subject:(Nanofluids)

1. Shen, Jian. Hydrodynamics of droplet impingement on heated surfaces : effects of nanofluid and nano-structured surface.

Degree: PhD, Mechanical Engineering, 2009, Oregon State University

URL: http://hdl.handle.net/1957/11946

► This study investigates the hydrodynamic characteristics of droplet impinging on heated surfaces using High Speed High Resolution (HSHR) imaging and evaluates the effect of surface… (more)

▼ This study investigates the hydrodynamic characteristics of droplet impinging on heated surfaces using High Speed High Resolution (HSHR) imaging and evaluates the effect of surface temperature and using water and a nanofluid on a polished and a nano-structured surface. Three types of surfaces are used in the study: polished silicon, nano-structured porous silicon and gold coated polished silicon. Seven different surface temperatures including single phase (non-boiling) and two phase (boiling) conditions are studied. Droplet impact velocity, transient spreading diameter and dynamic contact angle are determined using image processing. Five stages are observed during impingement: initial impact, boiling (if the surface temperature is high enough), near constant wetting diameter evaporation, fast receding contact line evaporation and final dry-out. Results of water and a water based single-wall-carbon-nano-tube (SWCNT) nanofluid impinging on a polished silicon surface are compared to determine effects of nano-particles on impinging dynamics. The data show that the nanofluid exhibits larger spreading velocities, larger spreading diameters and an increase in early stage dynamic contact angle. The results of water impinging on both polished silicon and nano-structured silicon disks are compared to determine effects of the nano-structured surface on impingement dynamics. It is found that the nano-structured surface enhances the heat transfer for evaporative cooling at lower surface temperatures which is indicated by a shorter evaporation time. Ultimately, using nanofluid and nano-structured surface can reduce the total evaporation time up to 37% and 20%, respectively. Experimental data are compared with models that predict dynamic contact angle and non-dimensional maximum spreading diameter. Results show that the molecular-kinetic theory's dynamic contact angle model (M-K model) agrees well with current experimental data at low velocities range corresponding to later times during impingement, but over-predict at high velocities range corresponding to early times of initial impact. Predictions of maximum spreading diameter based on surface energy analysis are compared with current experimental data. Results indicate that all the four models over-predict unless empirical coefficients are adjusted to fit the test conditions. Advisors/Committee Members: Liburdy, James (advisor), Kanury, Murty (committee member).

Subjects/Keywords: Nanofluids

…7 2.3. Nanofluids… …nano-structured surfaces with significantly increased surface area. The studies of nanofluids… …conditions. Some recent research shows that nanofluids and nano-structured surfaces have great… …droplet impingement dynamics, droplet evaporative cooling process, nanofluids and structured… …in the liquid contact region. 2.3.Nanofluids Suspensions with nano-scale particles have…

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Shen, J. (2009). Hydrodynamics of droplet impingement on heated surfaces : effects of nanofluid and nano-structured surface. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/11946

Chicago Manual of Style (16^th Edition):

Shen, Jian. “Hydrodynamics of droplet impingement on heated surfaces : effects of nanofluid and nano-structured surface.” 2009. Doctoral Dissertation, Oregon State University. Accessed February 27, 2021. http://hdl.handle.net/1957/11946.

MLA Handbook (7^th Edition):

Shen, Jian. “Hydrodynamics of droplet impingement on heated surfaces : effects of nanofluid and nano-structured surface.” 2009. Web. 27 Feb 2021.

Vancouver:

Shen J. Hydrodynamics of droplet impingement on heated surfaces : effects of nanofluid and nano-structured surface. [Internet] [Doctoral dissertation]. Oregon State University; 2009. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/1957/11946.

Council of Science Editors:

Shen J. Hydrodynamics of droplet impingement on heated surfaces : effects of nanofluid and nano-structured surface. [Doctoral Dissertation]. Oregon State University; 2009. Available from: http://hdl.handle.net/1957/11946

University of Hong Kong

2. 魏晓浩. Nanofluids: synthesis, characterization and thermal conductivity.

Degree: 2010, University of Hong Kong

URL: http://hdl.handle.net/10722/130916

Subjects/Keywords: Nanofluids.

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

魏晓浩. (2010). Nanofluids: synthesis, characterization and thermal conductivity. (Thesis). University of Hong Kong. Retrieved from http://hdl.handle.net/10722/130916

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

Chicago Manual of Style (16^th Edition):

魏晓浩. “Nanofluids: synthesis, characterization and thermal conductivity.” 2010. Thesis, University of Hong Kong. Accessed February 27, 2021. http://hdl.handle.net/10722/130916.

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

MLA Handbook (7^th Edition):

魏晓浩. “Nanofluids: synthesis, characterization and thermal conductivity.” 2010. Web. 27 Feb 2021.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Vancouver:

魏晓浩. Nanofluids: synthesis, characterization and thermal conductivity. [Internet] [Thesis]. University of Hong Kong; 2010. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/10722/130916.

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

Council of Science Editors:

魏晓浩. Nanofluids: synthesis, characterization and thermal conductivity. [Thesis]. University of Hong Kong; 2010. Available from: http://hdl.handle.net/10722/130916

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

University of Hong Kong

3. 姜为. Synthesis and thermal conductivity of nanofluids.

Degree: 2010, University of Hong Kong

URL: http://hdl.handle.net/10722/132964

Subjects/Keywords: Nanofluids.

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

姜为. (2010). Synthesis and thermal conductivity of nanofluids. (Thesis). University of Hong Kong. Retrieved from http://hdl.handle.net/10722/132964

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

Chicago Manual of Style (16^th Edition):

姜为. “Synthesis and thermal conductivity of nanofluids.” 2010. Thesis, University of Hong Kong. Accessed February 27, 2021. http://hdl.handle.net/10722/132964.

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

MLA Handbook (7^th Edition):

姜为. “Synthesis and thermal conductivity of nanofluids.” 2010. Web. 27 Feb 2021.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Vancouver:

姜为. Synthesis and thermal conductivity of nanofluids. [Internet] [Thesis]. University of Hong Kong; 2010. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/10722/132964.

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

Council of Science Editors:

姜为. Synthesis and thermal conductivity of nanofluids. [Thesis]. University of Hong Kong; 2010. Available from: http://hdl.handle.net/10722/132964

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

4. Yohannes Yirga Kefela. Convictive heat and mass transfer in Magnetohydrodynamic flow of Nanofluids;.

Degree: 2014, Osmania University

URL: http://shodhganga.inflibnet.ac.in/handle/10603/24162

newline

Advisors/Committee Members: Bandari Shankar.

Subjects/Keywords: Nanofluids

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Kefela, Y. Y. (2014). Convictive heat and mass transfer in Magnetohydrodynamic flow of Nanofluids;. (Thesis). Osmania University. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/24162

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):

Kefela, Yohannes Yirga. “Convictive heat and mass transfer in Magnetohydrodynamic flow of Nanofluids;.” 2014. Thesis, Osmania University. Accessed February 27, 2021. http://shodhganga.inflibnet.ac.in/handle/10603/24162.

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

MLA Handbook (7^th Edition):

Kefela, Yohannes Yirga. “Convictive heat and mass transfer in Magnetohydrodynamic flow of Nanofluids;.” 2014. Web. 27 Feb 2021.

Vancouver:

Kefela YY. Convictive heat and mass transfer in Magnetohydrodynamic flow of Nanofluids;. [Internet] [Thesis]. Osmania University; 2014. [cited 2021 Feb 27]. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/24162.

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

Council of Science Editors:

Kefela YY. Convictive heat and mass transfer in Magnetohydrodynamic flow of Nanofluids;. [Thesis]. Osmania University; 2014. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/24162

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

McMaster University

5. Almalki, Naief. An Experimental Investigation of the Effect of Heater Surface Preparation Method on Pool Boiling of Nanofluids.

Degree: MASc, 2015, McMaster University

URL: http://hdl.handle.net/11375/18201

► An experimental investigation was carried out to study the effect of heater surface preparation on pool boiling of nanofluids. The boiling surface was prepared using… (more)

▼ An experimental investigation was carried out to study the effect of heater surface preparation on pool boiling of nanofluids. The boiling surface was prepared using different methods: (1) using a diamond turning machine, (2) a conventional lathe machine, and (3) polished using emery sandpaper. The average surface roughness of the diamond turning machined surface was 6 nm and 470 nm for the surfaces prepared using the lathe and sandpaper. The boiling surfaces considered in this study are flat copper surfaces with a diameter of 25.4 mm. Al2O3-Water nanofluids prepared using nanoparticles with an initial size of 10 nm and concentration of 0.05%wt were used throughout the present study. In order to improve the nanofluids stability Sodium dodecylbenzenesulfonate (SDBS) was added to the base fluid (water) with a concentration of 0.1%wt. In order to understand the effect of the nanofluids and the surfactant separately and together, pool boiling experiments using distilled water only, nanofluids, distilled water plus the SDBS surfactant, and nanofluids mixed with SDBS (nanosuspensions) were carried out on clean surfaces. The nanofluids and nanosuspensions boiling experiments were followed by distilled water boiling experiments in order to assess the change of the surface characteristics due to any nanoparticles deposition. The same set of boiling experiments was carried out on each of the three prepared surfaces. The experimental results indicated that for the smooth and rough machined surfaces, the heat transfer coefficient was increased for the nanofluids and the nanosuspensions with respect to distilled water. Distilled water boiling experiments on the unclean (used) surfaces showed that the heat transfer behavior is almost similar to the distilled water on the clean surface, which indicates that the deposition on the smooth and rough machined surfaces was minimal and hence the enhancement in the heat transfer was due to the change in the thermo-physical properties of the nanofluids and not due to the change in the heater surface condition. A similar trend was observed in the case of the polished surface in which case nanofluids and nanosuspensions resulted in an enhancement in the rate of heat transfer. However, distilled water boiled on unclean surfaces showed that the boiling curve has shifted to the left compared with the curve of the distilled water on the clean surface. Boiling of distilled water on unclean surfaces showed that the boiling curve was enhanced, which can be attributed to the change in the surface condition and the change in the thermo-physical properties of nanofluids. Photographs of the boiling surfaces and surface measurements taken before and after the nanofluids and nanosuspensions experiments showed that the machined surfaces had less nanoparticles deposition than the sandpaper polished surface. These results indicate that the method of surface preparation has a significant effect on nanoparticles deposition and consequently on the pool boiling heat transfer… Advisors/Committee Members: Hamed, M. S., Mechanical Engineering.

Subjects/Keywords: nanofluids boiling

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Almalki, N. (2015). An Experimental Investigation of the Effect of Heater Surface Preparation Method on Pool Boiling of Nanofluids. (Masters Thesis). McMaster University. Retrieved from http://hdl.handle.net/11375/18201

Chicago Manual of Style (16^th Edition):

Almalki, Naief. “An Experimental Investigation of the Effect of Heater Surface Preparation Method on Pool Boiling of Nanofluids.” 2015. Masters Thesis, McMaster University. Accessed February 27, 2021. http://hdl.handle.net/11375/18201.

MLA Handbook (7^th Edition):

Almalki, Naief. “An Experimental Investigation of the Effect of Heater Surface Preparation Method on Pool Boiling of Nanofluids.” 2015. Web. 27 Feb 2021.

Vancouver:

Almalki N. An Experimental Investigation of the Effect of Heater Surface Preparation Method on Pool Boiling of Nanofluids. [Internet] [Masters thesis]. McMaster University; 2015. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/11375/18201.

Council of Science Editors:

Almalki N. An Experimental Investigation of the Effect of Heater Surface Preparation Method on Pool Boiling of Nanofluids. [Masters Thesis]. McMaster University; 2015. Available from: http://hdl.handle.net/11375/18201

Rutgers University

6. Torres, Jonathan, 1987-. Boiling and spreading behavior of impinging nanofluid droplets on a heated surface.

Degree: MS, Mechanical and Aerospace Engineering, 2011, Rutgers University

URL: http://hdl.rutgers.edu/1782.1/rucore10001600001.ETD.000063669

► The effects of nanofluids on water drops impinging onto heated surfaces are studied. This includes analyzing the drop spreading and boiling behavior. In order to… (more)

Subjects/Keywords: Nanofluids

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Torres, Jonathan, 1. (2011). Boiling and spreading behavior of impinging nanofluid droplets on a heated surface. (Masters Thesis). Rutgers University. Retrieved from http://hdl.rutgers.edu/1782.1/rucore10001600001.ETD.000063669

Chicago Manual of Style (16^th Edition):

Torres, Jonathan, 1987-. “Boiling and spreading behavior of impinging nanofluid droplets on a heated surface.” 2011. Masters Thesis, Rutgers University. Accessed February 27, 2021. http://hdl.rutgers.edu/1782.1/rucore10001600001.ETD.000063669.

MLA Handbook (7^th Edition):

Torres, Jonathan, 1987-. “Boiling and spreading behavior of impinging nanofluid droplets on a heated surface.” 2011. Web. 27 Feb 2021.

Vancouver:

Torres, Jonathan 1. Boiling and spreading behavior of impinging nanofluid droplets on a heated surface. [Internet] [Masters thesis]. Rutgers University; 2011. [cited 2021 Feb 27]. Available from: http://hdl.rutgers.edu/1782.1/rucore10001600001.ETD.000063669.

Council of Science Editors:

Torres, Jonathan 1. Boiling and spreading behavior of impinging nanofluid droplets on a heated surface. [Masters Thesis]. Rutgers University; 2011. Available from: http://hdl.rutgers.edu/1782.1/rucore10001600001.ETD.000063669

7. Velagapudi Vasu. Theoretical analysis of compact heat exchanger using Nanofluids.

Degree: 2010, Jawaharlal Nehru Technological University

URL: http://shodhganga.inflibnet.ac.in/handle/10603/2682

►

Cooling is indispensable for maintaining the desired performance and reliability of a wide variety of products, such as computers, car engines and high-powered laser. With… (more)

▼

Cooling is indispensable for maintaining the desired performance and reliability of a wide variety of products, such as computers, car engines and high-powered laser. With the increase of heat loads and heat fluxes caused by more power and smaller sizes for these products, cooling is one of the top technical challenges faced by the industries like microelectronics, transportation, manufacturing, metrology and defense. Recently, single-phase liquid cooling techniques such as microchannel heat sink and two-phase liquid cooling technologies like heat pipes, thermosyphons, direct immersion cooling and spray cooling for chip or package level cooling have emerged. However, with continued miniaturization, increasing heat dissipation and inherently low thermal conductivity is a primary limitation in developing energy-efficient heat transfer fluids that are required for ultrahigh-performance cooling in new generations of products. Therefore, the cooling issue will intensify in many industries from electronics and photonics to transportation, energy supply, defense and medical. Development of the nanomaterials technology has made it possible to structure a new type of heat transfer fluids formed by suspending nanoparticles (diameter less than 100nm) in conventional base fluids like water and ethylene glycol. Choi (1995) coined the term Nanofluids to refer to this new class of fluids that exhibits thermal properties superior to those of their base fluids. The nanoparticles suspended in a base liquid are in random motion under the influence of several acting forces, such as Langevin force which is a random function of time, and reflects the atomic structure of the medium. The exact role of this stochastic motion on the morphology of nanofluids and energy transport inside the nanofluids is not well understood. Due to rapid fluid mixing effects strengthens the energy transport inside the nanofluids by modifying the temperature profiles.

Abstract includes, References p.186-207

Advisors/Committee Members: Kumar, A C S, Rama Krishna, K.

Subjects/Keywords: Nanofluids; Mechanical engineering

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Vasu, V. (2010). Theoretical analysis of compact heat exchanger using Nanofluids. (Thesis). Jawaharlal Nehru Technological University. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/2682

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):

Vasu, Velagapudi. “Theoretical analysis of compact heat exchanger using Nanofluids.” 2010. Thesis, Jawaharlal Nehru Technological University. Accessed February 27, 2021. http://shodhganga.inflibnet.ac.in/handle/10603/2682.

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

MLA Handbook (7^th Edition):

Vasu, Velagapudi. “Theoretical analysis of compact heat exchanger using Nanofluids.” 2010. Web. 27 Feb 2021.

Vancouver:

Vasu V. Theoretical analysis of compact heat exchanger using Nanofluids. [Internet] [Thesis]. Jawaharlal Nehru Technological University; 2010. [cited 2021 Feb 27]. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/2682.

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

Council of Science Editors:

Vasu V. Theoretical analysis of compact heat exchanger using Nanofluids. [Thesis]. Jawaharlal Nehru Technological University; 2010. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/2682

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

Oregon State University

8. Niyaghi, Faraz. Stability and biological responses of zinc oxide metalworking nanofluids (ZnO MWnF™).

Degree: MS, Industrial Engineering, 2013, Oregon State University

URL: http://hdl.handle.net/1957/48615

► Zinc oxide nanoparticles (ZnO NPs) have demonstrated the ability to improve lubrication and thermal conductivity, and stand as promising metalworking lubricant and coolant additives due… (more)

Subjects/Keywords: Nanotoxicology; Nanofluids – Stability

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Niyaghi, F. (2013). Stability and biological responses of zinc oxide metalworking nanofluids (ZnO MWnF™). (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/48615

Chicago Manual of Style (16^th Edition):

Niyaghi, Faraz. “Stability and biological responses of zinc oxide metalworking nanofluids (ZnO MWnF™).” 2013. Masters Thesis, Oregon State University. Accessed February 27, 2021. http://hdl.handle.net/1957/48615.

MLA Handbook (7^th Edition):

Niyaghi, Faraz. “Stability and biological responses of zinc oxide metalworking nanofluids (ZnO MWnF™).” 2013. Web. 27 Feb 2021.

Vancouver:

Niyaghi F. Stability and biological responses of zinc oxide metalworking nanofluids (ZnO MWnF™). [Internet] [Masters thesis]. Oregon State University; 2013. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/1957/48615.

Council of Science Editors:

Niyaghi F. Stability and biological responses of zinc oxide metalworking nanofluids (ZnO MWnF™). [Masters Thesis]. Oregon State University; 2013. Available from: http://hdl.handle.net/1957/48615

Nelson Mandela Metropolitan University

9. Gandidzanwa, Sendibitiyosi. The development of palladium nanoparticles for radiopharmaceutical application.

Degree: 2019, Nelson Mandela Metropolitan University

URL: http://hdl.handle.net/10948/42163

► The dissertation describes an in-depth synthesis and optimisation of palladium(0) nanoparticles of three distinct size ranges, respective capping agents, and cellular uptake studies using a… (more)

▼ The dissertation describes an in-depth synthesis and optimisation of palladium(0) nanoparticles of three distinct size ranges, respective capping agents, and cellular uptake studies using a non-toxic concentration (10 μM), laying a foundation for the design of palladium-based folate receptor-targeted theranostic nanoradiopharmaceutical. In the preliminary selection to determine the optimal diamines for the study, ethylenediamine, hexamethylenediamine, 1,10-diaminodecane, 1,12-diaminododecane, 1,4- diaminobenzene, 4,4’-ethylenedianiline, 1,2-diphenyl-1,2-diaminoethane, and tetraaminophthalocyanine were employed. The characterisation of the nanoparticles obtained from the in situ reduction of palladium(II) salt at room temperature by either 1,2,3- trihydroxybenze (pyrogallol), citric acid, sodium metabisulphite, sodium borohydride, hydrazine hydrate, or formaldehyde was performed. Ethylenediamine and sodium borohydride were found to be the best diamine capping and reducing agent, respectively. Systematic investigations determined that the nanoparticle synthesis was dependent on various reaction parameters: such as reaction temperature, time, reductant reducing power, and capping agents. The parameters effects on the nanoparticle size, morphology, shape, stability, crystallinity, and surface charge were investigated. The optical properties, elemental composition, functional group, concentration and molecular weight for the synthesised nanoparticles or conjugates were determined. These properties were analysed using Ultraviolet–visible spectroscopy (UV-Vis), high resolution transmission electron microscopy (HRTEM) coupled with selective area electron diffraction (SAED) and energy dispersive X-ray spectroscopy (EDS), X-ray powder diffraction (XRD), zeta potential (ZP), dynamic light scattering (DLS), elemental analysis (EA), 1H and 13C-nuclear magnetic resonance (1H- and 13CNMR), Fourier-transform infrared spectroscopy (FTIR), inductively coupled plasma-optical emission spectroscopy (ICP-OES), and liquid chromatography-mass spectroscopy (LC-MS). The in vitro cytotoxicity, cell uptake, and internalisation studies of palladium nanoparticles (10 μM) ranging in size and different types of capping agent were performed using three breast cancer cell lines: MDA-MB-468 , MCF-7 and MDA-MB-231 , and a non-tumorigenic MCF-10A breast cell line. The cell uptake and internalisation were investigated using ICP-OES and TEM. A high dependence between reduction rate and concentration of palladium precursor was observed for the room temperature synthesis of palladium nanoparticles, and the employed synthesis procedure will be applied to the hot palladium isotope (109Pd). A facile, green, aqueous synthesis route for palladium nanoparticles at room temperature was developed, and the synthesised nanoparticles indicated narrow size distributions. A concentration dependence between cytotoxicity and palladium nanoparticles was observed, with lower concentrations (10 μM) exhibiting minimal cytotoxicity relative to higher concentrations (100 μM).…

Subjects/Keywords: Nanotechnology; Nanostructures; Nanofluids

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Gandidzanwa, S. (2019). The development of palladium nanoparticles for radiopharmaceutical application. (Thesis). Nelson Mandela Metropolitan University. Retrieved from http://hdl.handle.net/10948/42163

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):

Gandidzanwa, Sendibitiyosi. “The development of palladium nanoparticles for radiopharmaceutical application.” 2019. Thesis, Nelson Mandela Metropolitan University. Accessed February 27, 2021. http://hdl.handle.net/10948/42163.

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

MLA Handbook (7^th Edition):

Gandidzanwa, Sendibitiyosi. “The development of palladium nanoparticles for radiopharmaceutical application.” 2019. Web. 27 Feb 2021.

Vancouver:

Gandidzanwa S. The development of palladium nanoparticles for radiopharmaceutical application. [Internet] [Thesis]. Nelson Mandela Metropolitan University; 2019. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/10948/42163.

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

Council of Science Editors:

Gandidzanwa S. The development of palladium nanoparticles for radiopharmaceutical application. [Thesis]. Nelson Mandela Metropolitan University; 2019. Available from: http://hdl.handle.net/10948/42163

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

University of Hong Kong

10. 张玉相. Microfluidics: fabrication, droplets, bubblesand nanofluids synthesis.

Degree: 2010, University of Hong Kong

URL: http://hdl.handle.net/10722/130936

Subjects/Keywords: Microfluidics.; Nanofluids.

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

张玉相. (2010). Microfluidics: fabrication, droplets, bubblesand nanofluids synthesis. (Thesis). University of Hong Kong. Retrieved from http://hdl.handle.net/10722/130936

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

Chicago Manual of Style (16^th Edition):

张玉相. “Microfluidics: fabrication, droplets, bubblesand nanofluids synthesis.” 2010. Thesis, University of Hong Kong. Accessed February 27, 2021. http://hdl.handle.net/10722/130936.

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

MLA Handbook (7^th Edition):

张玉相. “Microfluidics: fabrication, droplets, bubblesand nanofluids synthesis.” 2010. Web. 27 Feb 2021.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Vancouver:

张玉相. Microfluidics: fabrication, droplets, bubblesand nanofluids synthesis. [Internet] [Thesis]. University of Hong Kong; 2010. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/10722/130936.

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

Council of Science Editors:

张玉相. Microfluidics: fabrication, droplets, bubblesand nanofluids synthesis. [Thesis]. University of Hong Kong; 2010. Available from: http://hdl.handle.net/10722/130936

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

Penn State University

11. Chen, You-han. Investigating The Aggregation Effect in Nanofluids by Molecular Dynamics.

Degree: 2013, Penn State University

URL: https://submit-etda.libraries.psu.edu/catalog/19733

► Nanofluids have been proposed to have superior heat transfer ability than typical coolant, but the mechanisms of thermal conductivity enhancement still remain obsecure. This study,… (more)

Subjects/Keywords: Nanofluids; Molecular Dynamics; Thermal Conductivity

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Chen, Y. (2013). Investigating The Aggregation Effect in Nanofluids by Molecular Dynamics. (Thesis). Penn State University. Retrieved from https://submit-etda.libraries.psu.edu/catalog/19733

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, You-han. “Investigating The Aggregation Effect in Nanofluids by Molecular Dynamics.” 2013. Thesis, Penn State University. Accessed February 27, 2021. https://submit-etda.libraries.psu.edu/catalog/19733.

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, You-han. “Investigating The Aggregation Effect in Nanofluids by Molecular Dynamics.” 2013. Web. 27 Feb 2021.

Vancouver:

Chen Y. Investigating The Aggregation Effect in Nanofluids by Molecular Dynamics. [Internet] [Thesis]. Penn State University; 2013. [cited 2021 Feb 27]. Available from: https://submit-etda.libraries.psu.edu/catalog/19733.

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

Council of Science Editors:

Chen Y. Investigating The Aggregation Effect in Nanofluids by Molecular Dynamics. [Thesis]. Penn State University; 2013. Available from: https://submit-etda.libraries.psu.edu/catalog/19733

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

University of Newcastle

12. Azizian, Reza. A fundamental study on heat transfer characteristics of magnetite nanofluids.

Degree: PhD, 2013, University of Newcastle

URL: http://hdl.handle.net/1959.13/1038738

►

Research Doctorate - Doctor of Philosophy (PhD)

This study investigated the heat transfer behaviour of nanofluids with focus on a magnetite nanofluid as an alternative… (more)

▼

Research Doctorate - Doctor of Philosophy (PhD)

This study investigated the heat transfer behaviour of nanofluids with focus on a magnetite nanofluid as an alternative for the next generation of cooling applications. The very first aim of this study was to shed light on conflicting data reported in the literature about the thermal conductivity of conventional nanofluids (non-magnetic). For this purpose, the thermal conductivity of different nanofluid samples were measured under different conditions (namely particle volume fractions, temperature and pH) and results were compared with theoretical prediction of mixture theory. Shortcomings of different hypotheses were examined, analysed and explained. All of the experimental data were within the ±10% boundary of theoretical mixture theory (i.e. Maxwell model). It was shown that higher thermal conductivity in the conventional nanofluids can be achieved by controlling the aggregation size (i.e. pH value). To test this hypothesis, artificial aggregates were generated by applying an external magnetic field to the magnetite nanofluid. Thermal conductivity enhancement by up to 160% was observed for 0.86 vol% magnetite nanofluids (Fe3O4-water), subjected to the magnetic field intensity of 32 mT parallel to the temperature gradient. On the other hand, the thermal conductivity of magnetite nanofluid is almost constant under the applied magnetic field perpendicular to the temperature gradient. Convective heat transfer coefficient of magnetite nanofluid under laminar flow condition was also considered in the absence and presence of an external magnetic field. Heat transfer in magnetite nanofluids with and without magnetic field has been performed previously. However, the extent of the experiments and analysis is the main goal which has been achieved through this study. It has been shown that the experimental data in the absence of an external magnetic field follows the prediction of standard correlation for laminar flow heat transfer (Shah equation) using the thermophysical properties of nanofluid. Up to 300% enhancement in convective heat transfer enhancement has been observed at Re=745 and the magnetic field gradient of 32.5 mT/mm. Moreover, the effect of magnetic field on pressure drop was insignificant. It is concluded here that aggregation is the main mechanism of heat transfer in nanofluids. The thermal conductivity and convective heat transfer coefficient of magnetite nanofluids can be altered far beyond the prediction of traditional theories by applying an external magnetic field.

Advisors/Committee Members: University of Newcastle. Faculty of Engineering & Built Environment, School of Engineering.

Subjects/Keywords: heat transfer; nanofluids; thermal conductivity

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Azizian, R. (2013). A fundamental study on heat transfer characteristics of magnetite nanofluids. (Doctoral Dissertation). University of Newcastle. Retrieved from http://hdl.handle.net/1959.13/1038738

Chicago Manual of Style (16^th Edition):

Azizian, Reza. “A fundamental study on heat transfer characteristics of magnetite nanofluids.” 2013. Doctoral Dissertation, University of Newcastle. Accessed February 27, 2021. http://hdl.handle.net/1959.13/1038738.

MLA Handbook (7^th Edition):

Azizian, Reza. “A fundamental study on heat transfer characteristics of magnetite nanofluids.” 2013. Web. 27 Feb 2021.

Vancouver:

Azizian R. A fundamental study on heat transfer characteristics of magnetite nanofluids. [Internet] [Doctoral dissertation]. University of Newcastle; 2013. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/1959.13/1038738.

Council of Science Editors:

Azizian R. A fundamental study on heat transfer characteristics of magnetite nanofluids. [Doctoral Dissertation]. University of Newcastle; 2013. Available from: http://hdl.handle.net/1959.13/1038738

Nelson Mandela Metropolitan University

13. Strydom, Martin. Manufacturing of continuous flow equipment.

Degree: 2018, Nelson Mandela Metropolitan University

URL: http://hdl.handle.net/10948/35818

► For the work of this thesis a proof of concept microreactor and pump have been designed. Open source technology was used where possible to reduce… (more)

Subjects/Keywords: Microfluidics; Nanofluids; Micro-reactor

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Strydom, M. (2018). Manufacturing of continuous flow equipment. (Thesis). Nelson Mandela Metropolitan University. Retrieved from http://hdl.handle.net/10948/35818

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):

Strydom, Martin. “Manufacturing of continuous flow equipment.” 2018. Thesis, Nelson Mandela Metropolitan University. Accessed February 27, 2021. http://hdl.handle.net/10948/35818.

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

MLA Handbook (7^th Edition):

Strydom, Martin. “Manufacturing of continuous flow equipment.” 2018. Web. 27 Feb 2021.

Vancouver:

Strydom M. Manufacturing of continuous flow equipment. [Internet] [Thesis]. Nelson Mandela Metropolitan University; 2018. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/10948/35818.

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

Council of Science Editors:

Strydom M. Manufacturing of continuous flow equipment. [Thesis]. Nelson Mandela Metropolitan University; 2018. Available from: http://hdl.handle.net/10948/35818

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

KTH

14. Basagoiti, Itziar Lumbreras. Single phase laminar convective heat transfer of nanofluids in a micro-tube.

Degree: Energy Technology, 2011, KTH

URL: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-80237

► Nanofluids are homogeneous mixture of dispersed solid particles in base fluids. These solid particles are usually smaller than 100nm. Suspended nanoparticles modify the properties… (more)

▼ Nanofluids are homogeneous mixture of dispersed solid particles in base fluids. These solid particles are usually smaller than 100nm. Suspended nanoparticles modify the properties of based fluids. It is claimed, in some literature, for nanofluids to have greater than expected heat transfer performance. Due to this, nanofluids have gained great attention from both research and development and industries active in cooling systems. This thesis reports several measurements of convective heat transfer coefficient in a horizontal open micro-tube test section under laminar flow regime. The test section has an inner diameter of 0.5mm made of stainless steel and it has a length of 30cm. Two different test sections have been built. The first one has 13 thermocouples attached on the wall and the second one has 10. These thermocouples are used to measure the wall temperature distribution along the tube. In addition, two more thermocouples are used inside the micro-tube, at the inlet and outlet, to measure the bulk temperature of the nanofluids. A syringe pump is used for injecting the nanofluids through the micro-tube. A DC power supply provides constant heat flux along the test section and a differential pressure transducer measures the pressure drop of the test section. Aqueous based Al2O3 (9 wt %), ZrO2 (9 wt %), TiO2(9 wt %), CeO2 (9wt %), CNT (0.15 wt %), and diamond (1 wt %) have been tested in this thesis. Local Shah’s correlation predicts very well the behaviour of these nanofluids. The results are compared with water in six different ways: heat transfer forconstant Reynolds numbers, volume and mass flow rates, pressure drops andpumping powers. Enhancement in heat transfer is recognisable only in thegraphs of Nu numbers for constant Reynolds numbers. This can be attributed to the higher viscosity for nanofluids. Moreover, friction factor for constant Reynolds numbers has been compared. All the nanofluids with the exception of Al2O3 and diamond suit quite well with Darcy-Weisbach correlation.

Subjects/Keywords: Nanofluids; convective; micro-tube; laminar

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Basagoiti, I. L. (2011). Single phase laminar convective heat transfer of nanofluids in a micro-tube. (Thesis). KTH. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-80237

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):

Basagoiti, Itziar Lumbreras. “Single phase laminar convective heat transfer of nanofluids in a micro-tube.” 2011. Thesis, KTH. Accessed February 27, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-80237.

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

MLA Handbook (7^th Edition):

Basagoiti, Itziar Lumbreras. “Single phase laminar convective heat transfer of nanofluids in a micro-tube.” 2011. Web. 27 Feb 2021.

Vancouver:

Basagoiti IL. Single phase laminar convective heat transfer of nanofluids in a micro-tube. [Internet] [Thesis]. KTH; 2011. [cited 2021 Feb 27]. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-80237.

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

Council of Science Editors:

Basagoiti IL. Single phase laminar convective heat transfer of nanofluids in a micro-tube. [Thesis]. KTH; 2011. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-80237

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

Hong Kong University of Science and Technology

15. Liu, Chong. Molecular dynamics simulation of nanochannel flows.

Degree: 2011, Hong Kong University of Science and Technology

URL: http://repository.ust.hk/ir/Record/1783.1-7201 ; https://doi.org/10.14711/thesis-b1146181 ; http://repository.ust.hk/ir/bitstream/1783.1-7201/1/th_redirect.html

► Nanoscale fluid flow systems involve both microscopic and macroscopic parameters, which may couple with each another and lead to many special properties. The primary objective… (more)

Subjects/Keywords: Nanofluids ; Molecular dynamics ; Fluid dynamics

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Liu, C. (2011). Molecular dynamics simulation of nanochannel flows. (Thesis). Hong Kong University of Science and Technology. Retrieved from http://repository.ust.hk/ir/Record/1783.1-7201 ; https://doi.org/10.14711/thesis-b1146181 ; http://repository.ust.hk/ir/bitstream/1783.1-7201/1/th_redirect.html

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

Chicago Manual of Style (16^th Edition):

Liu, Chong. “Molecular dynamics simulation of nanochannel flows.” 2011. Thesis, Hong Kong University of Science and Technology. Accessed February 27, 2021. http://repository.ust.hk/ir/Record/1783.1-7201 ; https://doi.org/10.14711/thesis-b1146181 ; http://repository.ust.hk/ir/bitstream/1783.1-7201/1/th_redirect.html.

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

MLA Handbook (7^th Edition):

Liu, Chong. “Molecular dynamics simulation of nanochannel flows.” 2011. Web. 27 Feb 2021.

Vancouver:

Liu C. Molecular dynamics simulation of nanochannel flows. [Internet] [Thesis]. Hong Kong University of Science and Technology; 2011. [cited 2021 Feb 27]. Available from: http://repository.ust.hk/ir/Record/1783.1-7201 ; https://doi.org/10.14711/thesis-b1146181 ; http://repository.ust.hk/ir/bitstream/1783.1-7201/1/th_redirect.html.

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

Council of Science Editors:

Liu C. Molecular dynamics simulation of nanochannel flows. [Thesis]. Hong Kong University of Science and Technology; 2011. Available from: http://repository.ust.hk/ir/Record/1783.1-7201 ; https://doi.org/10.14711/thesis-b1146181 ; http://repository.ust.hk/ir/bitstream/1783.1-7201/1/th_redirect.html

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

Hong Kong University of Science and Technology

16. Wu, Jinbo. DNA amplification and detection in micro/nano-fluidic chip.

Degree: 2011, Hong Kong University of Science and Technology

URL: http://repository.ust.hk/ir/Record/1783.1-7367 ; https://doi.org/10.14711/thesis-b1155121 ; http://repository.ust.hk/ir/bitstream/1783.1-7367/1/th_redirect.html

► In this thesis, several critical topics related to PCR-based micro/nano-fluidic chip were studied: from the chip integration and fabrication (three PCR chips and one DNA… (more)

▼ In this thesis, several critical topics related to PCR-based micro/nano-fluidic chip were studied: from the chip integration and fabrication (three PCR chips and one DNA detection chip were introduced), PCR optimization to materials’ PCR inhibition. A highly integrated PCR microfluidic chip combined giant electrorheological (GER) fluid actuated micromixer and micropump and a microheater array was demonstrated in chapter 2. Afterward a microheater and a thermal sensor were fabricated inside elastomeric PDMS micro channels by injecting silver paint (or other conductive materials) into the channels. With a high-precision control scheme, microheaters can be used for rapid heating, with precise temperature control and uniform thermal distribution. Using such a microheater and feedback system, the PCR experiment was carried out whereas the DNA was successfully amplified in 25 cycles, with 1 minute per cycle. As reported in chapter 4, we formulated a simplified PCR profile consisting of only two temperatures instead of the conventional three and found suitable PCR component concentrations for successful detection of genetic variation under optimized PCR conditions by utilizing raw saliva. We also tested the PCR-compatibility of 23 kinds of common materials in microfluidics with a simple and newly developed method. Our results provide an overview of which the materials are most PCR-friendly for microfluidic device fabrication. Based on the previous experimental results, a device consisting of an interchangeable PCR chamber, a temperature control component as well as an optical detection system was constructed. The DNA amplification happens on an interchangeable chip with the volumes as low as 1.25 μl and the total time of only 25 minutes to complete the 35 cycle PCR amplification. Within the PCR chip, the amplification of male-specific SRY gene marker by utilizing raw saliva was successfully achieved and the genetic identification was in-situ detected right after PCR by the optical detection system. Finally, initial experiments of DNA detection in nanoslot were reported. We have captured the impedance shift of the nanoslot for DNA is present in solution.

Subjects/Keywords: Gene amplification ; Microfluidic devices ; Nanofluids

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Wu, J. (2011). DNA amplification and detection in micro/nano-fluidic chip. (Thesis). Hong Kong University of Science and Technology. Retrieved from http://repository.ust.hk/ir/Record/1783.1-7367 ; https://doi.org/10.14711/thesis-b1155121 ; http://repository.ust.hk/ir/bitstream/1783.1-7367/1/th_redirect.html

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

Chicago Manual of Style (16^th Edition):

Wu, Jinbo. “DNA amplification and detection in micro/nano-fluidic chip.” 2011. Thesis, Hong Kong University of Science and Technology. Accessed February 27, 2021. http://repository.ust.hk/ir/Record/1783.1-7367 ; https://doi.org/10.14711/thesis-b1155121 ; http://repository.ust.hk/ir/bitstream/1783.1-7367/1/th_redirect.html.

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

MLA Handbook (7^th Edition):

Wu, Jinbo. “DNA amplification and detection in micro/nano-fluidic chip.” 2011. Web. 27 Feb 2021.

Vancouver:

Wu J. DNA amplification and detection in micro/nano-fluidic chip. [Internet] [Thesis]. Hong Kong University of Science and Technology; 2011. [cited 2021 Feb 27]. Available from: http://repository.ust.hk/ir/Record/1783.1-7367 ; https://doi.org/10.14711/thesis-b1155121 ; http://repository.ust.hk/ir/bitstream/1783.1-7367/1/th_redirect.html.

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

Council of Science Editors:

Wu J. DNA amplification and detection in micro/nano-fluidic chip. [Thesis]. Hong Kong University of Science and Technology; 2011. Available from: http://repository.ust.hk/ir/Record/1783.1-7367 ; https://doi.org/10.14711/thesis-b1155121 ; http://repository.ust.hk/ir/bitstream/1783.1-7367/1/th_redirect.html

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

Hong Kong University of Science and Technology

17. Lee, Hau Him. Evaporation kinetics and residue pattern of nanofluid droplets.

Degree: 2015, Hong Kong University of Science and Technology

URL: http://repository.ust.hk/ir/Record/1783.1-78797 ; https://doi.org/10.14711/thesis-b1514576 ; http://repository.ust.hk/ir/bitstream/1783.1-78797/1/th_redirect.html

► Droplet evaporation is a common and natural phenomenon under an unsaturated vapor pressure. This process appears in many applications such as spray cooling, inkjet printing… (more)

▼ Droplet evaporation is a common and natural phenomenon under an unsaturated vapor pressure. This process appears in many applications such as spray cooling, inkjet printing and fuel combustion. Nanofluids are advanced fluids with thermophysical properties that are different from their base fluids. The thermophysical properties include thermal conductivity, viscosity and enthalpy of vaporization etc. Owing to the change of thermophysical properties, nanofluids are used in many applications such as heat transfer, automobiles and electronics. The evaporation kinetics directly influences the performance of the applications and the nanoparticle size affects the thermophysical properties and hence it changes the evaporation kinetics of the nanofluid. Researchers are interested to investigate how the particle size influences the evaporation kinetics of nanofluids of different concentrations. After evaporation, a residue pattern is left on a substrate which relates to the evaporation kinetics, particle size and concentration. Therefore, this study is about the evaporation kinetics and residue pattern of different particle sizes and concentrations. 9 nm, 13 nm, 20 nm, 80 nm and 135 nm diameters of Al2O3 particles suspended in water were investigated, experimentally, in relation to the evaporation kinetics. The sessile droplet was deposited on a stainless steel substrate. It was found that the evaporation kinetics of any concentrations of 9 nm and 13 nm, where are 0.14 and 0.18 respectively, are higher than those of 20 nm, 80 nm and 135 nm, where are around 0.12 to 0.13. The evaporation kinetics affects the residue pattern. From the results, the patterns can be classified into two types: (1) ring-shaped and (2) uniform. It is noted that concentrations below 1 vol% of 9 nm and 13 nm result in ring-shaped residue patterns while the patterns of concentrations above 1 vol% of 9 nm and 13 nm and any concentrations of 20 nm, 80 nm and 135 nm are uniform. The different pattern is because of the various internal flows of different particle size.

Subjects/Keywords: Nanofluids ; Drops ; Fluid dynamics ; Evaporation

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Lee, H. H. (2015). Evaporation kinetics and residue pattern of nanofluid droplets. (Thesis). Hong Kong University of Science and Technology. Retrieved from http://repository.ust.hk/ir/Record/1783.1-78797 ; https://doi.org/10.14711/thesis-b1514576 ; http://repository.ust.hk/ir/bitstream/1783.1-78797/1/th_redirect.html

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

Chicago Manual of Style (16^th Edition):

Lee, Hau Him. “Evaporation kinetics and residue pattern of nanofluid droplets.” 2015. Thesis, Hong Kong University of Science and Technology. Accessed February 27, 2021. http://repository.ust.hk/ir/Record/1783.1-78797 ; https://doi.org/10.14711/thesis-b1514576 ; http://repository.ust.hk/ir/bitstream/1783.1-78797/1/th_redirect.html.

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

MLA Handbook (7^th Edition):

Lee, Hau Him. “Evaporation kinetics and residue pattern of nanofluid droplets.” 2015. Web. 27 Feb 2021.

Vancouver:

Lee HH. Evaporation kinetics and residue pattern of nanofluid droplets. [Internet] [Thesis]. Hong Kong University of Science and Technology; 2015. [cited 2021 Feb 27]. Available from: http://repository.ust.hk/ir/Record/1783.1-78797 ; https://doi.org/10.14711/thesis-b1514576 ; http://repository.ust.hk/ir/bitstream/1783.1-78797/1/th_redirect.html.

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

Council of Science Editors:

Lee HH. Evaporation kinetics and residue pattern of nanofluid droplets. [Thesis]. Hong Kong University of Science and Technology; 2015. Available from: http://repository.ust.hk/ir/Record/1783.1-78797 ; https://doi.org/10.14711/thesis-b1514576 ; http://repository.ust.hk/ir/bitstream/1783.1-78797/1/th_redirect.html

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

Hong Kong University of Science and Technology

18. Yu, Miao. Single-molecule DNA analysis in nanofluidic devices.

Degree: 2015, Hong Kong University of Science and Technology

URL: http://repository.ust.hk/ir/Record/1783.1-81387 ; https://doi.org/10.14711/thesis-b1514590 ; http://repository.ust.hk/ir/bitstream/1783.1-81387/1/th_redirect.html

► DNA is the central storage molecule of genetic information in humans and almost all other organisms. Analyzing the genetic information along the DNA molecule is… (more)

▼ DNA is the central storage molecule of genetic information in humans and almost all other organisms. Analyzing the genetic information along the DNA molecule is of great importance in life science and biomedical engineering. Recently, nanofluidics has been recognized as an efficient approach to study the behavior of DNA at the single-molecular level, which can unravel the phenomena that remain hidden in conventional bulk experiments. When confined in nanochannels, the coiled DNA molecules naturally stretch out as a combined result of the elastic properties and the excluded volume effects. Therefore, a reliable nanofluidic platform is the prerequisite for single-molecule DNA studies. This thesis focuses on the development of sub-100 nm disposable nanofluidic devices and the experimental demonstration of such devices for biomolecular detection and analysis. We first investigated various techniques for fabricating low-cost nanochannels on different substrates. We showed that the lithography-free nanocracking on a polystyrene substrate is a promising approach for lab-on-chip nano-manufacturing. Based on such nanocracking technology, an on-demand nanofluidic pre-concentrator was developed, which leveraged isolated droplets to avoid the sample diffusion and dispersion issues as compared to conventional devices. To prevent concentration decay during the sample ejection, a pressure-assisted strategy was introduced in the system for precisely positioning the concentrated sample plug at the ejecting nozzle. By integrating the ion concentration polarization with on-demand droplet generation, our system can adaptively encapsulate the highly concentrated sample and effectively enhance the long-term stability. We experimentally demonstrated the pre-concentration of a fluorescently labelled biomolecule, bovine serum albumin (BSA), by an amplification factor of 10,000. By adjusting the applied voltage, accumulation time, and pulsed pressure imposed on the control microchannel, our system can generate a droplet of desired volume with a target sample concentration at a prescribed time. Second, we developed a novel nanofluidic device to confine and align single-molecule DNA in dynamically formed nanochannels for optical analysis. By judiciously harnessing the microvalve control and the deformation of nanoslits made in the PDMS, we dynamically generated submillimeter-long uniform nanochannels with an effective confining dimension down to 20 nm based on low-cost soft lithography. Using such devices, we investigated DNA stretching and attained 80% of the contour length for DNA elongation. The curved edge of the microvalve smoothly bridges the different depths between the stretching nanochannels and the adjoining microchannels by more than 3 orders of magnitude, which greatly facilitates the introduction of DNA into the nanochannels without the need for high pressure or electric fields. Unlike traditional direct-bonded nanochannels, the sample nanochannels in our device recover in microscale when the pressure is released, eliminating…

Subjects/Keywords: Nanofluids ; Microfluidic devices ; DNA ; Analysis

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Yu, M. (2015). Single-molecule DNA analysis in nanofluidic devices. (Thesis). Hong Kong University of Science and Technology. Retrieved from http://repository.ust.hk/ir/Record/1783.1-81387 ; https://doi.org/10.14711/thesis-b1514590 ; http://repository.ust.hk/ir/bitstream/1783.1-81387/1/th_redirect.html

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

Chicago Manual of Style (16^th Edition):

Yu, Miao. “Single-molecule DNA analysis in nanofluidic devices.” 2015. Thesis, Hong Kong University of Science and Technology. Accessed February 27, 2021. http://repository.ust.hk/ir/Record/1783.1-81387 ; https://doi.org/10.14711/thesis-b1514590 ; http://repository.ust.hk/ir/bitstream/1783.1-81387/1/th_redirect.html.

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

MLA Handbook (7^th Edition):

Yu, Miao. “Single-molecule DNA analysis in nanofluidic devices.” 2015. Web. 27 Feb 2021.

Vancouver:

Yu M. Single-molecule DNA analysis in nanofluidic devices. [Internet] [Thesis]. Hong Kong University of Science and Technology; 2015. [cited 2021 Feb 27]. Available from: http://repository.ust.hk/ir/Record/1783.1-81387 ; https://doi.org/10.14711/thesis-b1514590 ; http://repository.ust.hk/ir/bitstream/1783.1-81387/1/th_redirect.html.

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

Council of Science Editors:

Yu M. Single-molecule DNA analysis in nanofluidic devices. [Thesis]. Hong Kong University of Science and Technology; 2015. Available from: http://repository.ust.hk/ir/Record/1783.1-81387 ; https://doi.org/10.14711/thesis-b1514590 ; http://repository.ust.hk/ir/bitstream/1783.1-81387/1/th_redirect.html

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

Hong Kong University of Science and Technology

19. Li, Long. Experimental investigation of fluid flow in nanochannels.

Degree: 2016, Hong Kong University of Science and Technology

URL: http://repository.ust.hk/ir/Record/1783.1-86626 ; https://doi.org/10.14711/thesis-b1610789 ; http://repository.ust.hk/ir/bitstream/1783.1-86626/1/th_redirect.html

► Fluid flows at micro- and nanoscale are essential in integrated fluidic devices and micro total analysis systems such as Micro-/Nano-Electro-Mechanical Systems (MEMS/NEMS), which have tremendous… (more)

▼ Fluid flows at micro- and nanoscale are essential in integrated fluidic devices and micro total analysis systems such as Micro-/Nano-Electro-Mechanical Systems (MEMS/NEMS), which have tremendous applications in biology, medicine, chemistry and engineering. Nanoscale flows could be very different from macroscopic flows due to the high surface-area-to-volume ratio and complex molecular interactions. To promote the applications of nanoscale flows, extensive work is required to study the flows in nanoconfinements. The objectives of this thesis are to investigate the flow fashions and explore the applications of nanochannel flows through experiments. First, the Poiseuille flows in nanochannels are examined. Experimental results show that the flow rate undergoes a transition between two linear regimes as the shear rate is varied. The transition indicates that the nonslip boundary condition is valid at low shear rate. When the shear rate is larger than a critical value, slip takes place and the slip length increases linearly with increasing shear rate before approaching a constant value. Second, a nanofluidic diode for simple fluids without moving part is proposed and investigated by using heterogeneous nanochannels, half of which is hydrophilic and the other half is hydrophobic. The device accepts water flows in the direction from hydrophilic to hydrophobic, while the flows in the other direction are blocked for pressure drop range between 0 and 0.63 MPa. As the upstream pressure becomes higher than 0.63 MPa, the fluidic diode turns to be a rectifier, which allows flows in both directions but with different flow rates. At sufficient high driving pressure, the fluidic system fails in flow rectification, analogous to the breakdown of electro diodes. Finally, a waste heat driven self-adaptive cooling system based on heterogeneous nanochannels is fabricated and studied. It is found that continuous coolant flux from the hydrophilic side to the hydrophobic side can be generated under symmetric temperature gradients. Linear dependence of volumetric flux on the temperature gradient is observed. The mechanism of flow behaviors is evaluated through the coupling effects of temperature gradient and fluid-surface interaction.

Subjects/Keywords: Nanofluids ; Hydrodynamics ; Fluid mechanics

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Li, L. (2016). Experimental investigation of fluid flow in nanochannels. (Thesis). Hong Kong University of Science and Technology. Retrieved from http://repository.ust.hk/ir/Record/1783.1-86626 ; https://doi.org/10.14711/thesis-b1610789 ; http://repository.ust.hk/ir/bitstream/1783.1-86626/1/th_redirect.html

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

Chicago Manual of Style (16^th Edition):

Li, Long. “Experimental investigation of fluid flow in nanochannels.” 2016. Thesis, Hong Kong University of Science and Technology. Accessed February 27, 2021. http://repository.ust.hk/ir/Record/1783.1-86626 ; https://doi.org/10.14711/thesis-b1610789 ; http://repository.ust.hk/ir/bitstream/1783.1-86626/1/th_redirect.html.

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

MLA Handbook (7^th Edition):

Li, Long. “Experimental investigation of fluid flow in nanochannels.” 2016. Web. 27 Feb 2021.

Vancouver:

Li L. Experimental investigation of fluid flow in nanochannels. [Internet] [Thesis]. Hong Kong University of Science and Technology; 2016. [cited 2021 Feb 27]. Available from: http://repository.ust.hk/ir/Record/1783.1-86626 ; https://doi.org/10.14711/thesis-b1610789 ; http://repository.ust.hk/ir/bitstream/1783.1-86626/1/th_redirect.html.

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

Council of Science Editors:

Li L. Experimental investigation of fluid flow in nanochannels. [Thesis]. Hong Kong University of Science and Technology; 2016. Available from: http://repository.ust.hk/ir/Record/1783.1-86626 ; https://doi.org/10.14711/thesis-b1610789 ; http://repository.ust.hk/ir/bitstream/1783.1-86626/1/th_redirect.html

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

Hong Kong University of Science and Technology

20. Liu, Yifan ECE. Integrated nanoelectrofluidic systems for biomolecular analysis.

Degree: 2016, Hong Kong University of Science and Technology

URL: http://repository.ust.hk/ir/Record/1783.1-88917 ; https://doi.org/10.14711/thesis-b1584854 ; http://repository.ust.hk/ir/bitstream/1783.1-88917/1/th_redirect.html

► The past decades have witnessed the remarkable development of nanofluidics and its widespread applications in chemical and biomedical research. Nanochannels, typically having at least one… (more)

Subjects/Keywords: Nanofluids ; Nanoelectronics ; Biomolecules ; Analysis

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Liu, Y. E. (2016). Integrated nanoelectrofluidic systems for biomolecular analysis. (Thesis). Hong Kong University of Science and Technology. Retrieved from http://repository.ust.hk/ir/Record/1783.1-88917 ; https://doi.org/10.14711/thesis-b1584854 ; http://repository.ust.hk/ir/bitstream/1783.1-88917/1/th_redirect.html

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

Chicago Manual of Style (16^th Edition):

Liu, Yifan ECE. “Integrated nanoelectrofluidic systems for biomolecular analysis.” 2016. Thesis, Hong Kong University of Science and Technology. Accessed February 27, 2021. http://repository.ust.hk/ir/Record/1783.1-88917 ; https://doi.org/10.14711/thesis-b1584854 ; http://repository.ust.hk/ir/bitstream/1783.1-88917/1/th_redirect.html.

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

MLA Handbook (7^th Edition):

Liu, Yifan ECE. “Integrated nanoelectrofluidic systems for biomolecular analysis.” 2016. Web. 27 Feb 2021.

Vancouver:

Liu YE. Integrated nanoelectrofluidic systems for biomolecular analysis. [Internet] [Thesis]. Hong Kong University of Science and Technology; 2016. [cited 2021 Feb 27]. Available from: http://repository.ust.hk/ir/Record/1783.1-88917 ; https://doi.org/10.14711/thesis-b1584854 ; http://repository.ust.hk/ir/bitstream/1783.1-88917/1/th_redirect.html.

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

Council of Science Editors:

Liu YE. Integrated nanoelectrofluidic systems for biomolecular analysis. [Thesis]. Hong Kong University of Science and Technology; 2016. Available from: http://repository.ust.hk/ir/Record/1783.1-88917 ; https://doi.org/10.14711/thesis-b1584854 ; http://repository.ust.hk/ir/bitstream/1783.1-88917/1/th_redirect.html

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

Hong Kong University of Science and Technology

21. Duan, Lian ECE. Nanocapillary and nanopore array integrated through low-resolution patterning techniques for biomolecular analysis.

Degree: 2018, Hong Kong University of Science and Technology

URL: http://repository.ust.hk/ir/Record/1783.1-92253 ; https://doi.org/10.14711/thesis-991012588465103412 ; http://repository.ust.hk/ir/bitstream/1783.1-92253/1/th_redirect.html

► The analysis of nucleic acids and proteins is of great significance in genomics, proteomics, and clinical diagnostics. The past decades have witnessed the booming development… (more)

▼ The analysis of nucleic acids and proteins is of great significance in genomics, proteomics, and clinical diagnostics. The past decades have witnessed the booming development of nanofluidic devices, which have outperformed traditional diagnostic and analysis techniques in terms of accuracy, sensitivity, efficiency, and sample consumption. Nanofluidic channels (capillaries) featuring critical dimensions comparable to those of biomolecules provide alternative routes to the manipulation and detection of such species, in an attempt to develop the micro total analysis system (μ-TAS). This thesis describes the development of monolithically integrated, robust, and cost-effective glass nanocapillaries and nanopores that can be utilized for the separation and detection of biomolecules. First, the integrated glass nanocapillaries featuring distinct cross-sectional profiles are demonstrated for different chromatographic modes, including normal phase, ion-valance, reverse phase, and hydrodynamic liquid chromatograph. The minimum plate heights achieved are typically below 2 μm and the theoretical plate numbers are in the order of 10⁵ plates/m for most chromatography modes investigated in the pressure range up to 100 psi. Second, an on-chip hydrodynamic chromatography of DNA fragments is demonstrated, based on centimeters-long glass nanocapillaries that are essential for resolving DNA in this chromatography mode. The microchip can rapidly separate a digest of Lambda-phage DNA in free solution (< 5 min under the elution pressure of 60 psi to 120 psi) and the number of theoretical plates exceeds 10⁵ plates per meter for 3.5- and 21-kbp-long DNA fragments. Third, continuous-flow electrophoresis of macromolecules is presented using an integrated capillary-well sieve arranged into a two-dimensional anisotropic array on silicon. The periodic array features thousands of entropic barriers, each resulting from an abrupt interface between a 2-μm-deep well (channel) and a 70-nm capillary. The baseline separation is achieved in less than 1 min within a horizontal migration length of ~1.5 mm. Last, a monolithically integrated nanofluidic diode biosensor featuring a highly regular pore diameter of ~50 nm is demonstrated for multiplexed detection of low-abundance specific biomarkers presented in both electrolyte buffer and human serum. The nanopore diode exhibits a comparable rectification behavior to that of a nanoslit but it can achieve an order of magnitude lower detection limit for cardiac troponin T (~ 1 fg/mL). This nanopore biosensor can multiplex detect various biomarkers, including Alpha-fetoprotein, Carcinoembryonic Antigen, and Human Epidermal growth factor Receptor 2 within human serum and therefore provide accurate information for the early diagnosis of cancer. Further applications of such nanopore arrays are also proposed, including a fast and high-throughput DNA sequence, and novel power generators relying on the osmotic pressure gradient.

Subjects/Keywords: Nanofluids ; Nanopores ; Biomolecules ; Analysis

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Duan, L. E. (2018). Nanocapillary and nanopore array integrated through low-resolution patterning techniques for biomolecular analysis. (Thesis). Hong Kong University of Science and Technology. Retrieved from http://repository.ust.hk/ir/Record/1783.1-92253 ; https://doi.org/10.14711/thesis-991012588465103412 ; http://repository.ust.hk/ir/bitstream/1783.1-92253/1/th_redirect.html

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

Chicago Manual of Style (16^th Edition):

Duan, Lian ECE. “Nanocapillary and nanopore array integrated through low-resolution patterning techniques for biomolecular analysis.” 2018. Thesis, Hong Kong University of Science and Technology. Accessed February 27, 2021. http://repository.ust.hk/ir/Record/1783.1-92253 ; https://doi.org/10.14711/thesis-991012588465103412 ; http://repository.ust.hk/ir/bitstream/1783.1-92253/1/th_redirect.html.

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

MLA Handbook (7^th Edition):

Duan, Lian ECE. “Nanocapillary and nanopore array integrated through low-resolution patterning techniques for biomolecular analysis.” 2018. Web. 27 Feb 2021.

Vancouver:

Duan LE. Nanocapillary and nanopore array integrated through low-resolution patterning techniques for biomolecular analysis. [Internet] [Thesis]. Hong Kong University of Science and Technology; 2018. [cited 2021 Feb 27]. Available from: http://repository.ust.hk/ir/Record/1783.1-92253 ; https://doi.org/10.14711/thesis-991012588465103412 ; http://repository.ust.hk/ir/bitstream/1783.1-92253/1/th_redirect.html.

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

Council of Science Editors:

Duan LE. Nanocapillary and nanopore array integrated through low-resolution patterning techniques for biomolecular analysis. [Thesis]. Hong Kong University of Science and Technology; 2018. Available from: http://repository.ust.hk/ir/Record/1783.1-92253 ; https://doi.org/10.14711/thesis-991012588465103412 ; http://repository.ust.hk/ir/bitstream/1783.1-92253/1/th_redirect.html

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

Hong Kong University of Science and Technology

22. Fong, Yick Sau MAE. Evaporation of nanofluid in a microgrooved evaporator.

Degree: 2016, Hong Kong University of Science and Technology

URL: http://repository.ust.hk/ir/Record/1783.1-94428 ; https://doi.org/10.14711/thesis-b1585095 ; http://repository.ust.hk/ir/bitstream/1783.1-94428/1/th_redirect.html

► The study of Nanofluids is an emerging field of research in the past decade. Nanofluid is a mixture of liquid and solid phase nanosized particles… (more)

▼ The study of Nanofluids is an emerging field of research in the past decade. Nanofluid is a mixture of liquid and solid phase nanosized particles which have shown high thermal properties compared to the base fluid. Many researches have shown that nanofluids have improved thermal properties such as thermal conductivity compared with the base fluid, and these findings have led many researchers to look for the potential of applying Nanofluids in existing thermal systems. With microgrooves being a good method to increase the surface area for heat transfer, nanofluids and microgrooves may be used together to improve the performance of a cooling system. This thesis aims to study the stability of nanofluids and the effect of a microgrooved surface on evaporation of nanofluids. The most common way to prepare nanofluid is by two-step method which disperses dry nanoparticles in a base fluid. However, ultrasonication is needed to break down large clusters in order to produce a stable nanofluid. Experiments have been conducted to investigate the effect of ultrasonic time on the stability of nanofluids. An optimal duration of 1 hour ultrasonication has been identified and the pH value of a nanofluid without a surfactant can remain at a stable level for 5 hours. Microgroove is an opened channel with a dimension in micrometers. Liquid will be drawn into microgroove due to the presence of capillary pressure when immersed in liquid. The extended meniscus formed in a microgroove offers an increased surface area for evaporation. Experiment has been conducted to investigate the effect of a microgrooved surface on the evaporation rate of water and nanofluids under different environmental conditions. Results show that a microgrooved evaporator using water as the coolant offers an enhancement in the evaporation rate as large as 21.4% compared with the evaporator without microgrooves. By using 0.5 vol% Al₂O₃ nanofluid as a coolant, a further 44.6% improvement has been found. Microgroove evaporator and nanofluid could be used in different cooling system such as cooling tower.

Subjects/Keywords: Nanofluids ; Thermal properties ; Evaporators

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Fong, Y. S. M. (2016). Evaporation of nanofluid in a microgrooved evaporator. (Thesis). Hong Kong University of Science and Technology. Retrieved from http://repository.ust.hk/ir/Record/1783.1-94428 ; https://doi.org/10.14711/thesis-b1585095 ; http://repository.ust.hk/ir/bitstream/1783.1-94428/1/th_redirect.html

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

Chicago Manual of Style (16^th Edition):

Fong, Yick Sau MAE. “Evaporation of nanofluid in a microgrooved evaporator.” 2016. Thesis, Hong Kong University of Science and Technology. Accessed February 27, 2021. http://repository.ust.hk/ir/Record/1783.1-94428 ; https://doi.org/10.14711/thesis-b1585095 ; http://repository.ust.hk/ir/bitstream/1783.1-94428/1/th_redirect.html.

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

MLA Handbook (7^th Edition):

Fong, Yick Sau MAE. “Evaporation of nanofluid in a microgrooved evaporator.” 2016. Web. 27 Feb 2021.

Vancouver:

Fong YSM. Evaporation of nanofluid in a microgrooved evaporator. [Internet] [Thesis]. Hong Kong University of Science and Technology; 2016. [cited 2021 Feb 27]. Available from: http://repository.ust.hk/ir/Record/1783.1-94428 ; https://doi.org/10.14711/thesis-b1585095 ; http://repository.ust.hk/ir/bitstream/1783.1-94428/1/th_redirect.html.

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

Council of Science Editors:

Fong YSM. Evaporation of nanofluid in a microgrooved evaporator. [Thesis]. Hong Kong University of Science and Technology; 2016. Available from: http://repository.ust.hk/ir/Record/1783.1-94428 ; https://doi.org/10.14711/thesis-b1585095 ; http://repository.ust.hk/ir/bitstream/1783.1-94428/1/th_redirect.html

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

Hong Kong University of Science and Technology

23. Zhang, Mengying. Nano/micro particle based microfluidic droplet manipulation and application.

Degree: 2011, Hong Kong University of Science and Technology

URL: http://repository.ust.hk/ir/Record/1783.1-7365 ; https://doi.org/10.14711/thesis-b1155106 ; http://repository.ust.hk/ir/bitstream/1783.1-7365/1/th_redirect.html

► Droplet microfluidics is a rapid developing research area, which has great promising application in lab-on-a-chip, point-of-care diagnostic and et al. In this thesis, micro/nano particles… (more)

▼ Droplet microfluidics is a rapid developing research area, which has great promising application in lab-on-a-chip, point-of-care diagnostic and et al. In this thesis, micro/nano particles are introduced into droplet microfluidic chips for droplet generation, manipulation and application. They could be categorized in three types: magnetic nano particles(Fe3O4, Ni carbonyl iron), conductive micro/nano particles (Ag micro platelets and Carbon Black) and dielectric particles (giant electrorheological nano particles). Mono-dispersed magnetic micro spheres are prepared and their deformation under magnetic field is calibrated. Magnetically responded membrane is fabricated from magnetic elastomer CI-PDMS. Optimized ratio of CI/PDMS is found to be 2, and high efficiency micromixer is achieved by integrated the magnetic membrane into PDMS microfluidic chip. Then, structured AgPDMS pattern is integrated in microfluidic droplet detection chip as parallel electrodes and on-chip conducting wires. Connected with external detection circuit and Labview software, droplets could be detected and sorting according to their capacitance difference. Furthermore, GER fluids are injected into microfluidic channels, with the help of conducting component, 'smart' droplet generation and manipulation, as well as a universal droplet logic gate microfluidic chip is achieved, which shows the possibility of droplet communication and automatically control. Droplets could be coded, guided and stored, different logic functions could be conducted in one chip while varying the combination of applied voltages. What‘s more, droplet microfludic is also used in cell encapsulation for single cell manipulation (e.g. electroporation) to demonstrated application of droplet microfluidics. Some improvement in PDMS chip fabrication is presented for simplifying the fabrication of integrated multi-function microfluidic chips. All of these researches reveal the advantages of adoption of mircro/nano particles into droplet microfluidics: more control methods, more functionality and more automatically.

Subjects/Keywords: Microfluidic devices ; Nanofluids ; Drops

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Zhang, M. (2011). Nano/micro particle based microfluidic droplet manipulation and application. (Thesis). Hong Kong University of Science and Technology. Retrieved from http://repository.ust.hk/ir/Record/1783.1-7365 ; https://doi.org/10.14711/thesis-b1155106 ; http://repository.ust.hk/ir/bitstream/1783.1-7365/1/th_redirect.html

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

Chicago Manual of Style (16^th Edition):

Zhang, Mengying. “Nano/micro particle based microfluidic droplet manipulation and application.” 2011. Thesis, Hong Kong University of Science and Technology. Accessed February 27, 2021. http://repository.ust.hk/ir/Record/1783.1-7365 ; https://doi.org/10.14711/thesis-b1155106 ; http://repository.ust.hk/ir/bitstream/1783.1-7365/1/th_redirect.html.

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

MLA Handbook (7^th Edition):

Zhang, Mengying. “Nano/micro particle based microfluidic droplet manipulation and application.” 2011. Web. 27 Feb 2021.

Vancouver:

Zhang M. Nano/micro particle based microfluidic droplet manipulation and application. [Internet] [Thesis]. Hong Kong University of Science and Technology; 2011. [cited 2021 Feb 27]. Available from: http://repository.ust.hk/ir/Record/1783.1-7365 ; https://doi.org/10.14711/thesis-b1155106 ; http://repository.ust.hk/ir/bitstream/1783.1-7365/1/th_redirect.html.

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

Council of Science Editors:

Zhang M. Nano/micro particle based microfluidic droplet manipulation and application. [Thesis]. Hong Kong University of Science and Technology; 2011. Available from: http://repository.ust.hk/ir/Record/1783.1-7365 ; https://doi.org/10.14711/thesis-b1155106 ; http://repository.ust.hk/ir/bitstream/1783.1-7365/1/th_redirect.html

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

Hong Kong University of Science and Technology

24. Ahmed, Zisun SENG. Ion concentration polarization based on 1-D nanocapillaries.

Degree: 2019, Hong Kong University of Science and Technology

URL: http://repository.ust.hk/ir/Record/1783.1-101610 ; https://doi.org/10.14711/thesis-991012753759803412 ; http://repository.ust.hk/ir/bitstream/1783.1-101610/1/th_redirect.html

► Nanometer-scale fluidic channels have drawn tremendous research attention in recent years due to their unique electrokinetic properties and immense potential for developing novel applications. Surface… (more)

▼ Nanometer-scale fluidic channels have drawn tremendous research attention in recent years due to their unique electrokinetic properties and immense potential for developing novel applications. Surface charge induced electric double layer (EDL) has been demonstrated to regulate ion transport in nanochannel, especially at low ionic strength. Beyond a certain threshold concentration of electrolyte, nanofluidic channels have been reported to become ion-perm selective and causes an unusual phenomenon known as ion concentration polarization (ICP). The exclusive physical properties of ICP, nonlinear current-voltage (I-V) characteristics being the most significant one, have been extensively studied in nanoslots. However, there is a distinct lack of studies on characterization of ICP in nanochannels imposing higher degree of confinement, such as nanocapillaries and nanopores, also known as one dimensional (1-D) channels. This thesis presents an elaborate study of ion concentration polarization in self-enclosed cylindrical glass nanocapillaries, with a nominal diameter of 70 nm, realized through a unique process involving low resolution photolithography and standard fabrication techniques. First, numerical simulation has been conducted to evaluate the effect of surface conduction in ICP and the results indicate that a high surface charge density in the channel walls can obscure limiting current region from the I-V characteristics. Later, a microfluidic platform was designed and fabricated with varying physical parameters, such as inter-capillary separation and capillary array size. The results obtained from a single capillary device showed linear I-V characteristics for lower ionic strengths (≤10 mM), which may indicate the masking of limiting current due to strong surface conduction. The results also showed the inter-capillary separation to modulate the onset-voltage of limiting current regime in the I-V characteristics. Additionally, results obtained from high concentration KCl (≥100 mM) revealed ICP to appear without the presence of perm-selectivity in the nanochannel. Finally, a highly efficient microfluidic sample preconcentration device utilizing electrokinetic trapping mechanism enabled by the permselective glass nanocapillaries is presented in this report, which has achieved concentration factor as high as 10⁶ in less than 50 minutes.

Subjects/Keywords: Polarization (Electricity) ; Electrolytes ; Electrochemistry ; Nanofluids

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Ahmed, Z. S. (2019). Ion concentration polarization based on 1-D nanocapillaries. (Thesis). Hong Kong University of Science and Technology. Retrieved from http://repository.ust.hk/ir/Record/1783.1-101610 ; https://doi.org/10.14711/thesis-991012753759803412 ; http://repository.ust.hk/ir/bitstream/1783.1-101610/1/th_redirect.html

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

Chicago Manual of Style (16^th Edition):

Ahmed, Zisun SENG. “Ion concentration polarization based on 1-D nanocapillaries.” 2019. Thesis, Hong Kong University of Science and Technology. Accessed February 27, 2021. http://repository.ust.hk/ir/Record/1783.1-101610 ; https://doi.org/10.14711/thesis-991012753759803412 ; http://repository.ust.hk/ir/bitstream/1783.1-101610/1/th_redirect.html.

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

MLA Handbook (7^th Edition):

Ahmed, Zisun SENG. “Ion concentration polarization based on 1-D nanocapillaries.” 2019. Web. 27 Feb 2021.

Vancouver:

Ahmed ZS. Ion concentration polarization based on 1-D nanocapillaries. [Internet] [Thesis]. Hong Kong University of Science and Technology; 2019. [cited 2021 Feb 27]. Available from: http://repository.ust.hk/ir/Record/1783.1-101610 ; https://doi.org/10.14711/thesis-991012753759803412 ; http://repository.ust.hk/ir/bitstream/1783.1-101610/1/th_redirect.html.

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

Council of Science Editors:

Ahmed ZS. Ion concentration polarization based on 1-D nanocapillaries. [Thesis]. Hong Kong University of Science and Technology; 2019. Available from: http://repository.ust.hk/ir/Record/1783.1-101610 ; https://doi.org/10.14711/thesis-991012753759803412 ; http://repository.ust.hk/ir/bitstream/1783.1-101610/1/th_redirect.html

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

University of KwaZulu-Natal

25. Adewumi, Gloria Adedayo. Investigation of the thermophysical properties of coconut fibre based green nanofluid for heat transfer applications.

Degree: 2018, University of KwaZulu-Natal

URL: https://researchspace.ukzn.ac.za/handle/10413/17945

► Significant resources are being channelled toward research on carbon nanomaterials obtained from biomass precursors because of their overall environmental acceptability, stability, low toxicity and simplistic… (more)

▼ Significant resources are being channelled toward research on carbon nanomaterials obtained from biomass precursors because of their overall environmental acceptability, stability, low toxicity and simplistic use. Due to their unique nature, they have excellent thermo-physical properties which include improved thermal conductivity, electrical conductivity and viscosity. In this study, carbon nanotubes and nanospheres were successfully synthesized from coconut fibre activated carbon. The biomass was first carbonized, then physically activated followed by treatment using ethanol vapor at 700 °C to 1100 °C at 100 °C intervals. The effect of synthesis temperature on the formation of the nanomaterials was studied using scanning electron microscope (SEM), transmission electron microscope (TEM), energy dispersive X-ray powder diffraction (XRD), Fourier transform infrared microscopy (FTIR) and thermo-gravimetric analysis (TGA). SEM analysis revealed nanospheres were formed at higher temperatures of 1000 °C and 1100 °C, while lower temperatures of 800 °C and 900 °C favoured the growth of carbon nanotubes. At 700 °C however, no tubes or spheres were formed. TEM and FTIR were used to observe spectral features, such as the peak positions, intensity and bandwidth which are linked to some structural properties of the samples investigated. All these provided facts on the nanosphere and nanotube dimensions, vibrational modes and the degree of purity of the obtained samples. In general, the TEM results showed spheres of diameter in the range 30 nm to 250 nm while the tubes had diameters between 50 nm to 100 nm. XRD analysis revealed that the materials synthesized were amorphous in nature with a hexagonal graphite structure. Experimental measurements of the thermal conductivity, electrical conductivity and viscosity of the synthesized nanomaterials dispersed in 60%:40% ethylene glycol (EG) and water (W) nanofluids containing gum arabic (GA) were performed, considering the effects of temperature and mass fraction. Stability testing of the nanofluids were determined by zeta potential, viscosity and UV spectroscopy measurements of nanofluids for 720 minutes. The green nanofluids prepared were observed to very stable for more than 720 minutes. Also the results of experiments showed that the addition of nanomaterials to the base fluid increased the viscosity and that with the increase in temperature, the viscosity decreased while the electrical conductivity improved when compared to the base fluid. On the other hand, the thermal conductivity results were observed to decrease with the addition of nanoparticles. This decrease observed has been attributed to high thermal boundary resistance, ratio of surfactant and inconsistent size of the nanoparticles. Advisors/Committee Members: Inambao, Freddie Liswaniso. (advisor).

Subjects/Keywords: Carbon nanomaterials.; Coconut fibre activated carbon.; Nanofluids.; Thermal conductivity.; Green nanofluids.

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Adewumi, G. A. (2018). Investigation of the thermophysical properties of coconut fibre based green nanofluid for heat transfer applications. (Thesis). University of KwaZulu-Natal. Retrieved from https://researchspace.ukzn.ac.za/handle/10413/17945

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):

Adewumi, Gloria Adedayo. “Investigation of the thermophysical properties of coconut fibre based green nanofluid for heat transfer applications.” 2018. Thesis, University of KwaZulu-Natal. Accessed February 27, 2021. https://researchspace.ukzn.ac.za/handle/10413/17945.

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

MLA Handbook (7^th Edition):

Adewumi, Gloria Adedayo. “Investigation of the thermophysical properties of coconut fibre based green nanofluid for heat transfer applications.” 2018. Web. 27 Feb 2021.

Vancouver:

Adewumi GA. Investigation of the thermophysical properties of coconut fibre based green nanofluid for heat transfer applications. [Internet] [Thesis]. University of KwaZulu-Natal; 2018. [cited 2021 Feb 27]. Available from: https://researchspace.ukzn.ac.za/handle/10413/17945.

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

Council of Science Editors:

Adewumi GA. Investigation of the thermophysical properties of coconut fibre based green nanofluid for heat transfer applications. [Thesis]. University of KwaZulu-Natal; 2018. Available from: https://researchspace.ukzn.ac.za/handle/10413/17945

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

University of KwaZulu-Natal

26. Almakki, Mohammed Hassan Mohammed. A numerical study of entropy generation, heat and mass transfer in boundary layer flows.

Degree: 2018, University of KwaZulu-Natal

URL: https://researchspace.ukzn.ac.za/handle/10413/18175

► This study lies at the interface between mathematical modelling of fluid flows and numerical methods for differential equations. It is an investigation, through modelling techniques,… (more)

▼ This study lies at the interface between mathematical modelling of fluid flows and numerical methods for differential equations. It is an investigation, through modelling techniques, of entropy generation in Newtonian and non-Newtonian fluid flows with special focus on nanofluids. We seek to enhance our current understanding of entropy generation mechanisms in fluid flows by investigating the impact of a range of physical and chemical parameters on entropy generation in fluid flows under different geometrical settings and various boundary conditions. We therefore seek to analyse and quantify the contribution of each source of irreversibilities on the total entropy generation. Nanofluids have gained increasing academic and practical importance with uses in many industrial and engineering applications. Entropy generation is also a key factor responsible for energy losses in thermal and engineering systems. Thus minimizing entropy generation is important in optimizing the thermodynamic performance of engineering systems. The entropy generation is analysed through modelling the flow of the fluids of interest using systems of differential equations with high nonlinearity. These equations provide an accurate mathematical description of the fluid flows with various boundary conditions and in different geometries. Due to the complexity of the systems, closed form solutions are not available, and so recent spectral schemes are used to solve the equations. The methods of interest are the spectral relaxation method, spectral quasilinearization method, spectral local linearization method and the bivariate spectral quasilinearization method. In using these methods, we also check and confirm various aspects such as the accuracy, convergence, computational burden and the ease of deployment of the method. The numerical solutions provide useful insights about the physical and chemical characteristics of nanofluids. Additionally, the numerical solutions give insights into the sources of irreversibilities that increases entropy generation and the disorder of the systems leading to energy loss and thermodynamic imperfection. In Chapters 2 and 3 we investigate entropy generation in unsteady fluid flows described by partial differential equations. The partial differential equations are reduced to ordinary differential equations and solved numerically using the spectral quasilinearization method and the bivariate spectral quasilinearization method. In the subsequent chapters we study entropy generation in steady fluid flows that are described using ordinary differential equations. The differential equations are solved numerically using the spectral quasilinearization and the spectral local linearization methods. Advisors/Committee Members: Sibanda, Precious. (advisor).

Subjects/Keywords: Fluid flows.; Entropy generation.; Nanofluids.; Differential equations.; Irreversabilities.; Non-Newtonian nanofluids.

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Almakki, M. H. M. (2018). A numerical study of entropy generation, heat and mass transfer in boundary layer flows. (Thesis). University of KwaZulu-Natal. Retrieved from https://researchspace.ukzn.ac.za/handle/10413/18175

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):

Almakki, Mohammed Hassan Mohammed. “A numerical study of entropy generation, heat and mass transfer in boundary layer flows.” 2018. Thesis, University of KwaZulu-Natal. Accessed February 27, 2021. https://researchspace.ukzn.ac.za/handle/10413/18175.

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

MLA Handbook (7^th Edition):

Almakki, Mohammed Hassan Mohammed. “A numerical study of entropy generation, heat and mass transfer in boundary layer flows.” 2018. Web. 27 Feb 2021.

Vancouver:

Almakki MHM. A numerical study of entropy generation, heat and mass transfer in boundary layer flows. [Internet] [Thesis]. University of KwaZulu-Natal; 2018. [cited 2021 Feb 27]. Available from: https://researchspace.ukzn.ac.za/handle/10413/18175.

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

Council of Science Editors:

Almakki MHM. A numerical study of entropy generation, heat and mass transfer in boundary layer flows. [Thesis]. University of KwaZulu-Natal; 2018. Available from: https://researchspace.ukzn.ac.za/handle/10413/18175

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

Utah State University

27. Anderson, Lucas Samuel. Effective Thermal Conductivity of Carbon Nanotube-Based Cryogenic Nanofluids.

Degree: MS, Mechanical and Aerospace Engineering, 2013, Utah State University

URL: https://digitalcommons.usu.edu/etd/1753

► Nanofluids consist of nanometer-sized particles or fibers in colloidal suspension within a host fluid. They have been studied extensively since their creation due to… (more)

▼ Nanofluids consist of nanometer-sized particles or fibers in colloidal suspension within a host fluid. They have been studied extensively since their creation due to their often times anomalous and unique thermal transport characteristics. They have also proven to be quite valuable in terms of the scientific knowledge gained from their study and their nearly unlimited industrial and commercial applications. This research has expanded the science of nanofluids into a previously unexplored field, that of cryogenic nanofluids. Cryogenic nanofluids are similar to traditional nanofluids in that they utilize nanometer-sized inclusion particles; however, they use cryogenic fluids as their host liquids. Cryogenic nanofluids are of great interest due to the fact that they combine the extreme temperatures inherent to cryogenics with the customizable thermal transport properties of nanofluids, thus creating the potential for next generation cryogenic fluids with enhanced thermophysical properties. This research demonstrates that by combining liquid oxygen (LOX) with Multi-Walled Carbon Nanotube (MWCNT) inclusion particles, effective thermal conductivity enhancements of greater than 30% are possible with nanoparticle volume fractions below 0.1%. Three distinct cryogenic nanofluids were created for the purposes of this research, each of which varied by inclusion particle type. The MWCNT's used in this research varied in a number of physical characteristics, the most obvious of which are length and diameter. Lengths vary from 0.5 to 90 microns and diameters from 8 to 40 nanometers. The effective thermal conductivity of the various cryogenic nanofluids created for this research were experimentally determined by a custom made Transient Hot Wire (THW) system, and compared to each other and to more traditional nanofluids as they vary by type and particle volume fraction. This work also details the extensive theoretical, experimental, and numerical aspects of this research, including a rather detailed literature review of many of the salient sciences involved in the study of cryogenic nanofluids. Finally, a selection of the leading theories, models, and predictive equations is presented along with a review of some of the potential future work in the newly budding field of cryogenic nanofluids. Advisors/Committee Members: Heng Ban, Byard Wood, Christine Hailey, ;.

Subjects/Keywords: Carbon Nanotube; cryogenic; cryogenic nanofluids; effective thermal conductivity; nanofluids; Engineering

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Anderson, L. S. (2013). Effective Thermal Conductivity of Carbon Nanotube-Based Cryogenic Nanofluids. (Masters Thesis). Utah State University. Retrieved from https://digitalcommons.usu.edu/etd/1753

Chicago Manual of Style (16^th Edition):

Anderson, Lucas Samuel. “Effective Thermal Conductivity of Carbon Nanotube-Based Cryogenic Nanofluids.” 2013. Masters Thesis, Utah State University. Accessed February 27, 2021. https://digitalcommons.usu.edu/etd/1753.

MLA Handbook (7^th Edition):

Anderson, Lucas Samuel. “Effective Thermal Conductivity of Carbon Nanotube-Based Cryogenic Nanofluids.” 2013. Web. 27 Feb 2021.

Vancouver:

Anderson LS. Effective Thermal Conductivity of Carbon Nanotube-Based Cryogenic Nanofluids. [Internet] [Masters thesis]. Utah State University; 2013. [cited 2021 Feb 27]. Available from: https://digitalcommons.usu.edu/etd/1753.

Council of Science Editors:

Anderson LS. Effective Thermal Conductivity of Carbon Nanotube-Based Cryogenic Nanofluids. [Masters Thesis]. Utah State University; 2013. Available from: https://digitalcommons.usu.edu/etd/1753

University of Manchester

28. Oster, Kamil. Ionic Liquid - Based Nanofluids for Thermal Application.

Degree: 2018, University of Manchester

URL: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:316874

►

Heat transfer fluids are materials responsible for heat distribution, transfer and storage. Their significance is undeniable - many technological processes cannot be carried out without… (more)

▼

Heat transfer fluids are materials responsible for heat distribution, transfer and storage. Their significance is undeniable - many technological processes cannot be carried out without using heat transfer materials (for example due to overheating). These are usually mixtures of many compounds, for example glycols, silicones or water. Today's technologies constantly require more efficient, environmentally- and economically-friendly solutions for heat transfer applications. It is necessary to know the full physicochemical characteristics to design a new heat transfer fluid (mainly density, heat capacity, viscosity and thermal conductivity). Nanofluids (mixture of a basefluid and nanoparticles) were proposed as a solution for many industrial issues due to their enhanced thermophysical properties (i.e. thermal conductivity) than pure liquids. Moreover, these enhancements exhibit unusual features which make this group of materials interesting from molecular and industrial point of view. Ionic liquids, task specific materials with tuneable properties were repeatedly recommended as heat transfer fluids due to their specific properties (mainly low vapour pressure, wide liquidus range, or non-flammability) caused by the ionic structure. A very interesting material can be obtained by mixing ionic liquids and nanoparticles where specific properties of ionic liquids are preserved, and thermophysical properties are enhanced due to nanoparticles dispersion. In this work, we investigated ionic liquid - based nanofluids from the experimental and theoretical point of view, including imidazolium-, pyrrolidinium- and phosphonium-based ionic liquids with several different anions, and multiwalled carbon nanotubes, graphite, boron nitride and mesoporous carbon as nanoparticles, and also in mixtures with water. As a final result, we assessed the molecular recognition of the thermophysical properties enhancements in ionanofluids, developed the predictive models for physical properties, compared all investigated systems to commercial heat transfer fluids. The project was supported by King Faisal University (Saudi Arabia) through a research fund from the International Cooperation and Knowledge Exchange Administration department at KFU. Cytec are thanked for the generous donation of the trihexyl(tetradecyl)phosphonium chloride sample.

CD-ROM containing supplementary physical properties data materials submitted in pocket inside back cover of print version of thesis.

Advisors/Committee Members: GONZALEZ MIQUEL, MARIA M, Hardacre, Christopher, Gonzalez Miquel, Maria.

Subjects/Keywords: Ionic Liquids; Nanoparticles; Nanofluids; Heat Transfer Fluids

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Oster, K. (2018). Ionic Liquid - Based Nanofluids for Thermal Application. (Doctoral Dissertation). University of Manchester. Retrieved from http://www.manchester.ac.uk/escholar/uk-ac-man-scw:316874

Chicago Manual of Style (16^th Edition):

Oster, Kamil. “Ionic Liquid - Based Nanofluids for Thermal Application.” 2018. Doctoral Dissertation, University of Manchester. Accessed February 27, 2021. http://www.manchester.ac.uk/escholar/uk-ac-man-scw:316874.

MLA Handbook (7^th Edition):

Oster, Kamil. “Ionic Liquid - Based Nanofluids for Thermal Application.” 2018. Web. 27 Feb 2021.

Vancouver:

Oster K. Ionic Liquid - Based Nanofluids for Thermal Application. [Internet] [Doctoral dissertation]. University of Manchester; 2018. [cited 2021 Feb 27]. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:316874.

Council of Science Editors:

Oster K. Ionic Liquid - Based Nanofluids for Thermal Application. [Doctoral Dissertation]. University of Manchester; 2018. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:316874

29. Sahakian, Misha. Machining and toxicological performance of a zinc oxide metalworking nanofluid.

Degree: MS, Industrial Engineering, 2011, Oregon State University

URL: http://hdl.handle.net/1957/23778

► Lower production costs are a common goal of many manufacturers as part of their continuous improvement strategies. A large portion of production costs for manufacturers… (more)

Subjects/Keywords: Machining; Nanofluids

…Use of Nanofluids in Machining . . . . . . . . . . . . . . . . . . . . 9 2.4 Material… …Properties at the Nanoscale . . . . . . . . . . . . . . . . . 10 2.5 Nanofluids as Coolants… …11 2.6 Nanofluids as Lubricants . . . . . . . . . . . . . . . . . . . . . . . . 14 2.7… …2.2 Thermal Conductivities of Common Metal Alloys Used in Nanofluids 12 2.3 Summary of… …nanofluids, machining setup, data collection equipment, and the experimental trials performed…

10 more images…

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Sahakian, M. (2011). Machining and toxicological performance of a zinc oxide metalworking nanofluid. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/23778

Chicago Manual of Style (16^th Edition):

Sahakian, Misha. “Machining and toxicological performance of a zinc oxide metalworking nanofluid.” 2011. Masters Thesis, Oregon State University. Accessed February 27, 2021. http://hdl.handle.net/1957/23778.

MLA Handbook (7^th Edition):

Sahakian, Misha. “Machining and toxicological performance of a zinc oxide metalworking nanofluid.” 2011. Web. 27 Feb 2021.

Vancouver:

Sahakian M. Machining and toxicological performance of a zinc oxide metalworking nanofluid. [Internet] [Masters thesis]. Oregon State University; 2011. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/1957/23778.

Council of Science Editors:

Sahakian M. Machining and toxicological performance of a zinc oxide metalworking nanofluid. [Masters Thesis]. Oregon State University; 2011. Available from: http://hdl.handle.net/1957/23778

Texas A&M University

30. Yu, Jiwon 1982-. Experimental Investigation of Forced Convection Heat Transfer of Nanofluids in a Microchannel using Temperature Nanosensors.

Degree: PhD, Mechanical Engineering, 2012, Texas A&M University

URL: http://hdl.handle.net/1969.1/148235

► Experiments were performed to study forced convective heat transfer of de-ionized water (DI water) and aqueous nanofluids flowing in a microchannel. An array of temperature… (more)

▼ Experiments were performed to study forced convective heat transfer of de-ionized water (DI water) and aqueous nanofluids flowing in a microchannel. An array of temperature nanosensors, called “Thin Film Thermocouples (TFT)”, was utilized for performing the experimental measurements. TFT arrays were designed (which included design of photomask layout), microfabricated, packaged and assembled for testing with the experimental apparatus. Heat removal rates from the heated surface to the different testing fluids were measured by varying the coolant flow rates, wall temperatures, nanoparticle material, nanoparticle morphology (shape and nanoparticle size) as well as mass concentrations of nanoparticles in the coolants. Anomalous thermal behavior was observed in the forced convective heat transfer experiments. Precipitation of the nanoparticles on the heat exchanging surface was monitored using Scanning Electron Microscopy (SEM) and Energy Dispersive X-Ray spectroscopy (EDX). Isolated precipitation of nanoparticles is expected to cause formation of “nanofins” leading to enhancement of surface area and thus resulting in enhanced convective heat transfer to the nanofluid coolants. However, excessive precipitation (caused due to the agglomeration of the nanoparticles in the nanofluid coolant) causes scaling (fouling) of the heat exchanging surfaces and thus results in degradation of convective heat transfer. This study shows that the surface morphology plays a crucial role in determining the efficacy of convective heat transfer involving suspensions of nanoparticles in coolants (or nanofluids). Flow visualization and quantitative estimation of near-wall temperature profiles were performed using quantum dots and fluorescent dyes. This non-contact measurement technique for temperature and flow profiles in microchannels using quantum dots is expected to make pioneering contribution to the field of experimental flow visualization and to the study of micro/nano-scale heat transfer phenomena, particularly for forced convective heat transfer of various coolants, including nanofluids. Logical extensions of this study were explored and future directions were proposed. Preliminary experiments to demonstrate feasibility showed significant enhancement in the flow boiling heat flux values for nanofluids compared to that of pure solvent (DIW). Based on the novel phenomena observed in this study several other topics for future research were suggested, such as, using Surface Plasmon Resonance (SPR) platforms to monitor precipitation of nanoparticles on microchannel surfaces in real time (e.g., for generating surface isotherms). Advisors/Committee Members: Banerjee, Debjyoti (advisor), Annamalai, Kalyan (committee member), Datta-Gupta, Akhil (committee member), Mukherjee, Partha (committee member).

Subjects/Keywords: Nanosensor; Nanofin; Microchannel; Heat transfer; Nanofluids

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Yu, J. 1. (2012). Experimental Investigation of Forced Convection Heat Transfer of Nanofluids in a Microchannel using Temperature Nanosensors. (Doctoral Dissertation). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/148235

Chicago Manual of Style (16^th Edition):

Yu, Jiwon 1982-. “Experimental Investigation of Forced Convection Heat Transfer of Nanofluids in a Microchannel using Temperature Nanosensors.” 2012. Doctoral Dissertation, Texas A&M University. Accessed February 27, 2021. http://hdl.handle.net/1969.1/148235.

MLA Handbook (7^th Edition):

Yu, Jiwon 1982-. “Experimental Investigation of Forced Convection Heat Transfer of Nanofluids in a Microchannel using Temperature Nanosensors.” 2012. Web. 27 Feb 2021.

Vancouver:

Yu J1. Experimental Investigation of Forced Convection Heat Transfer of Nanofluids in a Microchannel using Temperature Nanosensors. [Internet] [Doctoral dissertation]. Texas A&M University; 2012. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/1969.1/148235.

Council of Science Editors:

Yu J1. Experimental Investigation of Forced Convection Heat Transfer of Nanofluids in a Microchannel using Temperature Nanosensors. [Doctoral Dissertation]. Texas A&M University; 2012. Available from: http://hdl.handle.net/1969.1/148235

		in
And / Or
		in
And / Or
		in
And / Or
		in

Open Access Theses and Dissertations