 2012, Hong Kong University of Science and Technology
URL: http://repository.ust.hk/ir/Record/1783.1-7927
;
https://doi.org/10.14711/thesis-b1189918
;
http://repository.ust.hk/ir/bitstream/1783.1-7927/1/th_redirect.html
► This thesis is about the preparation and characterization of two carbon nanostructures: graphene magnetoresistance device (EMR) and 0.4 nm carbon nanotubes grown in the linear…
(more)
▼ This thesis is about the preparation and characterization of two
carbon nanostructures:
graphene magnetoresistance device (EMR) and 0.4 nm
carbon nanotubes grown in the linear channels of AFI zeolite crystal. The second part is my focus. On the first part,
graphene EMR devices have shown excellent magnetoresistance effect for potential applications. The MR effect arises from the geometric arrangements of the metallic parts on
graphene, together with the placing of the electrodes. It follows that geometric parameters must play an important role in determining the performance of the EMR device. In order to achieve larger MR and to investigate the effect of the size of EMR deveic, I have fabricated several devices with sizes ranging from 1~3 μm and with different metals. Simulations have also been carried out to compare with the measured data. Comparison showed excellent agreement between the experiments and simulations. By using the ideal mobility of
graphene, simulation has predicted an MR magnitude as high as 100,000%. After fine tuning, our
graphene EMR device has exhibited a MR effect up to 85,000%, close to the prediction. The 4 Angstrom
[email protected] have exhibited superconductivity. To prepare better samples for transport measurements, I have devoted much effort to improve the sample quality. Different parameters were tested, and it is found that: (1) Neither low temperature nor very high temperature is good for the growth of CNTs; while in the range of 600~650℃, temperature does not have a significant effect on the sample quality. (2) The heating time is not too critical. Four to eight hours should be a good choice. (3) The pressure has an obvious effect on the quality as well as the quantity of
carbon in the AFI pores. At low pressure, the RBM signal is clearly seen in the Raman spectra, but the TG analysis shows the
carbon content to be on the low side; while at high pressure up to 3 atm, the RBM signal is hard to be seen because of the high intensity of the background PL. The absolute value of G band is stronger under high pressure, indicating that there is more
carbon in the AFI channels. The TG analysis has verified our expectation that the higher pressure condition should yield a higher
carbon content. More
carbon content, but smaller RBM/G ratio, is likely to be indicative of two types of
carbon co-existing in the pores of AFI crystals: the 0.4nm CNTs and the byproducts from the decomposition of ethylene. Since the environmental pressure is high, it would be difficult for the byproducts to be dispersed from the channels. I have also tested the use of catalyst for the growth of 4-Angstrom CNTs. Cobalt carbonyl was introduced as a vapor cobalt source for catalyzing the growth of CNTs. From the Raman data, some positive results have been observed, but it is not as effective as we have expected, mainly due to the fact that no Co, or very little Co, is in the channels to catalyze the CNT growth. As catalyst may be the most promising way to improve the quatliy as well as the quantity of 4-Angstrom CNTs, further…
Subjects/Keywords: Nanotubes
; Carbon
; Graphene
; Magnetoresistance
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MLA ·
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APA (6th Edition):
Chen, Q. (2012). Fabrication and characterization of nanostructured carbons. (Thesis). Hong Kong University of Science and Technology. Retrieved from http://repository.ust.hk/ir/Record/1783.1-7927 ; https://doi.org/10.14711/thesis-b1189918 ; http://repository.ust.hk/ir/bitstream/1783.1-7927/1/th_redirect.html
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Chen, Qihong. “Fabrication and characterization of nanostructured carbons.” 2012. Thesis, Hong Kong University of Science and Technology. Accessed January 23, 2021.
http://repository.ust.hk/ir/Record/1783.1-7927 ; https://doi.org/10.14711/thesis-b1189918 ; http://repository.ust.hk/ir/bitstream/1783.1-7927/1/th_redirect.html.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Chen, Qihong. “Fabrication and characterization of nanostructured carbons.” 2012. Web. 23 Jan 2021.
Vancouver:
Chen Q. Fabrication and characterization of nanostructured carbons. [Internet] [Thesis]. Hong Kong University of Science and Technology; 2012. [cited 2021 Jan 23].
Available from: http://repository.ust.hk/ir/Record/1783.1-7927 ; https://doi.org/10.14711/thesis-b1189918 ; http://repository.ust.hk/ir/bitstream/1783.1-7927/1/th_redirect.html.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Chen Q. Fabrication and characterization of nanostructured carbons. [Thesis]. Hong Kong University of Science and Technology; 2012. Available from: http://repository.ust.hk/ir/Record/1783.1-7927 ; https://doi.org/10.14711/thesis-b1189918 ; http://repository.ust.hk/ir/bitstream/1783.1-7927/1/th_redirect.html
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Florida Atlantic University
16.
Rowbottom, Colin.
Investigation of Structure-Property Relationship of a High Temperature Polyimide Reinforced with Nanoparticles.
Degree: MS, 2018, Florida Atlantic University
URL: http://fau.digital.flvc.org/islandora/object/fau:40848
► Nano-reinforced polymeric systems have demonstrated a great deal of interest within academia and industry, due to the intrinsic properties of the graphene nanofillers, having excellent…
(more)
▼ Nano-reinforced polymeric systems have demonstrated a great deal of interest
within academia and industry, due to the intrinsic properties of the graphene nanofillers,
having excellent mechanical, thermal and electrical properties. The reinforcement of multiwall
carbon nanotubes (MWCNTs) and graphene nanoplatelets (GNPs) were introduced
into a low cost, non-carcinogenic, high temperature PMR type polyimide resin. The effects
of the interfacial interaction and dispersion quality resulted in improvement in the glass
transition temperature (Tg), elastic modulus and thermal stability by, 31°C, 63% and 16°C,
respectively. In fine, this study presents a simple but effective high temperature polyimide
(HTPI) nanocomposites manufacturing procedure and established that nanoparticle
reinforcement can be used to improve both thermal and mechanical properties.
2018
Degree granted: Thesis (M.S.) – Florida Atlantic University, 2018.
Collection: FAU
Advisors/Committee Members: Mahfuz, Hassan (Thesis advisor), Florida Atlantic University (Degree grantor), College of Engineering and Computer Science, Department of Ocean and Mechanical Engineering.
Subjects/Keywords: Polyimides; Nanoparticles; Carbon nanotubes; Graphene
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APA ·
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MLA ·
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APA (6th Edition):
Rowbottom, C. (2018). Investigation of Structure-Property Relationship of a High Temperature Polyimide Reinforced with Nanoparticles. (Masters Thesis). Florida Atlantic University. Retrieved from http://fau.digital.flvc.org/islandora/object/fau:40848
Chicago Manual of Style (16th Edition):
Rowbottom, Colin. “Investigation of Structure-Property Relationship of a High Temperature Polyimide Reinforced with Nanoparticles.” 2018. Masters Thesis, Florida Atlantic University. Accessed January 23, 2021.
http://fau.digital.flvc.org/islandora/object/fau:40848.
MLA Handbook (7th Edition):
Rowbottom, Colin. “Investigation of Structure-Property Relationship of a High Temperature Polyimide Reinforced with Nanoparticles.” 2018. Web. 23 Jan 2021.
Vancouver:
Rowbottom C. Investigation of Structure-Property Relationship of a High Temperature Polyimide Reinforced with Nanoparticles. [Internet] [Masters thesis]. Florida Atlantic University; 2018. [cited 2021 Jan 23].
Available from: http://fau.digital.flvc.org/islandora/object/fau:40848.
Council of Science Editors:
Rowbottom C. Investigation of Structure-Property Relationship of a High Temperature Polyimide Reinforced with Nanoparticles. [Masters Thesis]. Florida Atlantic University; 2018. Available from: http://fau.digital.flvc.org/islandora/object/fau:40848
University of Southern California
17.
Badmaev, Alexander.
Application of carbon nanotubes and graphene for digital and
analog electronics.
Degree: PhD, Physics, 2011, University of Southern California
URL: http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll127/id/658267/rec/851
► Carbon nanomaterials, one-dimensional (1D) carbon nanotubes and two-dimensional (2D) graphene, exhibit the highest electron mobility (~100,000 cm²/V/s at room temperature) among all conductors, and huge…
(more)
▼ Carbon nanomaterials, one-dimensional (1D)
carbon
nanotubes and two-dimensional (2D)
graphene, exhibit the highest
electron mobility (~100,000 cm²/V/s at room temperature) among all
conductors, and huge current carrying capacity of more than 10⁹
A/cm². Additionally, single-atomic thickness provides ideal
electrostatic geometry for field effect devices. These properties
make
carbon nanomaterials to be strong candidates to replace or
supplement conventional semiconductors. Theoretical and
experimental studies on individual
nanotubes and
graphene flakes
demonstrated superior performance of
carbon based field-effect
transistors (FETs). However, in order to realize this potential in
electronic applications, scalable synthesis and assembly of
carbon
nanomaterials, as well as further devices design and fabrication,
still remain to be a significant challenge. ❧ In this thesis, I
present our developments in order to overcome some of the critical
problems in practical implementation of
carbon based electronics.
In our approaches, we address issues starting from the scalable
controllable synthesis of
carbon nanomaterials and their assembly,
including design of electronic devices and material methods for
their fabrication, and, finally, integration of these devices into
functional circuits. This broad range of issues is tightly and
often inseparably inter-connected with each other, as can be seen
from an example of very large scale integrated (VLSI) silicon
electronics, therefore, ultimately presenting one major goal of
developing
carbon based electronics. ❧ The structure of the thesis
is as follows. Chapter 1 gives introduction to nano-scale
carbon
materials, their electronic properties and problems towards
realization of
carbon-based electronics. Chapter 2 presents
chemical vapor deposition (CVD) methods for synthesis of
carbon
nanotubes and
graphene. CVD synthesis methods proved to be highly
promising for large scale synthesis of high quality
carbon
nanomaterials. The presented CVD methods for scalable fabrication
of aligned
carbon nanotubes and large-area single layer
graphene
serve as a material basis for all the following chapters. Chapter 3
presents the development of
carbon nanotubes for digital
electronics application. Here, we use dense parallel arrays of
carbon nanotubes at wafer-scale, as an effective thin film to
achieve wafer-scale registration free fabrication of large number
of nanotube transistors, as well as integrated circuits such as
inverters, NAND and NOR logic gates. Chapter 4 presents the results
in application of
carbon nanotube transistors for radio frequency
(RF) electronics. In particular, I report RF and linearity
performance of transistors based on high-purity separated
semiconducting
nanotubes. Here, we conclude that semiconducting
nanotube FETs exhibit high potential for highly linear RF
electronics. In Chapter 5, I present our development of scalable
self-aligned fabrication of
graphene transistors. Here, we
developed novel highly scalable and reliable fabrication of
graphene transistors with…
Advisors/Committee Members: Zhou, Chongwu (Committee Chair), Haas, Stephan (Committee Member), Lu, Jia Grace (Committee Member), El-Naggar, Moh (Committee Member), Cronin, Stephen B. (Committee Member).
Subjects/Keywords: carbon nanotubes; graphene; transistors; electronics
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APA ·
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MLA ·
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CSE |
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APA (6th Edition):
Badmaev, A. (2011). Application of carbon nanotubes and graphene for digital and
analog electronics. (Doctoral Dissertation). University of Southern California. Retrieved from http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll127/id/658267/rec/851
Chicago Manual of Style (16th Edition):
Badmaev, Alexander. “Application of carbon nanotubes and graphene for digital and
analog electronics.” 2011. Doctoral Dissertation, University of Southern California. Accessed January 23, 2021.
http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll127/id/658267/rec/851.
MLA Handbook (7th Edition):
Badmaev, Alexander. “Application of carbon nanotubes and graphene for digital and
analog electronics.” 2011. Web. 23 Jan 2021.
Vancouver:
Badmaev A. Application of carbon nanotubes and graphene for digital and
analog electronics. [Internet] [Doctoral dissertation]. University of Southern California; 2011. [cited 2021 Jan 23].
Available from: http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll127/id/658267/rec/851.
Council of Science Editors:
Badmaev A. Application of carbon nanotubes and graphene for digital and
analog electronics. [Doctoral Dissertation]. University of Southern California; 2011. Available from: http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll127/id/658267/rec/851
Western Kentucky University
18.
Roe, Clarissa A.
Investigation of Carbon Nanomaterials Embedded in a Cementitious Matrix.
Degree: Master of Homeland Security Sciences, Department of Physics and Astronomy, 2016, Western Kentucky University
URL: https://digitalcommons.wku.edu/theses/1750
► The objective of this thesis was to investigate whether the addition of carbon nanofibers had an effect on the splitting tensile strength of Hydro-Stone…
(more)
▼ The objective of this thesis was to investigate whether the addition of
carbon nanofibers had an effect on the splitting tensile strength of Hydro-Stone gypsum concrete. The
carbon nanofibers used were single-walled
carbon nanotubes (
SWNT), buckminsterfullerene (C60), and
graphene oxide (GO). Evidence of the nanofibers interacting with gypsum crystals in a connective manner was identified in both 1 mm thick concrete discs and concrete columns possessing a height of 2 in and a diameter of 1 in. Before imaging, the columns were subjected to a splitting tensile strength test. The results illustrate that while there is a general decrease in strength with an increase in nanofibers for the
nanotubes and
graphene oxide, the addition of C60 did not noticeably effect the strength. This trend is consistent with trends determined by previous studies.
Advisors/Committee Members: Edward Kintzel (Director), Keith Andrew, and Ivan Novikov.
Subjects/Keywords: carbon nanotubes; graphene oxide; nanotechnology; Defense and Security Studies; Nanoscience and Nanotechnology; Quantum Physics
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APA (6th Edition):
Roe, C. A. (2016). Investigation of Carbon Nanomaterials Embedded in a Cementitious Matrix. (Masters Thesis). Western Kentucky University. Retrieved from https://digitalcommons.wku.edu/theses/1750
Chicago Manual of Style (16th Edition):
Roe, Clarissa A. “Investigation of Carbon Nanomaterials Embedded in a Cementitious Matrix.” 2016. Masters Thesis, Western Kentucky University. Accessed January 23, 2021.
https://digitalcommons.wku.edu/theses/1750.
MLA Handbook (7th Edition):
Roe, Clarissa A. “Investigation of Carbon Nanomaterials Embedded in a Cementitious Matrix.” 2016. Web. 23 Jan 2021.
Vancouver:
Roe CA. Investigation of Carbon Nanomaterials Embedded in a Cementitious Matrix. [Internet] [Masters thesis]. Western Kentucky University; 2016. [cited 2021 Jan 23].
Available from: https://digitalcommons.wku.edu/theses/1750.
Council of Science Editors:
Roe CA. Investigation of Carbon Nanomaterials Embedded in a Cementitious Matrix. [Masters Thesis]. Western Kentucky University; 2016. Available from: https://digitalcommons.wku.edu/theses/1750
Rice University
19.
Naumov, Anton Viatcheslavovich.
Advanced Characterization and Optical Properties of Single-Walled Carbon Nanotubes and Graphene Oxide.
Degree: PhD, Natural Sciences, 2011, Rice University
URL: http://hdl.handle.net/1911/70369
► Photophysical, electronic, and compositional properties of single-walled carbon nanotubes (SWCNTs) and bulk nanotube samples were investigated together with graphene oxide photoluminescence. First, we studied the…
(more)
▼ Photophysical, electronic, and compositional properties of single-walled
carbon nanotubes (SWCNTs) and bulk nanotube samples were investigated together with
graphene oxide photoluminescence. First, we studied the effect of external electric fields on SWCNT photoluminescence. Fields of up to 10 7 V/m caused dramatic, reversible decreases in emission intensity. Quenching efficiency was proportional to the projection of the field on the SWCNT axis, and showed inverse correlation with optical band gap. The magnitude of the effect was experimentally related to exciton binding energy, as consistent with a proposed field-induced exciton dissociation model. Further, the electronic composition of various SWCNT samples was studied. A new method was developed to measure the fraction of semiconducting
nanotubes in as- grown or processed samples. SWCNT number densities were compared in images from near-IR photoluminescence (semiconducting species) and AFM (all species) to compute the semiconducting fraction. The results provide important information about SWCNT sample compositions that can guide controlled growth methods and help calibrate bulk characterization techniques. The nature of absorption backgrounds in SWCNT samples was also studied. A number of extrinsic perturbations such as extensive ultrasonication, sidewall functionalization, amorphous
carbon impurities, and SWCNT aggregation were applied and their background contributions quantified. Spectral congestion backgrounds from overlapping absorption bands were assessed with spectral modeling. Unlike semiconducting
nanotubes, metallic SWCNTs gave broad intrinsic absorption backgrounds. The shape of the metallic background component and its absorptivity coefficient were determined. These results can be used to minimize and evaluate SWCNT absorption backgrounds. Length dependence of SWCNT optical properties was investigated. Samples were dispersed by ultrasonication or shear processing, and then length-fractionated by gel electrophoresis or controlled ultrasonication shortening. Fractions from both methods showed no significant absorbance variations with SWCNT length. The photoluminescence intensity increased linearly with length, and the relative quantum yield gradually increased, approaching a limiting value. Finally, a strong pH dependence of
graphene oxide photoluminescence was observed. Sharp and structured excitation/emission features resembling the spectra of molecular fluorophores were obtained in basic conditions. Based on the observed pH-dependence and quantum calculations, these spectral features were assigned to quasi-molecular fluorophores formed by the electronic coupling of oxygen-containing addends with nearby
graphene carbon atoms.
Advisors/Committee Members: Weisman, R. Bruce (advisor).
Subjects/Keywords: Applied sciences; Pure sciences; Single-walled carbon nanotubes; Graphene oxide; Photoluminescence; Nanomaterials; Nanoscience; Optics
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APA ·
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MLA ·
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to Zotero / EndNote / Reference
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APA (6th Edition):
Naumov, A. V. (2011). Advanced Characterization and Optical Properties of Single-Walled Carbon Nanotubes and Graphene Oxide. (Doctoral Dissertation). Rice University. Retrieved from http://hdl.handle.net/1911/70369
Chicago Manual of Style (16th Edition):
Naumov, Anton Viatcheslavovich. “Advanced Characterization and Optical Properties of Single-Walled Carbon Nanotubes and Graphene Oxide.” 2011. Doctoral Dissertation, Rice University. Accessed January 23, 2021.
http://hdl.handle.net/1911/70369.
MLA Handbook (7th Edition):
Naumov, Anton Viatcheslavovich. “Advanced Characterization and Optical Properties of Single-Walled Carbon Nanotubes and Graphene Oxide.” 2011. Web. 23 Jan 2021.
Vancouver:
Naumov AV. Advanced Characterization and Optical Properties of Single-Walled Carbon Nanotubes and Graphene Oxide. [Internet] [Doctoral dissertation]. Rice University; 2011. [cited 2021 Jan 23].
Available from: http://hdl.handle.net/1911/70369.
Council of Science Editors:
Naumov AV. Advanced Characterization and Optical Properties of Single-Walled Carbon Nanotubes and Graphene Oxide. [Doctoral Dissertation]. Rice University; 2011. Available from: http://hdl.handle.net/1911/70369
University of Sydney
20.
Deng, Yan.
Mechanical Characterization of Carbon Nanotubes/Graphene Oxides Grafted onto Carbon Fibres and Their Hybrid Composites
.
Degree: 2018, University of Sydney
URL: http://hdl.handle.net/2123/18590
► Carbon nanotubes (CNTs) and graphene oxides (GOs) grafted hybrid fibres are emerging as a class of material proposed to replace traditional carbon fibres (CFs) in…
(more)
▼ Carbon nanotubes (CNTs) and graphene oxides (GOs) grafted hybrid fibres are emerging as a class of material proposed to replace traditional carbon fibres (CFs) in reinforcing composite structures. Understanding the multi-scale mechanics is of great significance for future designing of high performance hybrid nanomaterials. This thesis investigates the mechanical properties of CNT/GO grafted CFs and their hybrid composites by utilizing both nanomechanical and micromechanical experimental techniques. The unique failure mechanisms of individual CNTs at nanoscale are investigated via in situ SEM pull-out, shear and peel tests. The effect of loading angle on the mixed mode adhesion toughness at a CNT-CF interface is investigated for the first time. An in situ peel test method that ensures a stable crack growth is developed for determining the adhesion energy between CNT-CNT and between CNT-CF. The shearing and failure behaviour of CNT-CNT junctions are investigated via in situ shear tests. A simple single-lap joint test is developed for determining the interfacial shear strength (IFSS) between fibre and matrix via non-instrument-specific technique. The influence of CNT grafting density on the IFSS is examined. A multi-scale analytical model is also developed. The mechanics of GO-grafted CF hybrid composites at each length scale are characterized via in situ pull-out tests and single-lap joint tests. In addition, single fibre tensile test results demonstrate that the strength of a CF could be maintained and even improved by introducing CNT/GO via our chemical grafting method. The high grafting strengths and enhanced tensile and interfacial shear strengths of the present CNT-CF and GO-CF hybrid materials can significantly increase the interfacial and impact properties for the next generation advanced aerospace composite structures.
Subjects/Keywords: Carbon nanotubes;
Graphene oxide;
Hybrid composites;
Mechanical properties;
Multi-scale analysis;
Nanomechanical Testing
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APA ·
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MLA ·
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to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Deng, Y. (2018). Mechanical Characterization of Carbon Nanotubes/Graphene Oxides Grafted onto Carbon Fibres and Their Hybrid Composites
. (Thesis). University of Sydney. Retrieved from http://hdl.handle.net/2123/18590
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Deng, Yan. “Mechanical Characterization of Carbon Nanotubes/Graphene Oxides Grafted onto Carbon Fibres and Their Hybrid Composites
.” 2018. Thesis, University of Sydney. Accessed January 23, 2021.
http://hdl.handle.net/2123/18590.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Deng, Yan. “Mechanical Characterization of Carbon Nanotubes/Graphene Oxides Grafted onto Carbon Fibres and Their Hybrid Composites
.” 2018. Web. 23 Jan 2021.
Vancouver:
Deng Y. Mechanical Characterization of Carbon Nanotubes/Graphene Oxides Grafted onto Carbon Fibres and Their Hybrid Composites
. [Internet] [Thesis]. University of Sydney; 2018. [cited 2021 Jan 23].
Available from: http://hdl.handle.net/2123/18590.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Deng Y. Mechanical Characterization of Carbon Nanotubes/Graphene Oxides Grafted onto Carbon Fibres and Their Hybrid Composites
. [Thesis]. University of Sydney; 2018. Available from: http://hdl.handle.net/2123/18590
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Illinois – Urbana-Champaign
21.
Heiranian, Mohammad.
Molecule transport in nanopores with applications to water purification, power generation and disease diagnosis.
Degree: PhD, Theoretical & Applied Mechans, 2020, University of Illinois – Urbana-Champaign
URL: http://hdl.handle.net/2142/108510
► High performance water transport in nanopores has drawn a great deal of attention in a variety of applications, such as water desalination, power generation and…
(more)
▼ High performance water transport in nanopores has drawn a great deal of attention in a variety of applications, such as water desalination, power generation and biosensing. A single-layer MoS2 nanopore is shown, here, to possess high water transport rate and strong salt rejection rate making it ideal for water desilation. High water transport enhancement factors in
carbon-based nanopores have been reported over the classical Hagen-Poiseuille (HP) equation which does not account for the physics of transport at molecular scale. Instead, comparing the experimentally measured transport rates to that of a theory, that accounts for the microscopic physics of transport, would result in enhancement factors approaching unity. Here, molecular corrections are introduced into HP equation by considering the variation of key hydrodynamical properties (viscosity and friction) with thickness and diameter of pores in ultrathin
graphene and finite-length
carbon nanotubes (CNTs) using Green-Kubo relations and molecular dynamics (MD) simulations. The corrected HP (CHP) theory, successfully predicts the permeation rates from non-equilibrium MD pressure driven flows. The previously reported enhancement factors over no-slip HP (of the order of 1000) approach unity when the permeations are normalized by the CHP flow rates.
In a follow-up study, we revisit Sampson’s theory after more than a century to account for the surface chemistry of nanopores by incorporating slippage and interfacial viscosity variation into the original Sampson’s theory. The HP theory works for flow in infinitely long tubes where end effects are neglected. In 1891, Ralph Allen Sampson came up with a formula, known as Sampson formula, within the fluid mechanics framework to describe flow in an infinitesimally thin orifice. Zeev Dagan, Sheldon Weinbaum and Robert Pfeffer published an article in the Journal of Fluid Mechanics in 1982, where the HP and Sampson formulas were combined to successfully describe flow in circular tubes of finite length. Although the Sampson formula is a powerful theory for end effects, it has been shown to lack accuracy for relatively small-radius pores (e.g., nanopores in single-layer
graphene membranes) since it does not account for the molecular interface chemistry. We show that the corrected Sampson’s theory is able to accurately describe flow in ultrathin nanopores when compared to the data from molecular dynamics simulations. Combining our corrected Sampson formula with the HP equation, we can remarkably predict flow in not only ultrathin pores but also finite-length pores such as
carbon nanotubes.
We also explored the structure and dynamics of aqueous ions in nanopores. At the nanopore interfaces, properties of ions are shown to differ largely from those of predicted by the classical ionic layering models (e.g., Gouy-Chapman electric double layer (EDL)) when the thickness of the nanopore is scaled down to the limit of ultrathin membranes (e.g, single-layer
graphene). Here, using extensive molecular dynamics, the structure and dynamics…
Advisors/Committee Members: Aluru, Narayana (advisor), Aluru, Narayana (Committee Chair), Bashir, Rashid (committee member), Nam, SungWoo (committee member), Shukla, Diwakar (committee member).
Subjects/Keywords: Nanopores; Nanofluidics; biophysics; DNA sequencing; Desalination; Graphene; Carbon Nanotubes; Molybdenum disulfide; Electric double layers; Hydrodynamics
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APA (6th Edition):
Heiranian, M. (2020). Molecule transport in nanopores with applications to water purification, power generation and disease diagnosis. (Doctoral Dissertation). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/108510
Chicago Manual of Style (16th Edition):
Heiranian, Mohammad. “Molecule transport in nanopores with applications to water purification, power generation and disease diagnosis.” 2020. Doctoral Dissertation, University of Illinois – Urbana-Champaign. Accessed January 23, 2021.
http://hdl.handle.net/2142/108510.
MLA Handbook (7th Edition):
Heiranian, Mohammad. “Molecule transport in nanopores with applications to water purification, power generation and disease diagnosis.” 2020. Web. 23 Jan 2021.
Vancouver:
Heiranian M. Molecule transport in nanopores with applications to water purification, power generation and disease diagnosis. [Internet] [Doctoral dissertation]. University of Illinois – Urbana-Champaign; 2020. [cited 2021 Jan 23].
Available from: http://hdl.handle.net/2142/108510.
Council of Science Editors:
Heiranian M. Molecule transport in nanopores with applications to water purification, power generation and disease diagnosis. [Doctoral Dissertation]. University of Illinois – Urbana-Champaign; 2020. Available from: http://hdl.handle.net/2142/108510
University of Georgia
22.
Bhatt, Nidhi.
Facile route to purification and separation of high aspect ratio single-walled carbon nanotubes and its application in electronics.
Degree: 2016, University of Georgia
URL: http://hdl.handle.net/10724/35562"
► Aqueous batch processing methods for the concurrent purification of single-walled carbon nanotube (SWNT) soot and enrichment in high aspect ratio nanotubes are essential to their…
(more)
▼ Aqueous batch processing methods for the concurrent purification of single-walled carbon nanotube (SWNT) soot and enrichment in high aspect ratio nanotubes are essential to their use in a wide variety of electronic, structural, and
mechanical applications. This manuscript presents a new route to the bulk purification and enrichment of unbundled SWNTs having average lengths in excess of 2 µm. Iterative centrifugation cycles at low centripetal force not only removed amorphous C and
catalyst nanoparticles, but also allowed the enhanced buoyancy of surfactant encapsulated, unbundled, high aspect ratio SWNTs to be used to isolate them in the supernatant. UV-Vis-NIR and Raman spectroscopy were used to verify the removal of residual
impurities from as-produced (AP-grade) arc discharge soot and the simultaneous enrichment in unbundled, undamaged, high aspect ratio SWNTs. The laminar flow deposition process (LFD) used to form 2-D networks of SWNTs prevents bundle formation during
network growth. Additionally, it further enhances the quality of deposits by taking advantage of the inverse relationship between the translational diffusion coefficient and length for suspended nanoparticles. This resulted in preferential deposition of
pristine, unbundled, high aspect ratio SWNTs over residual impurities, as observed by Raman spectroscopy and atomic force microscopy (AFM).
Subjects/Keywords: Single-walled Carbon Nanotubes (SWNT); Laminar Flow Depostion (LFD); centriguation
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APA (6th Edition):
Bhatt, N. (2016). Facile route to purification and separation of high aspect ratio single-walled carbon nanotubes and its application in electronics. (Thesis). University of Georgia. Retrieved from http://hdl.handle.net/10724/35562"
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Bhatt, Nidhi. “Facile route to purification and separation of high aspect ratio single-walled carbon nanotubes and its application in electronics.” 2016. Thesis, University of Georgia. Accessed January 23, 2021.
http://hdl.handle.net/10724/35562".
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Bhatt, Nidhi. “Facile route to purification and separation of high aspect ratio single-walled carbon nanotubes and its application in electronics.” 2016. Web. 23 Jan 2021.
Vancouver:
Bhatt N. Facile route to purification and separation of high aspect ratio single-walled carbon nanotubes and its application in electronics. [Internet] [Thesis]. University of Georgia; 2016. [cited 2021 Jan 23].
Available from: http://hdl.handle.net/10724/35562".
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Bhatt N. Facile route to purification and separation of high aspect ratio single-walled carbon nanotubes and its application in electronics. [Thesis]. University of Georgia; 2016. Available from: http://hdl.handle.net/10724/35562"
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
23.
Bourourou, Mariem.
Conception des bioélectrodes enzymatiques à base de nanomatériaux dans des piles à combustible et des capteurs : Design of enzymatic bioelectrodes based on nano-materials for fuel cells and sensors.
Degree: Docteur es, Matériaux, mécanique, génie civil, électrochimie, 2015, Université Grenoble Alpes (ComUE); Faculté des Sciences de Monastir (Tunisie)
URL: http://www.theses.fr/2015GREAI043
► Le travail présenté dans ce manuscrit est une contribution à la recherche sur la mise en forme d'une nouvelle classe de bioélectrodes nanostructurées, principalement à…
(more)
▼ Le travail présenté dans ce manuscrit est une contribution à la recherche sur la mise en forme d'une nouvelle classe de bioélectrodes nanostructurées, principalement à base de nanotubes de carbone (NTCs). L'oxyde de graphène (GO) a été également évalué pour des applications bioélectrochimiques. Les procédés de fabrication développés autorisent l'ajout d'additifs tels que des médiateurs et des polymères. L'optimisation de la connexion enzymatique de la laccase pour la réduction de l'O2 sur des matrices de nanotubes de carbone ainsi que de la polyphénol oxydase (PPO) pour la détection électrochimique de l'ortho-quinone généré enzymatiquement a été étudiée. Dans un premier temps, le transfert d'électrons direct avec la laccase a été optimisé dans une matrice nanostructurée de NTCs. Dans ce contexte, nous avons examiné plusieurs approches pour immobiliser la laccase tout en l'orientant grâce à l'utilisation de dérivés de l'anthraquinone afin d'améliorer les performances catalytiques de la biocathode. L'immobilisation et l'orientation de l'enzyme ont été réalisées par fonctionnalisation des électrodes par le pyrène-mono-anthraquinone et le pyrène-bis-anthraquinone. La seconde partie présente la préparation d'une autre cathode basée sur la connexion indirecte de la laccase à une matrice nanostructurée de NTCs (buckypaper) contenant du bis-pyrène-ABTS comme médiateur rédox et comme réticulant pour la stabilité mécanique améliorée de ce buckypaper. La dernière partie de ce travail a été consacrée à la production de fibres par filage électrostatique à partir de deux mélanges différents: NTCs/ PAN(polyacrylonitrile) et GO/PAN. De telles fibres ont été utilisées comme électrodes pour des applications bioanalytiques et la bioconversion d'énergie.
This thesis is devoted to the development of a new class of freestanding nanostructured bioelectrodes mainly based on carbon nanotubes (CNTs) Graphene oxide (GO) was also evaluated for its appropriateness for the treated bioelectrochemical approaches. The developed manufacturing processes forming CNTs slides (Buckypapers) or electrospun tissues also allow the confinement with additives like mediators or polymers. The optimization of the enzymatic connection of laccase, for O2 reduction on carbon nanotube arrays, and the polyphenol oxidase (PPO) for the electrochemical detection of enzymatically generated electroactive ortho-quinone was studied. Initially, direct electron transfer of laccase is optimized in a nanostructured CNTs matrix. We examined several approaches to immobilize and orient the laccase using anthraquinone derivatives while improving the catalytic performance of the biocathode. These immobilisation and orientation strategies on electrodes are performed by functionalization using pyrene-mono-Anthraquinone and pyrene-bis-anthraquinone. The second part of this thesis shows the preparation of another biocathode based on the indirect connection of laccase in nanostructured CNT buckypapers containing bis-pyrene-ABTS as a redox mediator and cross-linker, enhancing the…
Advisors/Committee Members: Cosnier, Serge (thesis director), Holzinger, Michael (thesis director), Maaref, Abderrazak (thesis director).
Subjects/Keywords: Nanotubes de carbone; Biocapteurs; Oxyde de graphène; Médiateurs rédox; Biocathodes; Carbon nanotubes; Graphene oxide; Biocathodes; Biosensors; Redox mediators; 620
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APA (6th Edition):
Bourourou, M. (2015). Conception des bioélectrodes enzymatiques à base de nanomatériaux dans des piles à combustible et des capteurs : Design of enzymatic bioelectrodes based on nano-materials for fuel cells and sensors. (Doctoral Dissertation). Université Grenoble Alpes (ComUE); Faculté des Sciences de Monastir (Tunisie). Retrieved from http://www.theses.fr/2015GREAI043
Chicago Manual of Style (16th Edition):
Bourourou, Mariem. “Conception des bioélectrodes enzymatiques à base de nanomatériaux dans des piles à combustible et des capteurs : Design of enzymatic bioelectrodes based on nano-materials for fuel cells and sensors.” 2015. Doctoral Dissertation, Université Grenoble Alpes (ComUE); Faculté des Sciences de Monastir (Tunisie). Accessed January 23, 2021.
http://www.theses.fr/2015GREAI043.
MLA Handbook (7th Edition):
Bourourou, Mariem. “Conception des bioélectrodes enzymatiques à base de nanomatériaux dans des piles à combustible et des capteurs : Design of enzymatic bioelectrodes based on nano-materials for fuel cells and sensors.” 2015. Web. 23 Jan 2021.
Vancouver:
Bourourou M. Conception des bioélectrodes enzymatiques à base de nanomatériaux dans des piles à combustible et des capteurs : Design of enzymatic bioelectrodes based on nano-materials for fuel cells and sensors. [Internet] [Doctoral dissertation]. Université Grenoble Alpes (ComUE); Faculté des Sciences de Monastir (Tunisie); 2015. [cited 2021 Jan 23].
Available from: http://www.theses.fr/2015GREAI043.
Council of Science Editors:
Bourourou M. Conception des bioélectrodes enzymatiques à base de nanomatériaux dans des piles à combustible et des capteurs : Design of enzymatic bioelectrodes based on nano-materials for fuel cells and sensors. [Doctoral Dissertation]. Université Grenoble Alpes (ComUE); Faculté des Sciences de Monastir (Tunisie); 2015. Available from: http://www.theses.fr/2015GREAI043
Indian Institute of Science
24.
Tripathi, Shalini.
Electron Microscopy Investigation of Formation Mechanism, Structure and Stability of Functional Nanostructures & Hybrids.
Degree: PhD, Faculty of Science, 2018, Indian Institute of Science
URL: http://etd.iisc.ac.in/handle/2005/4045
► Micro/nano-structural characteristics of functional materials play a crucial role in their properties. In that spirit, it is of utmost importance to explore the ‘room at…
(more)
▼ Micro/nano-structural characteristics of functional materials play a crucial role in their properties. In that spirit, it is of utmost importance to explore the ‘room at the bottom’, to characterize the functional nanomaterials to the smallest possible scale. Transmission electron microscopes have the capability to perform imaging, diffraction, and spectroscopy and are thus indispensable for studying functional nanomaterials. Furthermore, in-situ experiments in a TEM give a way to observe processes in-action, imparting a capability of ‘see’ing a process.
This thesis work has exploited electron microscopy for investigating various nanomaterials, enabling to obtain a wealth of information and insights leading to their applications. Keeping in mind the simplicity and importance of wet chemical synthesis route, the optimum reaction parameters required for the nucleation and growth of desired nanostructures is explored. In combination with various other characterization techniques, the formation mechanism, structure and stability of synthesized nanostructures and their hybrids are investigated primarily targeting the electronic properties and catalytic applications.
The entire thesis study is organized as follows:
Chapter 1 gives a general introduction of nanomaterials and their role in different fields of application. The need for shape, size and phase control of nanostructures and their hybrids has been described. Classification of these nanomaterials and the importance of tuning their property based on their dimensionality are highlighted. The problems and challenges in stabilization of the materials at nanoscale are discussed elaborating the existing methodologies used to overcome the challenges. The detailed information of the synthetic protocol, basic techniques utilized to characterize the materials in study is reported in the respective chapters.
Chapter 2 describes various methods and techniques used to synthesize and characterize various functional nanostructures synthesized in this thesis via wet-chemical synthesis. A very brief description of the working principles of different techniques used in the characterization of the materials is presented.
Chapter 3 exploits the Kirkendall mechanism at nanoscale for the formation of hollow
nanotubes of Zn2SiO4 and SiO2 using a two-step process: a wet-chemical synthesis of core−shell nanostructure of
ZnO@SiO2 followed by thermal annealing. While annealing in air leads to the formation of hollow Zn2SiO4, annealing under reducing atmosphere leads to the formation of SiO2
nanotubes. While the imaging reveals the operative Kirkendall process, diffraction characteristics and high-resolution (HR) TEM imaging pinpoints the temperature of nanotube formation. Detailed in-situ TEM has been carried out for Zn2SiO4 nanotube formation from a
ZnO@SiO2 core-shell structure results clearly indicating void nucleation at the interface of
ZnO and the silica shell and the evolution of the silicate phase through the Kirkendall effect. Furthermore, the ambience of the reaction was…
Advisors/Committee Members: Ravishankar, N (advisor).
Subjects/Keywords: Nanostructures - Formation Mechanism; Nanomaterials; Functional Nanomaterials; Zn2SiO4 Nanotubes; SiO2 Nanotubes; ZnO Nanorods; Te Nanowires; PtBi Nanoparticle; Au Nanocrystals; Graphene - Tellurium Nanowire; WO3; Tungsten Oxide; Materials Science
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APA (6th Edition):
Tripathi, S. (2018). Electron Microscopy Investigation of Formation Mechanism, Structure and Stability of Functional Nanostructures & Hybrids. (Doctoral Dissertation). Indian Institute of Science. Retrieved from http://etd.iisc.ac.in/handle/2005/4045
Chicago Manual of Style (16th Edition):
Tripathi, Shalini. “Electron Microscopy Investigation of Formation Mechanism, Structure and Stability of Functional Nanostructures & Hybrids.” 2018. Doctoral Dissertation, Indian Institute of Science. Accessed January 23, 2021.
http://etd.iisc.ac.in/handle/2005/4045.
MLA Handbook (7th Edition):
Tripathi, Shalini. “Electron Microscopy Investigation of Formation Mechanism, Structure and Stability of Functional Nanostructures & Hybrids.” 2018. Web. 23 Jan 2021.
Vancouver:
Tripathi S. Electron Microscopy Investigation of Formation Mechanism, Structure and Stability of Functional Nanostructures & Hybrids. [Internet] [Doctoral dissertation]. Indian Institute of Science; 2018. [cited 2021 Jan 23].
Available from: http://etd.iisc.ac.in/handle/2005/4045.
Council of Science Editors:
Tripathi S. Electron Microscopy Investigation of Formation Mechanism, Structure and Stability of Functional Nanostructures & Hybrids. [Doctoral Dissertation]. Indian Institute of Science; 2018. Available from: http://etd.iisc.ac.in/handle/2005/4045
Brigham Young University
25.
Xin, Huijun.
DNA-Templated Surface Alignment and Characterization of Carbon Nanotubes.
Degree: PhD, 2006, Brigham Young University
URL: https://scholarsarchive.byu.edu/cgi/viewcontent.cgi?article=1746&context=etd
► Carbon nanotubes are appealing materials for nanofabrication due to their unique properties and structures. However, for carbon nanotubes to be used in mass-fabricated devices, precise…
(more)
▼ Carbon nanotubes are appealing materials for nanofabrication due to their unique properties and structures. However, for carbon nanotubes to be used in mass-fabricated devices, precise control of nanotube orientation and location on surfaces is critical. I have developed a technique to align single-walled carbon nanotubes (SWNTs) on surfaces from a droplet of nanotube suspension under gas flow. Fluid motion studies indicate that alignment is likely due to circulation of SWNTs in the droplet. My work provides a facile method for generating oriented nanotubes for nanodevice applications. I have also devised an approach for localizing SWNTs onto 1-pyrenemethylamine-decorated DNA on surfaces. I found that 63% of SWNTs on surfaces were anchored along DNA, and these nanotubes covered ~5% of the total DNA length. This technique was an initial demonstration of DNA-templated SWNT localization. In an improved method to localize SWNTs on DNA templates, dodecyltrimethylammonium bromide was utilized to suspend SWNTs in aqueous media and localize them on DNA electrostatically. SWNT positioning was controlled by the surface DNA arrangement, and the extent of deposition was influenced by the SWNT concentration and number of treatments. Under optimized conditions, 83% of the length of surface DNAs was covered with SWNTs, and 76% of the deposited SWNTs were on DNA. In some regions, nearly continuous SWNT assemblies were formed. This approach should be useful for the fabrication of nanotube nanowires in nanoelectronic circuits. Using my improved procedures, I have localized SWNTs on DNA templates across electrodes and measured the electrical properties of DNA-templated SWNT assemblies. When a DNA-templated SWNT was deposited on top of and bridging electrodes, the measured conductance was comparable to literature values. In contrast, SWNTs with end-on contacts to the sides of electrodes had conductances hundreds of times lower than literature values, probably due to gaps between the SWNT ends and the electrodes. This work provides a novel approach for localizing SWNTs across contacts in a controlled manner. These results may be useful in the fabrication of nanoelectronic devices such as transistors with SWNTs as active components. Moreover, this approach could be valuable in arranging SWNTs as electrical interconnects for nanoelectronics applications.
Subjects/Keywords: Nanofabrication; Nanowires; DNA-templated; Single-walled carbon nanotubes; SWNT; Nanoelectronics; Biochemistry; Chemistry
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APA ·
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APA (6th Edition):
Xin, H. (2006). DNA-Templated Surface Alignment and Characterization of Carbon Nanotubes. (Doctoral Dissertation). Brigham Young University. Retrieved from https://scholarsarchive.byu.edu/cgi/viewcontent.cgi?article=1746&context=etd
Chicago Manual of Style (16th Edition):
Xin, Huijun. “DNA-Templated Surface Alignment and Characterization of Carbon Nanotubes.” 2006. Doctoral Dissertation, Brigham Young University. Accessed January 23, 2021.
https://scholarsarchive.byu.edu/cgi/viewcontent.cgi?article=1746&context=etd.
MLA Handbook (7th Edition):
Xin, Huijun. “DNA-Templated Surface Alignment and Characterization of Carbon Nanotubes.” 2006. Web. 23 Jan 2021.
Vancouver:
Xin H. DNA-Templated Surface Alignment and Characterization of Carbon Nanotubes. [Internet] [Doctoral dissertation]. Brigham Young University; 2006. [cited 2021 Jan 23].
Available from: https://scholarsarchive.byu.edu/cgi/viewcontent.cgi?article=1746&context=etd.
Council of Science Editors:
Xin H. DNA-Templated Surface Alignment and Characterization of Carbon Nanotubes. [Doctoral Dissertation]. Brigham Young University; 2006. Available from: https://scholarsarchive.byu.edu/cgi/viewcontent.cgi?article=1746&context=etd
Queensland University of Technology
26.
Piloto, Carlo.
Carbon nanomaterials for room temperature gas sensing.
Degree: 2016, Queensland University of Technology
URL: http://eprints.qut.edu.au/97743/
► The aim of this research is to develop high performance gas sensors with low power consumption and high portability. This was achieved by synthesizing carbon…
(more)
▼ The aim of this research is to develop high performance gas sensors with low power consumption and high portability. This was achieved by synthesizing carbon nanomaterials decorated with alkali-metal dopants and metal oxides, and by optimizing ultrathin layer of carbon nanobutes coupled to a new deposition technique. These materials demonstrated excellent sensitivity at room temperature to both nitrogen dioxide and ammonia, down to ppm level, providing a new pathway to realise room temperature gas sensors. Our fabrication methods are highly scalable and do not involve the use of expensive equipment which makes them excellent candidates for mass production.
Subjects/Keywords: Gas sensor; Nitrogen dioxide; ultrathin films; Caesium; surfactant-free; Carbon nanotubes; Graphene oxide; metal oxide; hybrid nanostructures; dip coating
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APA (6th Edition):
Piloto, C. (2016). Carbon nanomaterials for room temperature gas sensing. (Thesis). Queensland University of Technology. Retrieved from http://eprints.qut.edu.au/97743/
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Piloto, Carlo. “Carbon nanomaterials for room temperature gas sensing.” 2016. Thesis, Queensland University of Technology. Accessed January 23, 2021.
http://eprints.qut.edu.au/97743/.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Piloto, Carlo. “Carbon nanomaterials for room temperature gas sensing.” 2016. Web. 23 Jan 2021.
Vancouver:
Piloto C. Carbon nanomaterials for room temperature gas sensing. [Internet] [Thesis]. Queensland University of Technology; 2016. [cited 2021 Jan 23].
Available from: http://eprints.qut.edu.au/97743/.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Piloto C. Carbon nanomaterials for room temperature gas sensing. [Thesis]. Queensland University of Technology; 2016. Available from: http://eprints.qut.edu.au/97743/
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Indian Institute of Science
27.
Das, Anindya.
Graphene And Carbon Nanotubes : Field Induced Doping, Interaction With Nucleobases, Confined Water And Sensors.
Degree: PhD, Faculty of Science, 2010, Indian Institute of Science
URL: http://etd.iisc.ac.in/handle/2005/964
► This thesis presents experimental and related theoretical studies of single layer graphene, bilayer graphene and single walled carbon nanotubes. The thesis is divided into three…
(more)
▼ This thesis presents experimental and related theoretical studies of single layer
graphene, bilayer
graphene and single walled
carbon nanotubes. The thesis is divided into three parts; the first part describes the phonon renormalization due to doping in two dimensional
graphene and one dimensional
carbon nanotubes. In the recent years, there is a tremendous interest both experimentally and theoretically, in the issues related to electron-phonon coupling in
nanotubes and
graphene. Theoretically, it is expected that the presence of Kohn anomalies in
graphene and metallic
nanotubes will result in significant changes in the self energy of phonons due to doping. In particular, with Fermi energy shift how the blockage of phonon decay (due to Pauli Exclusion Principle) into electron-hole excitations changes the phonon frequencies as well as its life time have been studied in details in the first part of the thesis. Since in
graphene and metallic
nanotubes, the momentum relaxation time of electrons is comparable to the phonon pulsation time, the phonon cannot be treated as a static perturbation and hence non-adiabatic effects are taken into account using time dependent perturbation theory. Electron-phonon coupling constant is also a key parameter to understand the mobility of carrier due to electron scattering by optical phonons at room temperature and limitation of the maximum current carrying capacity of
graphene and
nanotubes. All these parameters are determined in the first part of the thesis by performing in-situ transport and Raman measurements on
graphene and
nanotubes based field effect transistors. The second part of the thesis deals with the interaction of bio-molecules (nucleobases) with the
nanotubes and
graphene. The binding energies of various nucleobases with
nanotubes and
graphene have been calculated theoretically using quantum chemical and classical force field calculations, and experimentally from isothermal titration (micro) calorimetry. In this part we also present an experimental study on the dynamics of water confined inside the
carbon nanotubes. Proton nuclear magnetic resonance studies have been used to probe the freezing and dynamics of the confined water inside 1.4 nm diameter single walled
carbon nanotubes. We have observed that the confined water does not freeze up to 223K. The dynamics of confined water has been studied using pulsed field gradient technique. The decay of spin echo intensity as a function of gradient field shows characteristic features of water confined in unidimensional channels. From the decay profiles the mean squared displacement of water molecules is obtained for different diffusive times, showing an unambiguous evidence of single file diffusion of water molecules inside the
nanotubes i.e mean squared displacement varying as square root of time. In the last part, we have developed
carbon nanotube based vibration sensor and accelerometer to detect the vibrations of liquid and solid, respectively, using the property of voltage generation in
nanotubes due to liquid flow.
Advisors/Committee Members: Sood, Ajay K (advisor).
Subjects/Keywords: Carbon - Nanotechnology; Carbon Nanotubes; Graphene; Water Doping; Sensor Doping; Graphene - Phonon Renormalization; Carbon Nanotubes - Phonon Renormalization; Dopants; Graphene Transistor; Single Walled Carbon Nanotubes (SWNT); Nucleobases; Confined Water; Sensors; Nanotubes; Chemical Physics
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APA (6th Edition):
Das, A. (2010). Graphene And Carbon Nanotubes : Field Induced Doping, Interaction With Nucleobases, Confined Water And Sensors. (Doctoral Dissertation). Indian Institute of Science. Retrieved from http://etd.iisc.ac.in/handle/2005/964
Chicago Manual of Style (16th Edition):
Das, Anindya. “Graphene And Carbon Nanotubes : Field Induced Doping, Interaction With Nucleobases, Confined Water And Sensors.” 2010. Doctoral Dissertation, Indian Institute of Science. Accessed January 23, 2021.
http://etd.iisc.ac.in/handle/2005/964.
MLA Handbook (7th Edition):
Das, Anindya. “Graphene And Carbon Nanotubes : Field Induced Doping, Interaction With Nucleobases, Confined Water And Sensors.” 2010. Web. 23 Jan 2021.
Vancouver:
Das A. Graphene And Carbon Nanotubes : Field Induced Doping, Interaction With Nucleobases, Confined Water And Sensors. [Internet] [Doctoral dissertation]. Indian Institute of Science; 2010. [cited 2021 Jan 23].
Available from: http://etd.iisc.ac.in/handle/2005/964.
Council of Science Editors:
Das A. Graphene And Carbon Nanotubes : Field Induced Doping, Interaction With Nucleobases, Confined Water And Sensors. [Doctoral Dissertation]. Indian Institute of Science; 2010. Available from: http://etd.iisc.ac.in/handle/2005/964
University of Western Ontario
28.
Chen, Longyi.
Development of Nanostructured Glucose Biosensor.
Degree: 2018, University of Western Ontario
URL: https://ir.lib.uwo.ca/etd/5178
► With the development of nanotechnology and nanomaterials, biosensors incorporated with novel nanomaterials and nanostructures have shown significant potential in point-of-care medical devices because of their…
(more)
▼ With the development of nanotechnology and nanomaterials, biosensors incorporated with novel nanomaterials and nanostructures have shown significant potential in point-of-care medical devices because of their rapid interaction with target analytes and their miniaturized systems. Nanomaterials and nanostructures with special chemical, physical and biological characteristics are able to enhance biosensors’ performance in terms of sensitivity and selectivity. Therefore, my study focused on development of special nanostructures used for advanced glucose biosensor. Monitoring of blood glucose level is essential for diabetes management. However, current methods require people with diabetes to have blood test with 5-8 times per day. Compared to other methods, optical and magnetic techniques have a potential in developing minimally invasive or non-invasive, and continuous glucose monitoring nanostructured biosensors. Consequently, this thesis presented nanostructured optical and magnetic glucose biosensors by incorporating novel nanomaterials and fabricating nanostructures for the next generation of glucose biosensor in the tears. The glucose biorecognition biomolecule used in the biosensors was Concanavalin A (Con A). Con A is a lectin protein that has strong affinity to glucose.
Fluorescence resonance energy transfer (FRET) technique was applied to develop optical glucose biosensors. FRET biosensor is a distance-dependent biosensor. The fluorescence emission of a donor molecule could be used to excite acceptor when the distance between donor and acceptor is close enough (< 20 nm). Three different types of nanostructures were developed and used as the donors of the glucose FRET biosensors. The first type of sensor is a ZnO/quantum dots-based glucose biosensors. Hybrid ZnO nanorod array with decoration of CdSe/ZnS quantum dots were prepared and coated on silicone hydrogel which is a common materials of contact lens. The patterned nanostructured FRET sensor could quickly measure rats’ tear glucose in an extremely small amount (2 µL) of diluted tear sample. The second type of biosensor is based on upconversion nanomaterials. Upconversion NaGdF4: Yb, Er nanoparticles with diameter of about 40±5 nm have been prepared by polyol process and coated on silicone hydrogel to directly sense the tear glucose level on the rats’ eye surface. The results show that the upconversion nanomaterials based lens sensor is able to quickly measure glucose in rats’ blood samples. The third type of sensor utilizes the unique optical properties of carbon nanomaterial, fluorescent carbon dots and graphene oxide nanosheets. The carbon dots with tunable fluorescence were developed by a microwave-assisted process. The carbon dots are used as a fluorescence donor in the biosensor, the chitosan coated graphene oxide acts as the fluorescence acceptor to quench the emission of carbon quantum dots. In the presence of glucose, the emission of carbon quantum dots could be restored as a function of the concentration of glucose. Two linear relationships of the…
Subjects/Keywords: Diabetes; glucose sensing; nanostructured glucose biosensor; ZnO nanorod; quantum dots; upconverting nanoparticles; silicone hydrogel; carbon dots; graphene oxide; FeCo nanoparticles; graphene; fluorescence; magnetoresistance
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APA (6th Edition):
Chen, L. (2018). Development of Nanostructured Glucose Biosensor. (Thesis). University of Western Ontario. Retrieved from https://ir.lib.uwo.ca/etd/5178
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Chen, Longyi. “Development of Nanostructured Glucose Biosensor.” 2018. Thesis, University of Western Ontario. Accessed January 23, 2021.
https://ir.lib.uwo.ca/etd/5178.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Chen, Longyi. “Development of Nanostructured Glucose Biosensor.” 2018. Web. 23 Jan 2021.
Vancouver:
Chen L. Development of Nanostructured Glucose Biosensor. [Internet] [Thesis]. University of Western Ontario; 2018. [cited 2021 Jan 23].
Available from: https://ir.lib.uwo.ca/etd/5178.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Chen L. Development of Nanostructured Glucose Biosensor. [Thesis]. University of Western Ontario; 2018. Available from: https://ir.lib.uwo.ca/etd/5178
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Indian Institute of Science
29.
Selvakumar, N.
Novel 1-D and 2-D Carbon Nanostructures Based Absorbers for Photothermal Applications.
Degree: PhD, Faculty of Science, 2018, Indian Institute of Science
URL: http://etd.iisc.ac.in/handle/2005/3224
► Solar thermal energy is emerging as an important source of renewable energy for meeting the ever-increasing energy requirements of the world. Solar selective coatings are…
(more)
▼ Solar thermal energy is emerging as an important source of renewable energy for meeting the ever-increasing energy requirements of the world. Solar selective coatings are known to enhance the efficiency of the photo thermal energy conversion. An ideal solar selective coating has zero reflectance in the solar spectrum region (i.e., 0.3-2.5 µm) and 100% reflectance in the infrared (IR) region (i.e. 2.5-50 µm). In this thesis, novel
carbon nanotubes (CNT) and
graphene based absorbers have been developed for photo thermal applications.
Carbon nanotubes have good optical properties (i.e., α and ε close to 1), high aspect ratios (> 150), high surface area (470 m2/g) and high thermal conductivity (> 3000 W/mK), which enable rapid heat transfer from the CNTs to the substrates. Similarly,
graphene also exhibits high transmittance (97%), low reflectance, high thermal conductivity (5000 W/mK) and high oxidation resistance behaviour. The major drawback of using CNTs for photothermal applications is that it exhibits poor spectral selectivity (i.e., α/ε = 1). In other words, it acts as a blackbody absorber. On the other hand,
graphene exhibits poor intrinsic absorption behaviour (α - 2.3%) in a broad wavelength range (UV-Near IR).
The main objective of the present study is to develop CNT and
graphene based absorbers for photothermal conversion applications. The growth of CNT and
graphene was carried out using chemical vapour deposition and sputtering techniques. An absorber-reflector tandem concept was used to develop the CNT based tandem absorber (Ti/Al2O3/Co/CNT). The transition from blackbody absorber to solar selective absorber was achieved by varying the CNT thicknesses and by using a suitable underlying absorber (Ti/Al2O3). A simple multilayer heat mirror concept was used to develop the
graphene based multilayer absorber (SiO2/
graphene/Cu/
graphene). The transition from high transmitance to high absorptance was achieved by varying the Cu thickness. The refractive indices and the extinction coefficients of Ti/Al2O3, AlTiO and
graphene samples were determined by the phase-modulated spectroscopic ellipsometric technique. Finally, the optical properties (i.e., absorptance and the emittance) of the CNT and
graphene based absorbers were investigated.
Chapter 1 gives a brief introduction about solar thermal energy, spectrally selective coating and photothermal conversion. The different types of absorbers used to achieve the spectral selectivity have also been discussed shortly. A brief description about the
carbon-based materials/allotropes and their properties are outlined. The properties of
carbon nanotubes and
graphene which are the 1-D and 2-D allotropes of
carbon, respectively are tabulated. A detailed literature survey was carried out in order to identify the potential candidates for the photothermal conversion applications. The objectives and the scope of the thesis are also discussed in this chapter.
Chapter 2 discusses the deposition and characterization techniques used for the growth and the study of 1-D and 2-D
carbon…
Advisors/Committee Members: Krupanidhi, S B (advisor).
Subjects/Keywords: Carbon Nanostructured Based Absorbers; Carbon Based Materials; Carbon Nanotubes Optical Studies; 2-D Carbon Nanostructures; Micro-Raman Spectroscopy; Tandem Absorber; Carbon Nanostructures; Al2O3 Layer; Carbon Nanotubes; Tunable Spectral Selectivity; Graphene Oxide; Graphene; Materials Research Centre
Record Details
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Selvakumar, N. (2018). Novel 1-D and 2-D Carbon Nanostructures Based Absorbers for Photothermal Applications. (Doctoral Dissertation). Indian Institute of Science. Retrieved from http://etd.iisc.ac.in/handle/2005/3224
Chicago Manual of Style (16th Edition):
Selvakumar, N. “Novel 1-D and 2-D Carbon Nanostructures Based Absorbers for Photothermal Applications.” 2018. Doctoral Dissertation, Indian Institute of Science. Accessed January 23, 2021.
http://etd.iisc.ac.in/handle/2005/3224.
MLA Handbook (7th Edition):
Selvakumar, N. “Novel 1-D and 2-D Carbon Nanostructures Based Absorbers for Photothermal Applications.” 2018. Web. 23 Jan 2021.
Vancouver:
Selvakumar N. Novel 1-D and 2-D Carbon Nanostructures Based Absorbers for Photothermal Applications. [Internet] [Doctoral dissertation]. Indian Institute of Science; 2018. [cited 2021 Jan 23].
Available from: http://etd.iisc.ac.in/handle/2005/3224.
Council of Science Editors:
Selvakumar N. Novel 1-D and 2-D Carbon Nanostructures Based Absorbers for Photothermal Applications. [Doctoral Dissertation]. Indian Institute of Science; 2018. Available from: http://etd.iisc.ac.in/handle/2005/3224
University of Wollongong
30.
Jeong, Hyeon Taek.
Fabrication of stretchable and flexible
supercapacitor using nanocarbon based
materials.
Degree: Doctor of
Philosophy, 2015, University of Wollongong
URL: ;
https://ro.uow.edu.au/theses/4410
► Stretchable and/or flexible electronic devices have emerged as a new generation technologies for wearable and implantable including high performance sportswear, wearable displays and bio-integrated…
(more)
▼ Stretchable and/or
flexible electronic devices have emerged as a new
generation technologies for wearable and implantable
including high performance sportswear, wearable displays
and bio-integrated devices. Stretchable and rechargeable
energy storage devices are essential component of fully
stretchable and flexible electronic devices. The
stretchable and flexible supercapacitors are promising
candidates due to their high power density, long life,
durability and safety. In this thesis,
we have demonstrated stretchable and flexible
supercapacitors base on nanocarbon materials such as,
carbon nanotubes (CNTs) and reduced graphene oxide (rGO).
Nanocarbon material based supercapacitors have been
extensively investigated. However, to date nanocarbon
material based supercapacitors have not been investigated
for use as stretchable and flexible energy storage
devices. Therefore, the theme of this thesis is to
successfully design and develop novel nanocarbon material
based stretchable and flexible supercapacitors with high
durability and performance. Chapter 1 introduces
nanocarbon-based materials such as, carbon nanotubes
(CNTs) and graphene with literature review of
nanocarbon-based electrode and supercapacitor for
investigation of nanocarbon material based energy storage
devices. Chapter 2 also introduces
general experimental including chemical, reagents,
characterization methodology, instrumentation and
fundamental of the electrochemistry. Chapter 3
investigates the development of stretchable electrode by
incorporating acid-treated single-wall nanotubes (SWCNTs)
onto latex (natural rubber) substrate using spray coating
technique. The use of acid-treated single-wall carbon
nanotubes (SWCNTs) improves capacitance due to increased
functional groups on the SWCNTs. Electrochemical
properties of the electrode are determined using cyclic
voltammetry (CV) and electrochemical impedance
spectroscopy (EIS). Galvanostatic charge/discharge tests
are also carried out. The impedance and charge/discharge
curves of the latex/SWCNTs electrode show good capacitive
behaviour even after repetitive stretching to 100%
strain. The highest capacitance value obtained for the
unstretched SWCNTs electrode is 119 F g-1 in 1 M Na2SO4
at 5 mV s-1. After 100 stretches approximately 80% of the
original capacitance was retained. In
chapter 4, a novel reduced graphene oxide
(rGO)/single-wall carbon nanotubes (SWCNTs) composite
electrode on stretchable polyurethane substrate was
developed. The ratio between rGO and SWCNTs is optimized
in order to obtain…
Subjects/Keywords: Stretchable and flexible
supercapacitor; nanocarbon based materials; single-wall carbon nanotubes
(SWCNTs); reduced graphene oxide (rGO)
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Jeong, H. T. (2015). Fabrication of stretchable and flexible
supercapacitor using nanocarbon based
materials. (Doctoral Dissertation). University of Wollongong. Retrieved from ; https://ro.uow.edu.au/theses/4410
Chicago Manual of Style (16th Edition):
Jeong, Hyeon Taek. “Fabrication of stretchable and flexible
supercapacitor using nanocarbon based
materials.” 2015. Doctoral Dissertation, University of Wollongong. Accessed January 23, 2021.
; https://ro.uow.edu.au/theses/4410.
MLA Handbook (7th Edition):
Jeong, Hyeon Taek. “Fabrication of stretchable and flexible
supercapacitor using nanocarbon based
materials.” 2015. Web. 23 Jan 2021.
Vancouver:
Jeong HT. Fabrication of stretchable and flexible
supercapacitor using nanocarbon based
materials. [Internet] [Doctoral dissertation]. University of Wollongong; 2015. [cited 2021 Jan 23].
Available from: ; https://ro.uow.edu.au/theses/4410.
Council of Science Editors:
Jeong HT. Fabrication of stretchable and flexible
supercapacitor using nanocarbon based
materials. [Doctoral Dissertation]. University of Wollongong; 2015. Available from: ; https://ro.uow.edu.au/theses/4410
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Open Access Theses and Dissertations
