subject:( Nanoparticle)

Oregon State University

1. Kim, Taehyeong. Organic-solvent resistant ultrafiltration and nanofiltration membrane modules for separation and purification of nanoparticles.

Degree: PhD, Chemistry, 2011, Oregon State University

URL: http://hdl.handle.net/1957/26135

► The intriguing size- and shape dependent properties of nanoparticles have garnered recent attention in many science and engineering areas. When the particle size is in… (more)

▼ The intriguing size- and shape dependent properties of nanoparticles have garnered recent attention in many science and engineering areas. When the particle size is in the nanometer size range, the material exhibits very different properties such as surface plasmon resonance (of gold nanoparticles) and superparamagnetism (of iron oxide nanoparticles). The size-dependent properties of quantum dots have made them useful as UV-Vis-NIR sensors and in telecommunications applications. However, the separation and purification of nanoparticles are still challenging due to their size, insolubility in many solvents, and irreversible adsorption to other materials. Membrane filtration is widely used to separate nano-sized biological materials such as proteins, viruses, DNA and RNA. This dissertation presents novel approaches to the use of ultrafiltration and nanofiltration membranes for nanoparticle separation and purification using dead-end and cross-flow filtration techniques. Purification of phosphine-stabilized Au₁₁ (Au₁₁(PPh₃)₈Cl₃, M.W. 4371, d[subscript core]=0.8 nm), produced in a microreactor without recrystallization, was achieved using nanofiltration membranes. The ceramic and polymer nanofiltration membranes were able to purify the Au₁₁ with rejection values higher than 90%. A novel continuous nanofiltration system design was applied and characterized. The continuous synthesis process, coupled with continuous nanofiltration, resulted in a significant reduction in synthesis time while producing higher yield than could be achieved in batch experiments. The diafiltration system was applied towards isolation of Au₁₁, and results were presented that indicate increased yield and enhanced product purity. Organic-solvent resistant nanofiltration and ultrafiltration membranes were applied for purification and size-based separation of lead sulfide nanoparticles and gold nanoparticles that were initially synthesized with a 2-8nm size distribution. The nanofiltration membranes achieved rejection values greater than 95% for each of the nanoparticle samples and retained most of the nanoparticles on the membranes. The nanofiltration membranes also exhibited high permeability, which translates to a reduced purification time. Ultrafiltration membranes were screened and successfully applied to the size fractionation of lead sulfide nanoparticles and gold nanoparticles. A templated silsesquioxane (ssq) membrane was synthesized within the pore space of an alumina support membrane and used for the separation and purification of nano-sized materials such as nanoparticles and macromolecules. The ssq membrane was fabricated by polycondensation of a silsesquioxane monomer solution in the presence of a surfactant within the macroporous space of an Anodisc alumina membrane (Whatman, CO. Ltd, Maidstone, UK). The novel ssq membranes were successfully applied for size exclusion separations of organic soluble 5-8 nm gold nanoparticles (protected with dodecanethiol). A ssq membrane also proved useful for the separation of biological… Advisors/Committee Members: Remcho, Vincent T. (advisor), Chang, Chih-hung (committee member).

Subjects/Keywords: Nanoparticle; Nanofiltration

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APA (6^th Edition):

Kim, T. (2011). Organic-solvent resistant ultrafiltration and nanofiltration membrane modules for separation and purification of nanoparticles. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/26135

Chicago Manual of Style (16^th Edition):

Kim, Taehyeong. “Organic-solvent resistant ultrafiltration and nanofiltration membrane modules for separation and purification of nanoparticles.” 2011. Doctoral Dissertation, Oregon State University. Accessed January 24, 2021. http://hdl.handle.net/1957/26135.

MLA Handbook (7^th Edition):

Kim, Taehyeong. “Organic-solvent resistant ultrafiltration and nanofiltration membrane modules for separation and purification of nanoparticles.” 2011. Web. 24 Jan 2021.

Vancouver:

Kim T. Organic-solvent resistant ultrafiltration and nanofiltration membrane modules for separation and purification of nanoparticles. [Internet] [Doctoral dissertation]. Oregon State University; 2011. [cited 2021 Jan 24]. Available from: http://hdl.handle.net/1957/26135.

Council of Science Editors:

Kim T. Organic-solvent resistant ultrafiltration and nanofiltration membrane modules for separation and purification of nanoparticles. [Doctoral Dissertation]. Oregon State University; 2011. Available from: http://hdl.handle.net/1957/26135

2. Peng, Sheng. Novel Monodisperse Nanoparticles: Synthesis, Characterizations, and Applications.

Degree: PhD, Chemistry, 2009, Brown University

URL: https://repository.library.brown.edu/studio/item/bdr:143/

► Monodisperse nanoparticles (NPs) below 20nm are of intense current interests, not only for the general miniaturization of the size, but also for their novel properties.… (more)

▼ Monodisperse nanoparticles (NPs) below 20nm are of intense current interests, not only for the general miniaturization of the size, but also for their novel properties. The magnetic properties of magnetic NPs are dramatically size-dependent when they get into nanoscale, and the transition of these NPs from ferromagnetic into superparamagnetic occurs within tens of nanometers. Recent advances in chemical synthesis have led to various monodisperse NPs with controlled size, shape, composition and crystallinity. In this dissertation, monodisperse NPs of magnetic Fe3O4, Fe, Co, FeCo and SmCo5, as well as noble metallic Au, Ag and AuAg NPs will be discussed. Monodisperse magnetic ferrite NPs, MFe2O4 (M = Fe, Co, Mn, etc) with controllable size of 5-20nm have been synthesized. The NPs are superparamagnetic with moderate magnetic moments up to 80emu/g at room temperature. Metallic iron (Fe) and cobalt (Co) NPs with high initial moments (>120emu/g) have been produced via thermolysis of organometallic precursors. However, due to the chemical instability, the NPs are quickly oxidized in air, leading to drastic moment drop and rapid aggregation. Crystalline iron oxide (Fe3O4) shell has been employed to protect the NPs. The resulted bimagnetic core/shell NPs prove to possess greatly enhanced chemical and magnetic stabilities. FeCo NPs were made by coating Co seeds with Fe followed by interfacial diffusions between the two components. The synthesis of hollow Fe3O4 NPs has been achieved by controlled oxidation of Fe NPs, utilizing Kirkendall diffusions. The crystallinity and the surface pores of the hollow NPs can be readily tuned by controlling the reaction temperature. Nanocrystalline SmCo-based hard magnets have been fabricated via solid state reduction of SmCoO-based NPs with calcium (Ca) granules. Hard magnetic properties have been revealed from the annealed products of SmCo5 or Sm2Co17. Monodisperse non-thiolated Au and Ag NPs have been prepared. The resulted Au NPs reveal high catalytic activity for carbon monoxide (CO) oxidation. AuAg alloy NPs have been made by interfacial diffusion of core/shell Ag/Au. Such NPs with promising properties are thus interesting for various bio-medical, magnetic and catalytic applications. Magnetic Fe3O4, Fe, Co, FeCo and hollow Fe3O4 NPs are promising for drug delivery, imaging and hyperthermia. Nanocrystalline SmCo is an excellent candidate of superior permanent magnets. Advisors/Committee Members: Sun, Shouheng (director), Sweigart, Dwight (reader), Kim, Eunsuk (reader).

Subjects/Keywords: Nanoparticle Synthesis

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APA (6^th Edition):

Peng, S. (2009). Novel Monodisperse Nanoparticles: Synthesis, Characterizations, and Applications. (Doctoral Dissertation). Brown University. Retrieved from https://repository.library.brown.edu/studio/item/bdr:143/

Chicago Manual of Style (16^th Edition):

Peng, Sheng. “Novel Monodisperse Nanoparticles: Synthesis, Characterizations, and Applications.” 2009. Doctoral Dissertation, Brown University. Accessed January 24, 2021. https://repository.library.brown.edu/studio/item/bdr:143/.

MLA Handbook (7^th Edition):

Peng, Sheng. “Novel Monodisperse Nanoparticles: Synthesis, Characterizations, and Applications.” 2009. Web. 24 Jan 2021.

Vancouver:

Peng S. Novel Monodisperse Nanoparticles: Synthesis, Characterizations, and Applications. [Internet] [Doctoral dissertation]. Brown University; 2009. [cited 2021 Jan 24]. Available from: https://repository.library.brown.edu/studio/item/bdr:143/.

Council of Science Editors:

Peng S. Novel Monodisperse Nanoparticles: Synthesis, Characterizations, and Applications. [Doctoral Dissertation]. Brown University; 2009. Available from: https://repository.library.brown.edu/studio/item/bdr:143/

Addis Ababa University

3. Minda, Lemma. SPIN DEPENDENT 2D ELECTRON SCATTERING BY NANOMAGNETS .

Degree: 2013, Addis Ababa University

URL: http://etd.aau.edu.et/dspace/handle/123456789/1342

► The fundamental concept of spintronics,the di erence between nanoparticle and the corresponding bulk material is presented. Mathematical expression of scattering amplitude is derived for 3D… (more)

Subjects/Keywords: nanoparticle; spintronics

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APA (6^th Edition):

Minda, L. (2013). SPIN DEPENDENT 2D ELECTRON SCATTERING BY NANOMAGNETS . (Thesis). Addis Ababa University. Retrieved from http://etd.aau.edu.et/dspace/handle/123456789/1342

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Minda, Lemma. “SPIN DEPENDENT 2D ELECTRON SCATTERING BY NANOMAGNETS .” 2013. Thesis, Addis Ababa University. Accessed January 24, 2021. http://etd.aau.edu.et/dspace/handle/123456789/1342.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Minda, Lemma. “SPIN DEPENDENT 2D ELECTRON SCATTERING BY NANOMAGNETS .” 2013. Web. 24 Jan 2021.

Vancouver:

Minda L. SPIN DEPENDENT 2D ELECTRON SCATTERING BY NANOMAGNETS . [Internet] [Thesis]. Addis Ababa University; 2013. [cited 2021 Jan 24]. Available from: http://etd.aau.edu.et/dspace/handle/123456789/1342.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Minda L. SPIN DEPENDENT 2D ELECTRON SCATTERING BY NANOMAGNETS . [Thesis]. Addis Ababa University; 2013. Available from: http://etd.aau.edu.et/dspace/handle/123456789/1342

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Rice University

4. Ma, Xintong. Melting of Phase Change Material Around a Heated Nanoparticle with Natural and Forced Convection.

Degree: MS, Nanoscale Heat Transfer, 2019, Rice University

URL: http://hdl.handle.net/1911/107751

► Phase change heat transfer has been an area of interest for decades due to its application in solar collectors, nuclear reactor cooling, buildings, vehicle engines,… (more)

Subjects/Keywords: Nanoparticle; PCM

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APA (6^th Edition):

Ma, X. (2019). Melting of Phase Change Material Around a Heated Nanoparticle with Natural and Forced Convection. (Masters Thesis). Rice University. Retrieved from http://hdl.handle.net/1911/107751

Chicago Manual of Style (16^th Edition):

Ma, Xintong. “Melting of Phase Change Material Around a Heated Nanoparticle with Natural and Forced Convection.” 2019. Masters Thesis, Rice University. Accessed January 24, 2021. http://hdl.handle.net/1911/107751.

MLA Handbook (7^th Edition):

Ma, Xintong. “Melting of Phase Change Material Around a Heated Nanoparticle with Natural and Forced Convection.” 2019. Web. 24 Jan 2021.

Vancouver:

Ma X. Melting of Phase Change Material Around a Heated Nanoparticle with Natural and Forced Convection. [Internet] [Masters thesis]. Rice University; 2019. [cited 2021 Jan 24]. Available from: http://hdl.handle.net/1911/107751.

Council of Science Editors:

Ma X. Melting of Phase Change Material Around a Heated Nanoparticle with Natural and Forced Convection. [Masters Thesis]. Rice University; 2019. Available from: http://hdl.handle.net/1911/107751

Cornell University

5. Tan, Junhao Shawn. Rational Design Of Dna As A Nanoscale Material.

Degree: PhD, Biomedical Engineering, 2013, Cornell University

URL: http://hdl.handle.net/1813/33880

► One of the fundamental challenges of nanoscience and nanotechnology today is to organize nanoparticles, now increasingly recognized as 'artificial atoms', into higher-ordered structures analogous to… (more)

▼ One of the fundamental challenges of nanoscience and nanotechnology today is to organize nanoparticles, now increasingly recognized as 'artificial atoms', into higher-ordered structures analogous to molecules, polymers, and crystals. Inorganic nanoparticles in particular have garnered significant interest for their unique size- and morphology-dependent properties in the nanoscale, much unlike bulk materials which typically possess constant physical properties. Furthermore, the collective properties of nanoparticle assemblies in well-defined spatial configurations and crystal lattices can result in a dramatically different electromagnetic coupling profile among nanoparticles as compared to those of materials in the bulk phase, isolated nanoparticles, and disordered nanoparticle assemblies. The potential for a new generation of designer materials and devices created from nanoparticle "atoms" spurred on developments in the nanoparticle assembly that included the rapid rise of DNA-based nanoparticle assembly. DNA has long been investigated as genetic material but has quickly emerged in the past decade as excellent "generic" polymer that can be potentially engineered to organize complex, functional systems through self-assembly. Aside from its high monodispersity and outstanding stability, DNA possess the unique advantage of programmability via Watson-Crick basepairing. In the last decade alone, DNA-based nanoparticle "molecules", "polymers" and "crystals" have been successfully demonstrated in a variety of formats, configurations and with different materials. In spite of the recent suc- cesses, there is still a tremendous lack of understanding on the nanoscale interactions that govern the assembly process, thus limiting the customizability, complexity, and utility of the final assembled product. The works discussed in this dissertation not only seek to challenge existing notions of DNA-based assembly but also to provide new insights into DNA-based nanoparticle assembly that could pave the way towards a blueprint for rational design of complex nanoparticle assemblies. In the following chapters, we explore how nanoparticles capped with linear DNA strands assemble into tunable crystals in various formats by rational control over DNA length, DNA sequence and ionic environment. In addition, we present how branched DNA can also be rationally designed to direct the assembly of nanoparticle molecules. Advisors/Committee Members: Luo, Dan (chair), Craighead, Harold G (committee member), Chu, Chih-Chang (committee member).

Subjects/Keywords: DNA-nanoparticle assembly; Plasmonic nanomaterials; Nanoparticle crystallization

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APA (6^th Edition):

Tan, J. S. (2013). Rational Design Of Dna As A Nanoscale Material. (Doctoral Dissertation). Cornell University. Retrieved from http://hdl.handle.net/1813/33880

Chicago Manual of Style (16^th Edition):

Tan, Junhao Shawn. “Rational Design Of Dna As A Nanoscale Material.” 2013. Doctoral Dissertation, Cornell University. Accessed January 24, 2021. http://hdl.handle.net/1813/33880.

MLA Handbook (7^th Edition):

Tan, Junhao Shawn. “Rational Design Of Dna As A Nanoscale Material.” 2013. Web. 24 Jan 2021.

Vancouver:

Tan JS. Rational Design Of Dna As A Nanoscale Material. [Internet] [Doctoral dissertation]. Cornell University; 2013. [cited 2021 Jan 24]. Available from: http://hdl.handle.net/1813/33880.

Council of Science Editors:

Tan JS. Rational Design Of Dna As A Nanoscale Material. [Doctoral Dissertation]. Cornell University; 2013. Available from: http://hdl.handle.net/1813/33880

Cornell University

6. Fernandes, Nikhil. Synthesis, Properties, And Applications Of Nanoparticle Ionic Materials.

Degree: PhD, Applied Physics, 2014, Cornell University

URL: http://hdl.handle.net/1813/36140

► Nanoparticle Ionic Materials are a novel materials platform consisting of a nanoparticle core and a organic, typically polymeric canopy bonded by an ionic bond. These… (more)

▼ Nanoparticle Ionic Materials are a novel materials platform consisting of a nanoparticle core and a organic, typically polymeric canopy bonded by an ionic bond. These systems are a subset of a growing field of single-component nanohybrids, where the organic and inorganic components of a nanocomposite material are bonded to form a single independent unit. This approach is necessary to overcome the ubiquitous mixing problem inherent in creating inorganic/organic hybrid materials at length scales greater than small molecules. In order to create the ionic bond, a typical strategy involves the functionalization of the core particle with an oligomer carrying an easily ionizable group, before reacting that with the canopy containing a complementary ionizable group. Part of the work presented here demonstrates an alternate synthesis for silica, extendable to other metal oxides, utilizing the inherent surface charge of the nanoparticle to create ionic materials without using complex chemistry. A major attraction of the nanoparticle ionic materials is their tunable mechanical properties. Several authors have reported properties ranging from soft glassy materials to Newtonian fluids, depending on composition. An exhaustive study of the dependence of mechanical and thermal properties as a function of composition has been undertaken, and phase map has been created to inform future synthesis by design endeavors in this field. Addtionally, the effect of using multifunctional polymers that can link nanoparticles together has been studied, and it has been shown that the resulting materials are stiffer with the addition of even a small fraction of crosslinking polymers. The ionic bond is shown to have a large effect on these properties by increasing the modulus dramatically. Additionally, these materials are shown to form self-healing elastomers, with the ability to be molded repeatedly, and then to recover their elastic strength in the new conformation, opening avenues to novel materials for applications such as coatings. Advisors/Committee Members: Giannelis, Emmanuel P (chair), Brock, Joel Donald (committee member), Hennig, Richard G. (committee member).

Subjects/Keywords: Nanoparticle hybrids; Nanoparticle Ionic Materials; Nanocomposites

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Fernandes, N. (2014). Synthesis, Properties, And Applications Of Nanoparticle Ionic Materials. (Doctoral Dissertation). Cornell University. Retrieved from http://hdl.handle.net/1813/36140

Chicago Manual of Style (16^th Edition):

Fernandes, Nikhil. “Synthesis, Properties, And Applications Of Nanoparticle Ionic Materials.” 2014. Doctoral Dissertation, Cornell University. Accessed January 24, 2021. http://hdl.handle.net/1813/36140.

MLA Handbook (7^th Edition):

Fernandes, Nikhil. “Synthesis, Properties, And Applications Of Nanoparticle Ionic Materials.” 2014. Web. 24 Jan 2021.

Vancouver:

Fernandes N. Synthesis, Properties, And Applications Of Nanoparticle Ionic Materials. [Internet] [Doctoral dissertation]. Cornell University; 2014. [cited 2021 Jan 24]. Available from: http://hdl.handle.net/1813/36140.

Council of Science Editors:

Fernandes N. Synthesis, Properties, And Applications Of Nanoparticle Ionic Materials. [Doctoral Dissertation]. Cornell University; 2014. Available from: http://hdl.handle.net/1813/36140

University of Manitoba

7. Wroczynskyj, Yaroslav. Determination of nanoparticle size and surface charge in suspension by an electroacoustic method.

Degree: Physics and Astronomy, 2015, University of Manitoba

URL: http://hdl.handle.net/1993/30167

► An apparatus intended to measure the pressure oscillations generated by nanoparticle suspensions in response to an AC electric field was designed and made operational. Electroacoustic… (more)

Subjects/Keywords: Nanoparticle surface properties; Nanoparticle surface characterization

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APA (6^th Edition):

Wroczynskyj, Y. (2015). Determination of nanoparticle size and surface charge in suspension by an electroacoustic method. (Masters Thesis). University of Manitoba. Retrieved from http://hdl.handle.net/1993/30167

Chicago Manual of Style (16^th Edition):

Wroczynskyj, Yaroslav. “Determination of nanoparticle size and surface charge in suspension by an electroacoustic method.” 2015. Masters Thesis, University of Manitoba. Accessed January 24, 2021. http://hdl.handle.net/1993/30167.

MLA Handbook (7^th Edition):

Wroczynskyj, Yaroslav. “Determination of nanoparticle size and surface charge in suspension by an electroacoustic method.” 2015. Web. 24 Jan 2021.

Vancouver:

Wroczynskyj Y. Determination of nanoparticle size and surface charge in suspension by an electroacoustic method. [Internet] [Masters thesis]. University of Manitoba; 2015. [cited 2021 Jan 24]. Available from: http://hdl.handle.net/1993/30167.

Council of Science Editors:

Wroczynskyj Y. Determination of nanoparticle size and surface charge in suspension by an electroacoustic method. [Masters Thesis]. University of Manitoba; 2015. Available from: http://hdl.handle.net/1993/30167

Carnegie Mellon University

8. Stegemeier, John Peter. Effects of Transformations of Ag and CuO Nanoparticles on Their Fate in Freshwater Wetland Sediments and Plants.

Degree: 2016, Carnegie Mellon University

URL: http://repository.cmu.edu/dissertations/714

► Engineered nanomaterials (ENMs) are increasing becoming incorporated into consumer products to imbue remarkable physical and chemical properties. The increased use of these ENMs leads to… (more)

▼ Engineered nanomaterials (ENMs) are increasing becoming incorporated into consumer products to imbue remarkable physical and chemical properties. The increased use of these ENMs leads to a growing need to understand the environmental fate of ENMs after release. Many ENMs, including Ag and Cu ENMs, have the potential to undergo complex physical and chemical transformations which impact their toxicity, solubility and fate in the environment. There is a lack of research characterizing the transformation rate and understanding how these transformations affect interactions with organisms and the ultimate environmental fate. The first objective of this thesis was to understand how transformations of Ag ENMs affect the uptake, distribution and speciation of these materials in plants. Terrestrial (alfalfa, Medicago sativa) and an aquatic (duckweed, Landoltia punctate) plant species were exposed hydroponically to as manufactured (“pristine”) Ag0-NPs and more environmentally relevant (“transformed”) Ag2S NPs. The uptake, spatial distribution and speciation of Ag were analyzed using synchrotron based X-ray Absorption Spectroscopy (XAS) techniques to provide mechanistic insights into the uptake of these ENMs. The reduced solubility and reactivity of Ag2S ENMs was expected to prevent plants from solubilizing these particles and only allow for direct uptake of particles. For the more soluble Ag species, the absorption of Ag+ ions was expected to be primarily the mechanism of Ag uptake. Although the total Ag associated with the plants was similar, the Ag distribution in the roots was dramatically different. The transformed ENMs (Ag2S) appeared to be taken into the plant tissue as sulfidized ENMs. The pristine Ag0 ENMs were found to partially dissolve and incorporate into the plant tissue as both dissolved Ag and Ag0-NPs. The fact that ENMs readily attach onto plant tissue regardless of speciation and solubility suggests that exposure to ENMs may be controlled by factors affecting attachment to root surfaces. However, internalization of Ag appears to be affected by solubility. The second objective was to characterize the impact of transformations of Ag and Cu-based ENMs on the distribution, speciation and fate of these materials in subaquatic sediments and the aquatic plant, E. Densa in a simulated emergent freshwater wetland using large-scale mesocosms. The exposure of pristine (Ag0 and CuO) ENMs and their transformed analogues (Ag2S and CuS) was compared to an ionic control (Cu(NO3)2) to determine if nanoparticulate species of metals were distributed differently than their dissolved counterparts. The metal speciation was determined using XAS to elucidate relative timescales of transformations. The pristine ENMs were expected to rapidly transform into their more stable sulfidized species and the uptake of Ag and Cu were expected to depend on the solubility of the ENMs. Transformations of the pristine ENMs were found to be rapid (weeks) in the surficial sediment, but slower (months) in the aquatic plant tissue. The uptake of ENMs…

Subjects/Keywords: environment; nanoparticle; transformation

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APA (6^th Edition):

Stegemeier, J. P. (2016). Effects of Transformations of Ag and CuO Nanoparticles on Their Fate in Freshwater Wetland Sediments and Plants. (Thesis). Carnegie Mellon University. Retrieved from http://repository.cmu.edu/dissertations/714

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Stegemeier, John Peter. “Effects of Transformations of Ag and CuO Nanoparticles on Their Fate in Freshwater Wetland Sediments and Plants.” 2016. Thesis, Carnegie Mellon University. Accessed January 24, 2021. http://repository.cmu.edu/dissertations/714.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Stegemeier, John Peter. “Effects of Transformations of Ag and CuO Nanoparticles on Their Fate in Freshwater Wetland Sediments and Plants.” 2016. Web. 24 Jan 2021.

Vancouver:

Stegemeier JP. Effects of Transformations of Ag and CuO Nanoparticles on Their Fate in Freshwater Wetland Sediments and Plants. [Internet] [Thesis]. Carnegie Mellon University; 2016. [cited 2021 Jan 24]. Available from: http://repository.cmu.edu/dissertations/714.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Stegemeier JP. Effects of Transformations of Ag and CuO Nanoparticles on Their Fate in Freshwater Wetland Sediments and Plants. [Thesis]. Carnegie Mellon University; 2016. Available from: http://repository.cmu.edu/dissertations/714

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Alberta

9. McClure, Sean. Polymer/Nanoparticle Nanocomposite Thin Films for Optoelectronics: Experiment and Theory.

Degree: PhD, Department of Chemistry, 2011, University of Alberta

URL: https://era.library.ualberta.ca/files/j9602216f

► Third-generation optoelectronics, which utilize nanoscale materials, have received a considerable amount of attention in the chemical sciences and are poised to make a large impact… (more)

▼ Third-generation optoelectronics, which utilize nanoscale materials, have received a considerable amount of attention in the chemical sciences and are poised to make a large impact in both fundamental research and real-world application. In order to make a contribution to the field, this thesis describes a route towards highly stable, water-soluble semiconductor nanorods and their incorporation into nanoparticle/polymer composite thin films. To characterize the photoelectrical properties of these multilayers, and to provide a proof-of-concept for a functional optoelectronic device, the films were integrated into an excitonic solar cell. To gain further insight into the physical properties of the thin films, computational modeling of the carrier transport in thiophenes was conducted, and the limits to device performance were described in the context of their charge transport characteristics. Electrostatic layer-by-layer (ELBL) assembly was used for the synthesis of multilayer nanorod/polymer composite films. CdSe nanorods (NRs) were synthesized and made cationic and water-soluble using ligand exchange chemistry. The NRs were partnered with anionic polymers including poly(sodium 4-styrenesulfonate) (PSS) and the two polythiophene-based photoactive polymers, sodium poly[2-(3-thienyl)-ethoxy-4-butylsulfonate (PTEBS) and poly[3-(potassium-6-hexanoate)thiophene-2,5-diyl] (P3KHT). Multilayer growth, with nanoscale control, is shown through UV-vis spectroscopy, cross-sectional scanning electron microscopy (SEM) and surface analytical techniques including atomic force microscopy (AFM). The formation of an intimate nanorod/conducting polymer bulk heterojunction is confirmed through cross-sectional SEM, transmission electron microscopy (TEM), and scanning Auger analysis. A series of photovoltaic devices was fabricated on ITO electrodes using CdSe NRs in combination with PTEBS or P3KHT. A thorough device analysis showed that performance was limited by carrier transport throughout the films. Computational modeling of the thiophene component in polymer-based third-generation devices was done using density functional theory (DFT) with core potentials added to account for long range dispersion interactions inherent to optoelectronic thin films. Binding energies and orbital splittings in dimers composed of monomers up to six rings were investigated. The combination of experimental and computational studies elucidates some of the underlying mechanisms behind the production of third-generation solar energy.

Subjects/Keywords: Nanoparticle; Solar; Optoelectronics

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APA (6^th Edition):

McClure, S. (2011). Polymer/Nanoparticle Nanocomposite Thin Films for Optoelectronics: Experiment and Theory. (Doctoral Dissertation). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/j9602216f

Chicago Manual of Style (16^th Edition):

McClure, Sean. “Polymer/Nanoparticle Nanocomposite Thin Films for Optoelectronics: Experiment and Theory.” 2011. Doctoral Dissertation, University of Alberta. Accessed January 24, 2021. https://era.library.ualberta.ca/files/j9602216f.

MLA Handbook (7^th Edition):

McClure, Sean. “Polymer/Nanoparticle Nanocomposite Thin Films for Optoelectronics: Experiment and Theory.” 2011. Web. 24 Jan 2021.

Vancouver:

McClure S. Polymer/Nanoparticle Nanocomposite Thin Films for Optoelectronics: Experiment and Theory. [Internet] [Doctoral dissertation]. University of Alberta; 2011. [cited 2021 Jan 24]. Available from: https://era.library.ualberta.ca/files/j9602216f.

Council of Science Editors:

McClure S. Polymer/Nanoparticle Nanocomposite Thin Films for Optoelectronics: Experiment and Theory. [Doctoral Dissertation]. University of Alberta; 2011. Available from: https://era.library.ualberta.ca/files/j9602216f

Penn State University

10. Chen, Niancao. Programmable Nanomaterials for Detoxification.

Degree: 2014, Penn State University

URL: https://submit-etda.libraries.psu.edu/catalog/23701

► Exogenous chemicals (e.g., drugs) and endogenous signaling molecules (e.g., growth factors) are important for the treatment of human diseases and the maintenance of a normal… (more)

▼ Exogenous chemicals (e.g., drugs) and endogenous signaling molecules (e.g., growth factors) are important for the treatment of human diseases and the maintenance of a normal metabolism in the body. However, they can cause severe or fatal toxicity problems when their concentrations in the body exceed certain ranges1–3. To mitigate their toxic effects on the body, a myriad of antidotes have been developed. Of them, nanoparticles (e.g., liposomes) have recently attracted the most attention because nanoparticles can act as a sink to sequester toxic molecules more efficiently 4,5. Despite their promise, most nanoparticles have relatively low affinity in sequestering target molecules and slow sequestration rates. Moreover, currently available nanoparticle antidotes cannot be actively regulated to control their capability of sequestering target molecules. As a result, when nanoparticles are applied to sequester endogenous signaling molecules, these molecules may be over eliminated, which can also cause severe effects or even fatality. Thus, it is important that nanoparticle antidotes provide molecularly controllable target sequestration, which has never been studied before. This dissertation research explores the concept of bidirectional molecular recognition control for the development of an open, programmable nanoscale antidote. This nanoscale antidote can not only sequester target molecules effectively and rapidly, but also release target molecules via molecular interactions on demand. To construct the antidote, DNA oligonucleotides were used as programmable building blocks and affinity ligands (i.e., nucleic acid aptamer) for the synthesis of both linear and branched affinity DNA polymers (DPs). A magnetic nanoparticle was used as a nanoscaffold to support the growth of the DPs on its surface. Each repeating unit of the DP has the capability of target sequestration. The sequestration functionality of this programmable nanoparticle antidote was evaluated by using both a small molecule drug and large molecule protein. This novel antidote was also examined by evaluating its capabilities in mitigating the biological effects of the drug and the protein. Moreover the reversing of target sequestration via molecular regulation was validated. This dissertation has four major chapters. In Chapter 1, current strategies for developing nanoparticle-based antidotes are systematically reviewed. In Chapter 2, the synthesis of affinity DNA polymer-functionalized nanoparticles is introduced. In Chapter 3, the functionalities of the programmable antidote for detoxification is demonstrated in vitro. In Chapter 4, the ability to program the function of the antidote via molecular regulation is validated. The data suggest that this antidote can sequester both small molecules and large proteins. Importantly, this antidote can be programmed via strand displacement to control the molecular sequestration. The success of this study has opened a new avenue for the development of antidotes for safe and effective detoxification of either… Advisors/Committee Members: Yong Wang, Dissertation Advisor/Co-Advisor, Yong Wang, Committee Chair/Co-Chair, Jian Yang, Committee Member, Christine Dolan Keating, Committee Member, Manish Kumar, Committee Member.

Subjects/Keywords: Aptamer; Nanoparticle; detoxification

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APA (6^th Edition):

Chen, N. (2014). Programmable Nanomaterials for Detoxification. (Thesis). Penn State University. Retrieved from https://submit-etda.libraries.psu.edu/catalog/23701

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Chen, Niancao. “Programmable Nanomaterials for Detoxification.” 2014. Thesis, Penn State University. Accessed January 24, 2021. https://submit-etda.libraries.psu.edu/catalog/23701.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Chen, Niancao. “Programmable Nanomaterials for Detoxification.” 2014. Web. 24 Jan 2021.

Vancouver:

Chen N. Programmable Nanomaterials for Detoxification. [Internet] [Thesis]. Penn State University; 2014. [cited 2021 Jan 24]. Available from: https://submit-etda.libraries.psu.edu/catalog/23701.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Chen N. Programmable Nanomaterials for Detoxification. [Thesis]. Penn State University; 2014. Available from: https://submit-etda.libraries.psu.edu/catalog/23701

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Newcastle

11. Darwis, Darmawati. Fabricating nanoparticulate organic thin film transistor (OTFT) and organic photovoltaic (OPV) devices using inkjet printing.

Degree: PhD, 2013, University of Newcastle

URL: http://hdl.handle.net/1959.13/1038771

►

Research Doctorate - Doctor of Philosophy (PhD)

This thesis presents a systematic study on two types of semiconducting polymer nanoparticulate suspensions prepared using: (1) a… (more)

Subjects/Keywords: nanoparticle; OTFT; OPV

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APA (6^th Edition):

Darwis, D. (2013). Fabricating nanoparticulate organic thin film transistor (OTFT) and organic photovoltaic (OPV) devices using inkjet printing. (Doctoral Dissertation). University of Newcastle. Retrieved from http://hdl.handle.net/1959.13/1038771

Chicago Manual of Style (16^th Edition):

Darwis, Darmawati. “Fabricating nanoparticulate organic thin film transistor (OTFT) and organic photovoltaic (OPV) devices using inkjet printing.” 2013. Doctoral Dissertation, University of Newcastle. Accessed January 24, 2021. http://hdl.handle.net/1959.13/1038771.

MLA Handbook (7^th Edition):

Darwis, Darmawati. “Fabricating nanoparticulate organic thin film transistor (OTFT) and organic photovoltaic (OPV) devices using inkjet printing.” 2013. Web. 24 Jan 2021.

Vancouver:

Darwis D. Fabricating nanoparticulate organic thin film transistor (OTFT) and organic photovoltaic (OPV) devices using inkjet printing. [Internet] [Doctoral dissertation]. University of Newcastle; 2013. [cited 2021 Jan 24]. Available from: http://hdl.handle.net/1959.13/1038771.

Council of Science Editors:

Darwis D. Fabricating nanoparticulate organic thin film transistor (OTFT) and organic photovoltaic (OPV) devices using inkjet printing. [Doctoral Dissertation]. University of Newcastle; 2013. Available from: http://hdl.handle.net/1959.13/1038771

Colorado State University

12. Bayram, Ercan. Investigations of the identity of the true catalyst in three systems, including the development of catalyst poisoning methodology.

Degree: PhD, Chemistry, 2012, Colorado State University

URL: http://hdl.handle.net/10217/68154

► Following brief reviews of the pertinent "who is the catalyst?" and "M4 (M= transition-metal) cluster catalysis" literature, the research presented herein is focused on the… (more)

▼ Following brief reviews of the pertinent "who is the catalyst?" and "M4 (M= transition-metal) cluster catalysis" literature, the research presented herein is focused on the investigations of the true catalyst for three different catalytic systems. The studies include: (i) the investigation of the true catalyst for neat benzene hydrogenation beginning with commercially available [Ir(cod)Cl]2 (cod= 1,5-cyclooctadiene) at 22 °C and 40 psig initial H2 pressure; (ii) the investigation of the true catalyst for benzene hydrogenation beginning with commercially available [RhCp*Cl2]2 (Cp*= pentamethylcyclopentadienyl) at 100 °C and 50 atm (740 psig) initial H2 pressure; and (iii) the investigation of the true catalyst for cyclohexene hydrogenation beginning with the well-characterized, site isolated [Ir(C2H4)2]/zeolite-Y complex at 22 °C and 40 psig initial H2 pressure, studies done collaboratively with Professor Bruce C. Gates and his group at the University of California-Davis. All three investigations aimed at identifying the true catalyst were studied via an arsenal of complimentary techniques including kinetics, in operando and post-catalysis X-ray absorption fine structure (XAFS) spectroscopy, kinetic quantitative poisoning experiments, transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and high-angle annular dark-field scanning electron microscopy (HAADF-STEM). The data obtained for each system presented herein provide compelling evidence that the proposed species in each chapter are the true catalyst of the given system, specifically (and respectively) for (i), (ii), and (iii) above Ir(0)n nanoparticles and aggregates, Rh4 sub-nanometer clusters, and atomically dispersed, mononuclear Ir1/zeolite Y catalysts. The results emphasize the need to use complimentary, multiple methods in order to correctly identify the true catalyst in such catalytic systems. The final study elucidates kinetic quantitative catalyst poisoning via two model catalysts: Rh(0)n nanoparticles and Rh4 clusters, providing detailed analyses of linear as well as non-linear kinetic quantitative poisoning plots. The resulting quantitative kinetic catalyst poisoning studies of Rh(0)n nanoparticles and Rh4 clusters led to estimates of the equivalents of poison bound, quantitative catalyst poisoning association constants, and the numbers of active sites for each catalyst. Advisors/Committee Members: Finke, Richard G. (advisor), Chen, Eugene Y.-X. (committee member), Prieto, Amy L. (committee member), Bernstein, Elliot R. (committee member), Dandy, David S. (committee member).

Subjects/Keywords: nanoparticle; cluster; catalysis

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APA (6^th Edition):

Bayram, E. (2012). Investigations of the identity of the true catalyst in three systems, including the development of catalyst poisoning methodology. (Doctoral Dissertation). Colorado State University. Retrieved from http://hdl.handle.net/10217/68154

Chicago Manual of Style (16^th Edition):

Bayram, Ercan. “Investigations of the identity of the true catalyst in three systems, including the development of catalyst poisoning methodology.” 2012. Doctoral Dissertation, Colorado State University. Accessed January 24, 2021. http://hdl.handle.net/10217/68154.

MLA Handbook (7^th Edition):

Bayram, Ercan. “Investigations of the identity of the true catalyst in three systems, including the development of catalyst poisoning methodology.” 2012. Web. 24 Jan 2021.

Vancouver:

Bayram E. Investigations of the identity of the true catalyst in three systems, including the development of catalyst poisoning methodology. [Internet] [Doctoral dissertation]. Colorado State University; 2012. [cited 2021 Jan 24]. Available from: http://hdl.handle.net/10217/68154.

Council of Science Editors:

Bayram E. Investigations of the identity of the true catalyst in three systems, including the development of catalyst poisoning methodology. [Doctoral Dissertation]. Colorado State University; 2012. Available from: http://hdl.handle.net/10217/68154

Baylor University

13. Watkins, Preston S., 1990-. Quantification of titanium dioxide nanoparticles in environmental matricies.

Degree: MS, Baylor University. Dept. of Environmental Science., 2016, Baylor University

URL: http://hdl.handle.net/2104/9913

► A consistent analytical method incorporating sulfuric acid (H₂SO₄) digestion and ICP-MS quantification for titanium dioxide (TiO₂) was validated for 4 environmentally relevant matrices. The method… (more)

Subjects/Keywords: Nanoparticle. Titanium dioxide.

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APA (6^th Edition):

Watkins, Preston S., 1. (2016). Quantification of titanium dioxide nanoparticles in environmental matricies. (Masters Thesis). Baylor University. Retrieved from http://hdl.handle.net/2104/9913

Chicago Manual of Style (16^th Edition):

Watkins, Preston S., 1990-. “Quantification of titanium dioxide nanoparticles in environmental matricies.” 2016. Masters Thesis, Baylor University. Accessed January 24, 2021. http://hdl.handle.net/2104/9913.

MLA Handbook (7^th Edition):

Watkins, Preston S., 1990-. “Quantification of titanium dioxide nanoparticles in environmental matricies.” 2016. Web. 24 Jan 2021.

Vancouver:

Watkins, Preston S. 1. Quantification of titanium dioxide nanoparticles in environmental matricies. [Internet] [Masters thesis]. Baylor University; 2016. [cited 2021 Jan 24]. Available from: http://hdl.handle.net/2104/9913.

Council of Science Editors:

Watkins, Preston S. 1. Quantification of titanium dioxide nanoparticles in environmental matricies. [Masters Thesis]. Baylor University; 2016. Available from: http://hdl.handle.net/2104/9913

Colorado State University

14. Martucci, Mary B. Part 1: Synthesis and characterization of magnetic Cr5Te8 nanoparticles. Part 2: Local atomic structure studies using theory to simulate polarons in superconducting cuprates and experiment to analyze alternative energy nanomaterials: Synthesis and characterization of magnetic Cr5Te8 nanoparticles: Local atomic structure studies using theory to simulate polarons in superconducting cuprates and experiment to analyze alternative energy nanomaterials.

Degree: PhD, Chemistry, 2012, Colorado State University

URL: http://hdl.handle.net/10217/67565

► The field of spintronics, the development of spin-based devices that utilize the spin degree of freedom to increase memory capacity, has emerged as a solution… (more)

Subjects/Keywords: local structure; nanoparticle

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APA (6^th Edition):

Martucci, M. B. (2012). Part 1: Synthesis and characterization of magnetic Cr5Te8 nanoparticles. Part 2: Local atomic structure studies using theory to simulate polarons in superconducting cuprates and experiment to analyze alternative energy nanomaterials: Synthesis and characterization of magnetic Cr5Te8 nanoparticles: Local atomic structure studies using theory to simulate polarons in superconducting cuprates and experiment to analyze alternative energy nanomaterials. (Doctoral Dissertation). Colorado State University. Retrieved from http://hdl.handle.net/10217/67565

Chicago Manual of Style (16^th Edition):

Martucci, Mary B. “Part 1: Synthesis and characterization of magnetic Cr5Te8 nanoparticles. Part 2: Local atomic structure studies using theory to simulate polarons in superconducting cuprates and experiment to analyze alternative energy nanomaterials: Synthesis and characterization of magnetic Cr5Te8 nanoparticles: Local atomic structure studies using theory to simulate polarons in superconducting cuprates and experiment to analyze alternative energy nanomaterials.” 2012. Doctoral Dissertation, Colorado State University. Accessed January 24, 2021. http://hdl.handle.net/10217/67565.

MLA Handbook (7^th Edition):

Martucci, Mary B. “Part 1: Synthesis and characterization of magnetic Cr5Te8 nanoparticles. Part 2: Local atomic structure studies using theory to simulate polarons in superconducting cuprates and experiment to analyze alternative energy nanomaterials: Synthesis and characterization of magnetic Cr5Te8 nanoparticles: Local atomic structure studies using theory to simulate polarons in superconducting cuprates and experiment to analyze alternative energy nanomaterials.” 2012. Web. 24 Jan 2021.

Vancouver:

Martucci MB. Part 1: Synthesis and characterization of magnetic Cr5Te8 nanoparticles. Part 2: Local atomic structure studies using theory to simulate polarons in superconducting cuprates and experiment to analyze alternative energy nanomaterials: Synthesis and characterization of magnetic Cr5Te8 nanoparticles: Local atomic structure studies using theory to simulate polarons in superconducting cuprates and experiment to analyze alternative energy nanomaterials. [Internet] [Doctoral dissertation]. Colorado State University; 2012. [cited 2021 Jan 24]. Available from: http://hdl.handle.net/10217/67565.

Council of Science Editors:

Martucci MB. Part 1: Synthesis and characterization of magnetic Cr5Te8 nanoparticles. Part 2: Local atomic structure studies using theory to simulate polarons in superconducting cuprates and experiment to analyze alternative energy nanomaterials: Synthesis and characterization of magnetic Cr5Te8 nanoparticles: Local atomic structure studies using theory to simulate polarons in superconducting cuprates and experiment to analyze alternative energy nanomaterials. [Doctoral Dissertation]. Colorado State University; 2012. Available from: http://hdl.handle.net/10217/67565

University of Cambridge

15. Carnegie, Cloudy. Plasmonic sensing via surface-enhanced spectroscopies.

Degree: PhD, 2019, University of Cambridge

URL: https://doi.org/10.17863/CAM.45915 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.792986

► The research reported in this thesis focuses on the high field localisation formed in the nanometric gaps between gold nanoparticles. Sub-wavelength sized nanoparticles irradiated with… (more)

▼ The research reported in this thesis focuses on the high field localisation formed in the nanometric gaps between gold nanoparticles. Sub-wavelength sized nanoparticles irradiated with light support electron oscillations known as plasmons, and coupling of plasmons between adjacent nanoparticles leads to hot-spots of high field enhancements in the gaps between them. The scattering processes of molecules placed in these gaps is drastically enhanced by the hot-spot, a technique utilised in surface-enhanced Raman spectroscopy (SERS). This thesis focuses on the optimisation of the SERS signals from these gaps. What is the limiting volume we can observe and what does this tell us about molecular interactions on the single-atom scale? Two types of nanostructure are utilised in this thesis for formation of nanometric gaps: long chain nano-aggregates and single junction nanoparticle-on-mirror structures. The first part of this thesis explores the use of nano-aggregates for plasmonic sensing via SERS. A key parameter to control is the gap distance between adjacent nanoparticles. Here the barrel-shaped cucubit[n]uril macromolecules are utilised. I show how nano-aggregates formed with CB[n] spacer molecules can be used for robust drug sensing of synthetic cannabi- noids down to the nanomolar regime through use of reliable gap distances in conjunction with principal component analysis (PCA) algorithms. I also show how depositing aggregates onto a substrate can effect both the inelastic and elastic scattering, through mapping the signals across a 12 × 12 μm area, demonstrating that although placing aggregates on a gold substrate can enhance the recorded signals, it is the inter-nanoparticle hotspots which dominate the signal. In the second part of this thesis I look at the subtleties of metal-molecule dynamics at single junctions formed in the nanoparticle-on-mirror (NPoM) construct. The nanoparticle- on-mirror construct comprises of a single nanoparticle spaced above a flat gold film by a molecular spacer layer. Here the spacer layers are self-assembled monolayers (SAMs) which form a robust coverage of the metal film. I show that 'picocavities (atomic protrusions from the gold surface) can be observed and studied at room temperature. A key finding is the discovery and characterisation of new 'flare modes' which are millisecond increases in light intensity, shown to likely come from regions of reduced local plasma frequency, indicative of a nanoparticle grain boundary.

Subjects/Keywords: plasmonics; sensing; nanoparticle

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Carnegie, C. (2019). Plasmonic sensing via surface-enhanced spectroscopies. (Doctoral Dissertation). University of Cambridge. Retrieved from https://doi.org/10.17863/CAM.45915 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.792986

Chicago Manual of Style (16^th Edition):

Carnegie, Cloudy. “Plasmonic sensing via surface-enhanced spectroscopies.” 2019. Doctoral Dissertation, University of Cambridge. Accessed January 24, 2021. https://doi.org/10.17863/CAM.45915 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.792986.

MLA Handbook (7^th Edition):

Carnegie, Cloudy. “Plasmonic sensing via surface-enhanced spectroscopies.” 2019. Web. 24 Jan 2021.

Vancouver:

Carnegie C. Plasmonic sensing via surface-enhanced spectroscopies. [Internet] [Doctoral dissertation]. University of Cambridge; 2019. [cited 2021 Jan 24]. Available from: https://doi.org/10.17863/CAM.45915 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.792986.

Council of Science Editors:

Carnegie C. Plasmonic sensing via surface-enhanced spectroscopies. [Doctoral Dissertation]. University of Cambridge; 2019. Available from: https://doi.org/10.17863/CAM.45915 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.792986

16. Carnegie, Cloudy. Plasmonic Sensing via Surface-Enhanced Spectroscopies.

Degree: PhD, 2019, University of Cambridge

URL: https://www.repository.cam.ac.uk/handle/1810/298860

► The research reported in this thesis focuses on the high field localisation formed in the nanometric gaps between gold nanoparticles. Sub-wavelength sized nanoparticles irradiated with… (more)

▼ The research reported in this thesis focuses on the high field localisation formed in the nanometric gaps between gold nanoparticles. Sub-wavelength sized nanoparticles irradiated with light support electron oscillations known as plasmons, and coupling of plasmons between adjacent nanoparticles leads to hot-spots of high field enhancements in the gaps between them. The scattering processes of molecules placed in these gaps is drastically enhanced by the hot-spot, a technique utilised in surface-enhanced Raman spectroscopy (SERS). This thesis focuses on the optimisation of the SERS signals from these gaps. What is the limiting volume we can observe and what does this tell us about molecular interactions on the single-atom scale? Two types of nanostructure are utilised in this thesis for formation of nanometric gaps: long chain nano-aggregates and single junction nanoparticle-on-mirror structures. The first part of this thesis explores the use of nano-aggregates for plasmonic sensing via SERS. A key parameter to control is the gap distance between adjacent nanoparticles. Here the barrel-shaped cucubit[n]uril macromolecules are utilised. I show how nano-aggregates formed with CB[n] spacer molecules can be used for robust drug sensing of synthetic cannabi- noids down to the nanomolar regime through use of reliable gap distances in conjunction with principal component analysis (PCA) algorithms. I also show how depositing aggregates onto a substrate can effect both the inelastic and elastic scattering, through mapping the signals across a 12 × 12 μm area, demonstrating that although placing aggregates on a gold substrate can enhance the recorded signals, it is the inter-nanoparticle hotspots which dominate the signal. In the second part of this thesis I look at the subtleties of metal-molecule dynamics at single junctions formed in the nanoparticle-on-mirror (NPoM) construct. The nanoparticle- on-mirror construct comprises of a single nanoparticle spaced above a flat gold film by a molecular spacer layer. Here the spacer layers are self-assembled monolayers (SAMs) which form a robust coverage of the metal film. I show that ‘picocavities (atomic protrusions from the gold surface) can be observed and studied at room temperature. A key finding is the discovery and characterisation of new ‘flare modes’ which are millisecond increases in light intensity, shown to likely come from regions of reduced local plasma frequency, indicative of a nanoparticle grain boundary.

Subjects/Keywords: plasmonics; sensing; nanoparticle

10 more images…

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APA (6^th Edition):

Carnegie, C. (2019). Plasmonic Sensing via Surface-Enhanced Spectroscopies. (Doctoral Dissertation). University of Cambridge. Retrieved from https://www.repository.cam.ac.uk/handle/1810/298860

Chicago Manual of Style (16^th Edition):

Carnegie, Cloudy. “Plasmonic Sensing via Surface-Enhanced Spectroscopies.” 2019. Doctoral Dissertation, University of Cambridge. Accessed January 24, 2021. https://www.repository.cam.ac.uk/handle/1810/298860.

MLA Handbook (7^th Edition):

Carnegie, Cloudy. “Plasmonic Sensing via Surface-Enhanced Spectroscopies.” 2019. Web. 24 Jan 2021.

Vancouver:

Carnegie C. Plasmonic Sensing via Surface-Enhanced Spectroscopies. [Internet] [Doctoral dissertation]. University of Cambridge; 2019. [cited 2021 Jan 24]. Available from: https://www.repository.cam.ac.uk/handle/1810/298860.

Council of Science Editors:

Carnegie C. Plasmonic Sensing via Surface-Enhanced Spectroscopies. [Doctoral Dissertation]. University of Cambridge; 2019. Available from: https://www.repository.cam.ac.uk/handle/1810/298860

Georgia Tech

17. Jiang, Wenchao. Spin dependent transport in ferromagnetic particles.

Degree: PhD, Physics, 2014, Georgia Tech

URL: http://hdl.handle.net/1853/52204

► Spintronics is an emerging technology that arises from the interplay between spin of the charge carrier and the magnetic property of the materials. The miniaturization… (more)

Subjects/Keywords: Electron transport; Nanoparticle

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APA (6^th Edition):

Jiang, W. (2014). Spin dependent transport in ferromagnetic particles. (Doctoral Dissertation). Georgia Tech. Retrieved from http://hdl.handle.net/1853/52204

Chicago Manual of Style (16^th Edition):

Jiang, Wenchao. “Spin dependent transport in ferromagnetic particles.” 2014. Doctoral Dissertation, Georgia Tech. Accessed January 24, 2021. http://hdl.handle.net/1853/52204.

MLA Handbook (7^th Edition):

Jiang, Wenchao. “Spin dependent transport in ferromagnetic particles.” 2014. Web. 24 Jan 2021.

Vancouver:

Jiang W. Spin dependent transport in ferromagnetic particles. [Internet] [Doctoral dissertation]. Georgia Tech; 2014. [cited 2021 Jan 24]. Available from: http://hdl.handle.net/1853/52204.

Council of Science Editors:

Jiang W. Spin dependent transport in ferromagnetic particles. [Doctoral Dissertation]. Georgia Tech; 2014. Available from: http://hdl.handle.net/1853/52204

University of North Texas

18. Blake, Deanne Renee. Effects of Layer Double Hydroxide Nanoclays on the Toxicity of Copper to Daphnia Magna.

Degree: 2012, University of North Texas

URL: https://digital.library.unt.edu/ark:/67531/metadc115048/

► Nanoparticles may affect secondary pollutants such as copper. Layer Double Hydroxides (LDH) are synthetically produced nanoparticles that adsorb copper via cation exchange. Pretreatment of copper… (more)

Subjects/Keywords: Nanoclays; nanoparticle; daphnia

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APA (6^th Edition):

Blake, D. R. (2012). Effects of Layer Double Hydroxide Nanoclays on the Toxicity of Copper to Daphnia Magna. (Thesis). University of North Texas. Retrieved from https://digital.library.unt.edu/ark:/67531/metadc115048/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Blake, Deanne Renee. “Effects of Layer Double Hydroxide Nanoclays on the Toxicity of Copper to Daphnia Magna.” 2012. Thesis, University of North Texas. Accessed January 24, 2021. https://digital.library.unt.edu/ark:/67531/metadc115048/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Blake, Deanne Renee. “Effects of Layer Double Hydroxide Nanoclays on the Toxicity of Copper to Daphnia Magna.” 2012. Web. 24 Jan 2021.

Vancouver:

Blake DR. Effects of Layer Double Hydroxide Nanoclays on the Toxicity of Copper to Daphnia Magna. [Internet] [Thesis]. University of North Texas; 2012. [cited 2021 Jan 24]. Available from: https://digital.library.unt.edu/ark:/67531/metadc115048/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Blake DR. Effects of Layer Double Hydroxide Nanoclays on the Toxicity of Copper to Daphnia Magna. [Thesis]. University of North Texas; 2012. Available from: https://digital.library.unt.edu/ark:/67531/metadc115048/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Virginia Tech

19. Tiwari, Andrea Jean. Aerosolization and Atmospheric Transformation of Engineered Nanoparticles.

Degree: PhD, Civil Engineering, 2014, Virginia Tech

URL: http://hdl.handle.net/10919/56664

► While research on the environmental impacts of engineered nanoparticles (ENPs) is growing, the potential for them to be chemically transformed in the atmosphere has been… (more)

▼ While research on the environmental impacts of engineered nanoparticles (ENPs) is growing, the potential for them to be chemically transformed in the atmosphere has been largely ignored. The overall objective of this work was to assess the atmospheric transformation of carbonaceous nanoparticles (CNPs). The research focuses on C₆₀ fullerene because it is an important member of the carbonaceous nanoparticle (CNP) family and is used in a wide variety of applications. The first specific objective was to review the potential of atmospheric transformations to alter the environmental impacts of CNPs. We described atmospheric processes that were likely to physically or chemically alter aerosolized CNPs and demonstrated their relevance to CNP behavior and toxicity in the aqueous and terrestrial environment. In order to investigate the transformations of CNP aerosols under controlled conditions, we developed an aerosolization technique that produces nano-scale aerosols without using solvents, which can alter the surface chemistry of the aerosols. We demonstrated the technique with carbonaceous (C₆₀) and metal oxide (TiO₂, CeO₂) nanoparticle powders. All resulting aerosols exhibited unimodal size distributions and mode particle diameters below 100 nm. We used the new aerosolization technique to investigate the reaction between aerosolized C₆₀ and atmospherically realistic levels of ozone (O₃) in terms of reaction products, reaction rate, and oxidative stress potential. We identified C₆₀O, C₆₀O2, and C₆₀O3 as products of the C₆₀-O3 reaction. We demonstrated that the oxidative stress potential of C₆₀ may be enhanced by exposure to O3. We found the pseudo-first order reaction rate to be 9 x 10⁻⁶ to 2 x 10⁻⁵ s⁻¹, which is several orders of magnitude lower than the rate for several PAH species under comparable conditions. This research has demonstrated that a thorough understanding of atmospheric chemistry of ENPs is critical for accurate prediction of their environmental impacts. It has also enabled future research in that vein by developing a novel technique to produce nanoscale aerosols from nanoparticle powders. Results of this research will help guide the formulation of appropriate environmental policy concerning the regulation of ENPs. Advisors/Committee Members: Marr, Linsey C. (committeechair), Vikesland, Peter J. (committee member), Hochella, Michael F. Jr. (committee member), Morris, John R. (committee member).

Subjects/Keywords: Aerosol; nanoparticle; atmosphere

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APA (6^th Edition):

Tiwari, A. J. (2014). Aerosolization and Atmospheric Transformation of Engineered Nanoparticles. (Doctoral Dissertation). Virginia Tech. Retrieved from http://hdl.handle.net/10919/56664

Chicago Manual of Style (16^th Edition):

Tiwari, Andrea Jean. “Aerosolization and Atmospheric Transformation of Engineered Nanoparticles.” 2014. Doctoral Dissertation, Virginia Tech. Accessed January 24, 2021. http://hdl.handle.net/10919/56664.

MLA Handbook (7^th Edition):

Tiwari, Andrea Jean. “Aerosolization and Atmospheric Transformation of Engineered Nanoparticles.” 2014. Web. 24 Jan 2021.

Vancouver:

Tiwari AJ. Aerosolization and Atmospheric Transformation of Engineered Nanoparticles. [Internet] [Doctoral dissertation]. Virginia Tech; 2014. [cited 2021 Jan 24]. Available from: http://hdl.handle.net/10919/56664.

Council of Science Editors:

Tiwari AJ. Aerosolization and Atmospheric Transformation of Engineered Nanoparticles. [Doctoral Dissertation]. Virginia Tech; 2014. Available from: http://hdl.handle.net/10919/56664

University of New South Wales

20. Yang, Xiaohong. Synthesis of titanium oxide hybrid nanostructures for photocatalysis applications.

Degree: Centre for Computer Simulation & Modelling of Particulate Systems, 2014, University of New South Wales

URL: http://handle.unsw.edu.au/1959.4/53547 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:12242/SOURCE02?view=true

► Titanium dioxide (TiO2) nanoparticles have exhibited excellent properties and applications in many fields of clean energy, environment protection and biotechnology. This thesis aims to study… (more)

Subjects/Keywords: TiO2 nanoparticle; Photocatalyst

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APA (6^th Edition):

Yang, X. (2014). Synthesis of titanium oxide hybrid nanostructures for photocatalysis applications. (Doctoral Dissertation). University of New South Wales. Retrieved from http://handle.unsw.edu.au/1959.4/53547 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:12242/SOURCE02?view=true

Chicago Manual of Style (16^th Edition):

Yang, Xiaohong. “Synthesis of titanium oxide hybrid nanostructures for photocatalysis applications.” 2014. Doctoral Dissertation, University of New South Wales. Accessed January 24, 2021. http://handle.unsw.edu.au/1959.4/53547 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:12242/SOURCE02?view=true.

MLA Handbook (7^th Edition):

Yang, Xiaohong. “Synthesis of titanium oxide hybrid nanostructures for photocatalysis applications.” 2014. Web. 24 Jan 2021.

Vancouver:

Yang X. Synthesis of titanium oxide hybrid nanostructures for photocatalysis applications. [Internet] [Doctoral dissertation]. University of New South Wales; 2014. [cited 2021 Jan 24]. Available from: http://handle.unsw.edu.au/1959.4/53547 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:12242/SOURCE02?view=true.

Council of Science Editors:

Yang X. Synthesis of titanium oxide hybrid nanostructures for photocatalysis applications. [Doctoral Dissertation]. University of New South Wales; 2014. Available from: http://handle.unsw.edu.au/1959.4/53547 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:12242/SOURCE02?view=true

University of Texas – Austin

21. Myers, Vera Sue. Characterization of dendrimer encapsulated nanoparticles by extended x-ray absorption fine structure and electrochemical methods.

Degree: PhD, Chemistry, 2011, University of Texas – Austin

URL: http://hdl.handle.net/2152/20660

► The small size regime and bulky hydrocarbon exterior of dendrimer encapsulated nanoparticles (DENs) often make characterization of these materials a unique challenge. Here, I report… (more)

Subjects/Keywords: Nanoparticle; Dendrimer; EXAFS

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APA (6^th Edition):

Myers, V. S. (2011). Characterization of dendrimer encapsulated nanoparticles by extended x-ray absorption fine structure and electrochemical methods. (Doctoral Dissertation). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/20660

Chicago Manual of Style (16^th Edition):

Myers, Vera Sue. “Characterization of dendrimer encapsulated nanoparticles by extended x-ray absorption fine structure and electrochemical methods.” 2011. Doctoral Dissertation, University of Texas – Austin. Accessed January 24, 2021. http://hdl.handle.net/2152/20660.

MLA Handbook (7^th Edition):

Myers, Vera Sue. “Characterization of dendrimer encapsulated nanoparticles by extended x-ray absorption fine structure and electrochemical methods.” 2011. Web. 24 Jan 2021.

Vancouver:

Myers VS. Characterization of dendrimer encapsulated nanoparticles by extended x-ray absorption fine structure and electrochemical methods. [Internet] [Doctoral dissertation]. University of Texas – Austin; 2011. [cited 2021 Jan 24]. Available from: http://hdl.handle.net/2152/20660.

Council of Science Editors:

Myers VS. Characterization of dendrimer encapsulated nanoparticles by extended x-ray absorption fine structure and electrochemical methods. [Doctoral Dissertation]. University of Texas – Austin; 2011. Available from: http://hdl.handle.net/2152/20660

University of Texas – Austin

22. Salas Porras, Ricardo Federico. Compressibility of nanoparticle stabilized foams for foamed cement applications.

Degree: MSin Engineering, Petroleum Engineering, 2014, University of Texas – Austin

URL: http://hdl.handle.net/2152/28289

► Foamed cement is widely used in the oil and gas industry to provide zonal isolation. Foamed cement provides various advantages vs. pure cement. The primary… (more)

▼ Foamed cement is widely used in the oil and gas industry to provide zonal isolation. Foamed cement provides various advantages vs. pure cement. The primary purpose of foamed cement is to reduce the density of the cement mixture. Consequently, foamed cement can be used in weak formations were reduced exerted hydrostatic pressure is needed to prevent/control cement circulation loss into the formation. However, Due to gas compressibility, foamed cement’s gas injection rate has to be constantly adjusted in order to create a constant density slurry through the height of the cement column. Furthermore, foamed cement’s properties include higher ductility, constant pressure exertion to the formation during cement transition time (gelling) and lower thermal conductivity. The ability of solid silica nanoparticles to generate stable gas/water foams was researched for foamed cement applications. Solid nanoparticles have been shown to permanently stabilize foams by assembling into layers at the gas/water interface. A potential decrease in compressibility of the gas phase by the presence of these armoring bubble layers was investigated. Enhancement of cement’s splitting tensile strength and compressive strength by silica nanoparticles was also investigated. The addition of uncoated silica nanoparticles at various concentrations did not appear to enhance neither cement’s splitting tensile or compressive strength. In most tests with varying silica nanoparticles concentrations, the samples with nanoparticles exhibited a slightly reduced splitting tensile and compressive strength. The exception being the compressive strength of the samples mixed with the highest nanoparticle concentration tested. However, the strength improvement was small vs. its pure cement counterpart. An apparatus to test the compressibility of nanoparticle stabilized foams was built for this research. The functionality of the apparatus was validated using various test fluids. The validation process allowed for the establishment of a compressibility benchmark to compare the compressibility of nanoparticle stabilized foams. A vital conclusion of this process was that generating the particle stabilized foams under pressure would allow for greater discernment between the existence of the armored bubble effect and gas dissolution into the water phase. A type of nanoparticle was identified as having the capacity to generate long term stable foams without the need of surfactant. Partially hydrophobic surface treated silica nanoparticles were utilized to generate gas/water foams under pressure and subsequently their compressibility was measured. The compressibility of these foams did not appear to show the armored bubble effect behaving as an equivalent ideal gas + water mixture. An additional surfactant and particle stabilized foam recipe was tested and displayed the same results. It was concluded that either the particle layers were not fully forming in the foam or in the case they were forming; either foam geometry was not conductive to the distribution of forces or… Advisors/Committee Members: Bryant, Steven L. (advisor), Bommer, Paul Michael (advisor).

Subjects/Keywords: Cement; Nanoparticle; Foam

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APA (6^th Edition):

Salas Porras, R. F. (2014). Compressibility of nanoparticle stabilized foams for foamed cement applications. (Masters Thesis). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/28289

Chicago Manual of Style (16^th Edition):

Salas Porras, Ricardo Federico. “Compressibility of nanoparticle stabilized foams for foamed cement applications.” 2014. Masters Thesis, University of Texas – Austin. Accessed January 24, 2021. http://hdl.handle.net/2152/28289.

MLA Handbook (7^th Edition):

Salas Porras, Ricardo Federico. “Compressibility of nanoparticle stabilized foams for foamed cement applications.” 2014. Web. 24 Jan 2021.

Vancouver:

Salas Porras RF. Compressibility of nanoparticle stabilized foams for foamed cement applications. [Internet] [Masters thesis]. University of Texas – Austin; 2014. [cited 2021 Jan 24]. Available from: http://hdl.handle.net/2152/28289.

Council of Science Editors:

Salas Porras RF. Compressibility of nanoparticle stabilized foams for foamed cement applications. [Masters Thesis]. University of Texas – Austin; 2014. Available from: http://hdl.handle.net/2152/28289

University of Toronto

23. Zagorovsky, Kyrylo. DNA-mediated Gold Nanoparticle Assembly: a Universal Platform for Therapeutic and Diagnostic Applications.

Degree: PhD, 2016, University of Toronto

URL: http://hdl.handle.net/1807/73227

► Unique physicochemical properties of nanomaterials offer novel methodologies for disease treatment and diagnosis. Dynamic nanoparticle assemblies are adding an additional level of functionality and flexibility… (more)

▼ Unique physicochemical properties of nanomaterials offer novel methodologies for disease treatment and diagnosis. Dynamic nanoparticle assemblies are adding an additional level of functionality and flexibility by combining multiple nanoparticle types into structures with stimuli-responsive size and surface chemistry. DNA-mediated gold nanoparticles assemblies are offering the most functional and versatile platform, which combines DNA addressability with large surface area, monodispersity, and easy functionalization of gold nanoparticles. Assembly size determines their application, with smaller nanoassemblies particularly suitable for drug delivery, and larger microassemblies used for biosensing. Despite a number of published studies, no in vivo examples or clinically ready biosensors have been reported. Therefore, the goal of this thesis was to identify the barriers for translation in both fields and to develop methods to overcome these limitations. To this end core-satellite nanoassemblies were designed for in vivo delivery, which efficiently protected loaded cargo and minimized macrophage recognition. Their controllable serum stability could be used as the mechanism of cargo release. In vivo nanoassemblies showed longer circulation half-life, improved tumour targeting, and renal bioelimination. In parallel, larger microassembly structures were combined with DNA enzyme signal amplification to generate a novel infectious pathogen biosensor. The assay was particularly suited for point-of-care setting with cheap and stable components and simple, fast, and specific colourimetric readout that could assay multiple targets in parallel. To demonstrate its clinical readiness, the assay was adapted for detection of a panel of five urinary tract infection bacteria. All targets were successfully identified in parallel at clinically relevant concentrations. Preliminary tests with E. coli patient samples confirmed clinical detection with good sensitivity and excellent specificity. This work presents a novel DNA-mediated gold nanoparticle assembly platform that is ready for in vivo translation and clinical in vitro diagnostics. Advisors/Committee Members: Chan, Warren CW, Biomedical Engineering.

Subjects/Keywords: Cancer therapy; Diagnostics; Gold nanoparticle; Nanoparticle; Nanoparticle assembly; Nanotechnology; 0652

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APA (6^th Edition):

Zagorovsky, K. (2016). DNA-mediated Gold Nanoparticle Assembly: a Universal Platform for Therapeutic and Diagnostic Applications. (Doctoral Dissertation). University of Toronto. Retrieved from http://hdl.handle.net/1807/73227

Chicago Manual of Style (16^th Edition):

Zagorovsky, Kyrylo. “DNA-mediated Gold Nanoparticle Assembly: a Universal Platform for Therapeutic and Diagnostic Applications.” 2016. Doctoral Dissertation, University of Toronto. Accessed January 24, 2021. http://hdl.handle.net/1807/73227.

MLA Handbook (7^th Edition):

Zagorovsky, Kyrylo. “DNA-mediated Gold Nanoparticle Assembly: a Universal Platform for Therapeutic and Diagnostic Applications.” 2016. Web. 24 Jan 2021.

Vancouver:

Zagorovsky K. DNA-mediated Gold Nanoparticle Assembly: a Universal Platform for Therapeutic and Diagnostic Applications. [Internet] [Doctoral dissertation]. University of Toronto; 2016. [cited 2021 Jan 24]. Available from: http://hdl.handle.net/1807/73227.

Council of Science Editors:

Zagorovsky K. DNA-mediated Gold Nanoparticle Assembly: a Universal Platform for Therapeutic and Diagnostic Applications. [Doctoral Dissertation]. University of Toronto; 2016. Available from: http://hdl.handle.net/1807/73227

Oregon State University

24. Zhou, Zheng. Studies on effect of stabilizers, chelators and inherent periodicity on nanoparticle antioxidant activity.

Degree: MS, Chemical Engineering, 2015, Oregon State University

URL: http://hdl.handle.net/1957/55810

► The level of reactive oxygen species (ROS) is tightly regulated in biological systems as overproduction can lead to oxidative stress and result in a number… (more)

Subjects/Keywords: Nanoparticle; Antioxidants – Physiological effect

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APA (6^th Edition):

Zhou, Z. (2015). Studies on effect of stabilizers, chelators and inherent periodicity on nanoparticle antioxidant activity. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/55810

Chicago Manual of Style (16^th Edition):

Zhou, Zheng. “Studies on effect of stabilizers, chelators and inherent periodicity on nanoparticle antioxidant activity.” 2015. Masters Thesis, Oregon State University. Accessed January 24, 2021. http://hdl.handle.net/1957/55810.

MLA Handbook (7^th Edition):

Zhou, Zheng. “Studies on effect of stabilizers, chelators and inherent periodicity on nanoparticle antioxidant activity.” 2015. Web. 24 Jan 2021.

Vancouver:

Zhou Z. Studies on effect of stabilizers, chelators and inherent periodicity on nanoparticle antioxidant activity. [Internet] [Masters thesis]. Oregon State University; 2015. [cited 2021 Jan 24]. Available from: http://hdl.handle.net/1957/55810.

Council of Science Editors:

Zhou Z. Studies on effect of stabilizers, chelators and inherent periodicity on nanoparticle antioxidant activity. [Masters Thesis]. Oregon State University; 2015. Available from: http://hdl.handle.net/1957/55810

NSYSU

25. Wang, Ching-Wen. Synthesis of Silver Nanowires by TiO2 Nanoparticles.

Degree: Master, Chemistry, 2008, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0623108-164201

► ãSilver nanowires prepared by the the reduction of AgNO3 at low temperature with thermocatalystic biphase (anatase and brookite phases) TiO2 nanoparticles are described. Furthermore, the… (more)

Subjects/Keywords: nanoparticle; TiO2; silver nanowire

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APA (6^th Edition):

Wang, C. (2008). Synthesis of Silver Nanowires by TiO2 Nanoparticles. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0623108-164201

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Wang, Ching-Wen. “Synthesis of Silver Nanowires by TiO2 Nanoparticles.” 2008. Thesis, NSYSU. Accessed January 24, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0623108-164201.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Wang, Ching-Wen. “Synthesis of Silver Nanowires by TiO2 Nanoparticles.” 2008. Web. 24 Jan 2021.

Vancouver:

Wang C. Synthesis of Silver Nanowires by TiO2 Nanoparticles. [Internet] [Thesis]. NSYSU; 2008. [cited 2021 Jan 24]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0623108-164201.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Wang C. Synthesis of Silver Nanowires by TiO2 Nanoparticles. [Thesis]. NSYSU; 2008. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0623108-164201

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

NSYSU

26. Chang, Chiung-Wen. Investigation of the Insulin Amyloid Fibrils Structural Information by Atomic Force Microscope.

Degree: Master, Chemistry, 2011, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0802111-124018

► We study the conformational change of insulin fibril growth from three aspects: the impact of (i) incubation time; (ⅱ) nano-particles; (iii) and ion added. We… (more)

Subjects/Keywords: salt; nanoparticle; AFM; amyloid; Insulin

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APA (6^th Edition):

Chang, C. (2011). Investigation of the Insulin Amyloid Fibrils Structural Information by Atomic Force Microscope. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0802111-124018

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Chang, Chiung-Wen. “Investigation of the Insulin Amyloid Fibrils Structural Information by Atomic Force Microscope.” 2011. Thesis, NSYSU. Accessed January 24, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0802111-124018.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Chang, Chiung-Wen. “Investigation of the Insulin Amyloid Fibrils Structural Information by Atomic Force Microscope.” 2011. Web. 24 Jan 2021.

Vancouver:

Chang C. Investigation of the Insulin Amyloid Fibrils Structural Information by Atomic Force Microscope. [Internet] [Thesis]. NSYSU; 2011. [cited 2021 Jan 24]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0802111-124018.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Chang C. Investigation of the Insulin Amyloid Fibrils Structural Information by Atomic Force Microscope. [Thesis]. NSYSU; 2011. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0802111-124018

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Utah

27. Lee, Chang-won. Development and characterization of water-soluble, photo-luminescent gold nanoparticles for bio-imaging.

Degree: PhD, Bioengineering, 2010, University of Utah

URL: http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/618/rec/681

► In this dissertation, we explored the synthesis of water-soluble and photoluminescence behavior near infrared emitting (610 nm) gold nanoparticles terminated by mercaptoalkanoic acid and possessing… (more)

Subjects/Keywords: Bioimaging; Gold nanoparticle; PH sensor

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APA (6^th Edition):

Lee, C. (2010). Development and characterization of water-soluble, photo-luminescent gold nanoparticles for bio-imaging. (Doctoral Dissertation). University of Utah. Retrieved from http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/618/rec/681

Chicago Manual of Style (16^th Edition):

Lee, Chang-won. “Development and characterization of water-soluble, photo-luminescent gold nanoparticles for bio-imaging.” 2010. Doctoral Dissertation, University of Utah. Accessed January 24, 2021. http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/618/rec/681.

MLA Handbook (7^th Edition):

Lee, Chang-won. “Development and characterization of water-soluble, photo-luminescent gold nanoparticles for bio-imaging.” 2010. Web. 24 Jan 2021.

Vancouver:

Lee C. Development and characterization of water-soluble, photo-luminescent gold nanoparticles for bio-imaging. [Internet] [Doctoral dissertation]. University of Utah; 2010. [cited 2021 Jan 24]. Available from: http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/618/rec/681.

Council of Science Editors:

Lee C. Development and characterization of water-soluble, photo-luminescent gold nanoparticles for bio-imaging. [Doctoral Dissertation]. University of Utah; 2010. Available from: http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/618/rec/681

University of Rochester

28. Domm, William G. Optimizing Antigen Delivery Approaches for HIV Immunization.

Degree: PhD, 2013, University of Rochester

URL: http://hdl.handle.net/1802/27888

► Vaccines are the most effective public health tool for prevention of infectious disease, and have largely (or completely) reduced the burden of morbidity and mortality… (more)

▼ Vaccines are the most effective public health tool for prevention of infectious disease, and have largely (or completely) reduced the burden of morbidity and mortality caused by viral pathogens such as measles, polio and smallpox. Despite this remarkable track record of success, we presently lack effective vaccines for several important viruses - including the human immunodeficiency virus type-1 (HIV-1), as well as novel strains of the influenza A virus (IAV), that may have pandemic potential. Infection by HIV-1 and IAV can be prevented by virus-neutralizing antibodies, but vaccine delivery methods that efficiently elicit such antibodies at the mucosal sites of virus transmission remain elusive. The goal of this thesis was therefore to identify antigen delivery methods that might improve the magnitude and quality of virus-specific humoral immune responses, including responses at mucosal sites. To do this, I focused on the analysis of humoral immune responses to representative viral (HIV, IAV) antigens that were either: (1) delivered in a dense, arrayed format on the surface of nanoscale scaffolds, or (2) expressed directly at the sublingual mucosal surface, using a vectored approach. My first set of experiments tested whether dense, repetitive display of a viral antigen on the surface of bacteriophage lambda capsids could elicit a superior humoral immune response compared to a soluble version of the same protein. For this initial study, the IAV hemagglutinin (HA) was selected as a test antigen. HA was successfully displayed on the phage particle, and shown to efficiently induce agglutination of red blood cells – much like wild-type influenza virus particles. However, immunization with phage particles displaying HA elicited humoral immune responses that were no greater in magnitude than those elicited by soluble HA. Similar results were obtained in complementary studies conducted by another member of the Dewhurst lab, who displayed the HIV-1 envelope glycoprotein (Env) on the surface of the phage capsid. These disappointing results were attributed to the highly immunogenic nature of the bacteriophage capsid itself. I next tested whether sublingual (SL) delivery of an Env-expressing viral vector could elicit strong Env-specific mucosal antibody responses. This is important because the SL mucosa is a readily accessible mucosal surface that has been underexplored as a vaccine delivery route. Two recombinant viral vectors were constructed, each expressing the same HIV-1 Env antigen: (a) an adenovirus serotype-5 [Ad5] vector and (b) herpes simplex virus [HSV-1] vector. SL delivery of the Ad5 vector elicited a strong Env-specific serum IgG response, high levels of Env-specific antibody-secreting cells (ASC), and strong serum and mucosal IgA responses. In contrast, SL delivery of the HSV-1 vector resulted in poor Env-specific responses. Interestingly, the rAd5 vector was efficiently trapped by saliva, unlike the HSV-1 vector – suggesting that mucoadhesion may be a prerequisite for…

Subjects/Keywords: HIV; Vaccine; Bacteriophage; Nanoparticle

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APA (6^th Edition):

Domm, W. G. (2013). Optimizing Antigen Delivery Approaches for HIV Immunization. (Doctoral Dissertation). University of Rochester. Retrieved from http://hdl.handle.net/1802/27888

Chicago Manual of Style (16^th Edition):

Domm, William G. “Optimizing Antigen Delivery Approaches for HIV Immunization.” 2013. Doctoral Dissertation, University of Rochester. Accessed January 24, 2021. http://hdl.handle.net/1802/27888.

MLA Handbook (7^th Edition):

Domm, William G. “Optimizing Antigen Delivery Approaches for HIV Immunization.” 2013. Web. 24 Jan 2021.

Vancouver:

Domm WG. Optimizing Antigen Delivery Approaches for HIV Immunization. [Internet] [Doctoral dissertation]. University of Rochester; 2013. [cited 2021 Jan 24]. Available from: http://hdl.handle.net/1802/27888.

Council of Science Editors:

Domm WG. Optimizing Antigen Delivery Approaches for HIV Immunization. [Doctoral Dissertation]. University of Rochester; 2013. Available from: http://hdl.handle.net/1802/27888

University of Rochester

29. Person, Steven M. Optical methods for nanoparticle detection and imaging.

Degree: PhD, 2014, University of Rochester

URL: http://hdl.handle.net/1802/28897

► As the size of particulate matter decreases, individual particles are both more difficult to detect and show unique scattering properties. This thesis presents methods for… (more)

▼ As the size of particulate matter decreases, individual particles are both more difficult to detect and show unique scattering properties. This thesis presents methods for optically detecting and imaging single nanoparticles and demonstrates the directional scattering properties of semiconductor nanoparticles. The first section describes a real-time interferometric method using multiple wavelengths to both detect and classify single nanoparticles in solution. A mixture of colloidal 60nm diameter Ag and 80nm diameter Au nanoparticles are identified within a 1 ms detection window. Detection sensitivity is limited by phase variations in the signal and two phase sensitive interferometric measurement techniques are proposed to improve the performance. In the second part of the thesis, GaAs nanoparticles are fabricated on a fused silica substrate using epitaxial lift-o and e-beam lithography. Recent theoretical work has predicted a suppression in the backscattering intensity in high refractive index semiconductor nanoparticles caused by interference between electric and magnetic dipole Mie resonances. Measurements of the fabricated GaAs particles show a suppressed backscattering at λ = 725nm agreeing with the modeled scattering properties and providing the first experimental verification of dipole interference in the visible spectrum. Potential applications for these highly directional scatterers include structured anti-reflection coatings and low-loss optical antennas for enhancing magnetic dipole interactions. Finally, a point-scanning confocal microscopy system is developed using a diamond turned ellipsoidal mirror, with a numerical aperture of ~1, as an illumination and collection objective. The focal properties are modeled using the Richards-Wolf integrals and alignment challenges are discussed. The imaging system wavefront performance is measured in an interferometer and the expected aberrated focal spot is simulated. A 40nm fluorescent nanoparticle is raster scanned through the focus to verify the measured performance. The tested system is the first confocal microscope implementing an ellipsoidal mirror as an imaging objective and provides high resolution, chromatic aberration free imagery of nanoparticles and nanostructures on opaque substrates. An additional spherical reference surface is proposed to monitor and simplify the system alignment.

Subjects/Keywords: Interferometry; Mie theory; Nanoparticle; Scattering

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APA (6^th Edition):

Person, S. M. (2014). Optical methods for nanoparticle detection and imaging. (Doctoral Dissertation). University of Rochester. Retrieved from http://hdl.handle.net/1802/28897

Chicago Manual of Style (16^th Edition):

Person, Steven M. “Optical methods for nanoparticle detection and imaging.” 2014. Doctoral Dissertation, University of Rochester. Accessed January 24, 2021. http://hdl.handle.net/1802/28897.

MLA Handbook (7^th Edition):

Person, Steven M. “Optical methods for nanoparticle detection and imaging.” 2014. Web. 24 Jan 2021.

Vancouver:

Person SM. Optical methods for nanoparticle detection and imaging. [Internet] [Doctoral dissertation]. University of Rochester; 2014. [cited 2021 Jan 24]. Available from: http://hdl.handle.net/1802/28897.

Council of Science Editors:

Person SM. Optical methods for nanoparticle detection and imaging. [Doctoral Dissertation]. University of Rochester; 2014. Available from: http://hdl.handle.net/1802/28897

University of Rochester

30. Brewer, Matthew G. The Effects that Antigen Density and Composition of Nanoparticles has on the Immune Response.

Degree: PhD, 2017, University of Rochester

URL: http://hdl.handle.net/1802/32725

► Vaccination has been the most effective method developed to minimize morbidity and mortality caused by infectious diseases. Unfortunately, there are many pathogens that presently lack… (more)

▼ Vaccination has been the most effective method developed to minimize morbidity and mortality caused by infectious diseases. Unfortunately, there are many pathogens that presently lack a highly efficacious vaccine, most notably of which is Human Immunodeficiency Virus 1 (HIV-1) and Influenza. Contemporary methods of vaccination have included use of recombinant soluble proteins, attenuated viruses, or viral vectors expressing antigens. Unfortunately, all of these methods have been insufficient for developing highly effective vaccines for the above viruses. Recently, nanoparticles (NP) have emerged as a very immunogenic and robust platform for antigen delivery to the immune response. Nanoparticles were therefore chosen as an exceedingly modifiable and novel scaffold that could be investigated for delivering antigen and improving the immune response against the surface glycoproteins of HIV and Influenza. Through the course of these studies it was discovered that decoration of viral envelope proteins on NP was able to improve the immune response. This improvement was characterized by increased B cell stimulation, antibody titers, elevated levels of antibody secreting cells (ASCs) present in immune organs and increased numbers of T follicular helper and germinal center B cells in the lymph node after immunization. These observations were surprising because they only occurred when NP were decorated at a low antigen density, which is controversial since it is generally believed that increased antigen density results in elevated immunogenicity. Additionally, the response to a naturally occurring nanoparticle, Influenza A virus, was studied to understand how an immune response is generated against both internal and external proteins. Surprisingly, it was discovered that after a primary infection the antibody isotype profile was different for surface versus internal proteins. This was characterized by a robust IgA component against both of the surface antigens, hemagglutinin and neuraminidase, while the internal protein, nucleoprotein, elicited minimal to no IgA. Tracking the tissue distribution of cells specific for these antigens highlighted that there are fundamentally different homing mechanisms that occur for ASCs specific for surface or internal proteins. This was emphasized by ASCs with surface protein specificities appearing at elevated levels in the lungs, whereas ASCs specific for internal proteins were much more abundant in the spleen and bone marrow of mice. The secondary response was also observed against each of these three proteins after immunization and then viral infection. Surprisingly, internal proteins elicited the most robust ASC secondary response compared to surface proteins. These results suggest that the location or composition (glycan vs non-glycan) of antigen on a NP may affect the humoral response generated against the individual components. Taken together these observations support that the composition of a NP: including antigen density, location of antigen, and type of antigen are…

Subjects/Keywords: Vaccine; Nanoparticle; HIV; Influenza; Density.

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APA (6^th Edition):

Brewer, M. G. (2017). The Effects that Antigen Density and Composition of Nanoparticles has on the Immune Response. (Doctoral Dissertation). University of Rochester. Retrieved from http://hdl.handle.net/1802/32725

Chicago Manual of Style (16^th Edition):

Brewer, Matthew G. “The Effects that Antigen Density and Composition of Nanoparticles has on the Immune Response.” 2017. Doctoral Dissertation, University of Rochester. Accessed January 24, 2021. http://hdl.handle.net/1802/32725.

MLA Handbook (7^th Edition):

Brewer, Matthew G. “The Effects that Antigen Density and Composition of Nanoparticles has on the Immune Response.” 2017. Web. 24 Jan 2021.

Vancouver:

Brewer MG. The Effects that Antigen Density and Composition of Nanoparticles has on the Immune Response. [Internet] [Doctoral dissertation]. University of Rochester; 2017. [cited 2021 Jan 24]. Available from: http://hdl.handle.net/1802/32725.

Council of Science Editors:

Brewer MG. The Effects that Antigen Density and Composition of Nanoparticles has on the Immune Response. [Doctoral Dissertation]. University of Rochester; 2017. Available from: http://hdl.handle.net/1802/32725

Open Access Theses and Dissertations