Browsing PhD Dissertations - DO NOT EDIT by Issue Date
Now showing items 21-40 of 82
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Self-assembly Of Polystyrene Nanospheres And Its Applications As Templates For Plasmonic Structures
(Materials Science & Engineering, 2011-03-03)Monodispersed colloidal polystyrene spheres have been self-assembled into various structures as templates for the fabrication of different nanostructures. Two unique self-assembly processes have been developed and ... -
Nanocrystalline Piezoresistive Polysilicon Film Obtained By Aluminum Induced Crystallization For Pressure Sensing Applications
(Materials Science & Engineering, 2011-03-03)The overall objective of our research was to integrate various sensors on to a single flexible substrate for multi-sensory information gathering. Additional capabilities could be incorporated towards the realization of ... -
Templated Synthesis And Characterizations Of High Moment Magnetic Nanoparticles For Bioapplications
(Materials Science & Engineering, 2011-07-14)Magnetic nanoparticles have been widely used for biomedical applications such as drug and gene delivery, hyperthermia treatment of cancer, MRI contrast enhancement, cell labeling and magnetic separation. We present two new ... -
Electrochemical N-type Doping In Metal Oxides And Its Application In Photovoltaics
(Materials Science & Engineering, 2011-07-14)Electrodeposition has the advantages of low-cost, high-throughput and large-area processing which is particularly suitable for solar cells fabrication. Two common metal oxides prepared by electrodeposition are discussed ... -
First-principles Studies On N-type And P-type Doping In Cuprous Oxide
(Materials Science & Engineering, 2012)We have performed studies on n-type and p-type cuprous oxide with and without doping by first principles methods. Generalized Gradient Approximation (GGA) is used for the geometry optimization. The total energy and the ... -
Growth Mechanism And Interface Effects On Microstructure Of Perovskite-type Barium Titanate-based Epitaxial Films
(Materials Science & Engineering, 2012-07-25)This work was motivated and focused on the growth mechanism, microstructures and interfaces of barium titanate, BaTiO₃ (BTO), based epitaxial thin films. Transimission electron microscopy (TEM), high resolution TEM (HRTEM), ... -
Properties Of Concrete With Tire Derived Aggregate And Crumb Rubber As A Ligthweight Substitute For Mineral Aggregates In The Concrete Mix
(Materials Science & Engineering, 2012-07-25)Scrap tires continue to be a nuisance to the environment and this research proposes one way of recycling them as a lightweight aggregate which can substitute for mineral aggregates in concrete. Aggregates derived from scrap ... -
An Innovative Epitaxial Growth Method For Minimizing Dislocations In Thin-film Quantum-dot Optoelectronic And Photovoltaic Device Applications
(Materials Science & Engineering, 2012-07-25)A new buffer layer method for epitaxial growth of lattice-mismatched semiconductor quantum-dots based p-i-n structures is presented. To our knowledge this is the first instance of a dislocation-reduction approach that ... -
Cuinse2: Electronic Activities Of Grain Boundaries And Solar Cell Fabrication Studies
(Materials Science & Engineering, 2013-03-20)This dissertation is composed of three studies related to chalcopyrite solar cells. The first study is on electronic activities of grain boundaries (GBs) in CuInSe<sub>2</sub> (CIS). Despite being polycrystalline, chalcopyrite ... -
Investigation On Thermo-mechanical Instability Of Porous Low Dielectric Constant Materials
(Materials Science & Engineering, 2013-03-20)This study investigates the structural stability of porous low dielectric constant materials (PLK) under thermal and mechanical load and the influence of contributing factors including porosity as intrinsic factor and ... -
Surface modification of iron and aluminum by electrolytic plasma processing
(Materials Science and Engineering, 2014)Electrolytic Plasma Processing (EPP) is an emerging, clean surface modification technology which is able to both clean and, depending on the circuit polarity, deposit either cationic or anionic species from an aqueous ... -
Syntheses, Characterization, And Applications Of Injectable Citrate-based Mussel-inspired Biodegradable Adhesive (iCMBA) Polymers And Hydrogels
(Materials Science & Engineering, 2014-03-10)Tissue adhesives are increasingly gaining more popularity in various areas of biomedical applications. They are utilized as surgical adhesives, as a replacement or adjunct to conventional wound closure and bleeding control ... -
The Effects Of Microstructure On The Mechanical Properties Of Hard Transition Metal Silicon Nitride Nanocomposite Coatings
(Materials Science & Engineering, 2014-03-12)In this body of work, the examination of two different transition metal silicon nitride (MeSiN) systems using two different methods of physical vapor deposition (PVD) allowed for the development of a detailed understanding ... -
Au-based Core-shell Nanoparticles For Direct Formic Acid Fuel Cells
(Materials Science & Engineering, 2014-03-12)Unique Au/Pd core-shell nanoparticles were synthesized via galvanic replacement of Cu by Pd on hollow Au nanoparticles. Au/PtCu core-shell nanoparticles were also synthesized using this method. These core-shell nanoparticles ... -
Grain Structure Evolution Of Tin-based Lead-free Solder Joints In Electronic Packaging Assembly And Its Impact On The Fatigue Reliability
(Materials Science & Engineering, 2014-03-12)Solder is one of the main joints materials used in the electronics for decades of years. It is not only the mechanical support but also conducts the electric signals in the electronics. However, the regulation of lead ... -
Fabrication And Characterization Of Single Electron Device And Study Of Energy Filtering In Single Electron Transport
(Materials Science & Engineering, 2014-03-12)Single electron devices, in which transport of single electrons is precisely controlled, hold a great promise as important components of future electronic devices and sensors. However, technical challenges have prevented ... -
Nano-morphology Of Polymer Bulk Herojunctions Studied By Time-resolved Synchrotron X-ray Scattering
(Materials Science & Engineering, 2014-03-12)This study investigates the phase transformation of an active layer in organic photovoltaics (OPV) during film deposition and post thermal treatment as well as effects of phase transformation on OPV performance. For this ... -
Temperature-dependence Of Stress-related Phenomena
(Materials Science & Engineering, 2014-07-14)Efforts have been made to develop a simple but physically sound model. The model was specifically proposed to capture, explain, and estimate the temperature sensitivity and strengthening mechanism phenomena in small volume ... -
Study And Manipulation Of Electron Tunneling Through Quantum Dots
(Materials Science & Engineering, 2014-07-14)Fermi-Dirac distribution is the fundamental property which governs the electron energy distribution in solids. At finite temperatures, Fermi-Dirac thermal smearing of electron energies limits the operation of many electronic, ... -
Experimental And Numerical Study Of Phase Transition Of LiFePO₄ Material In Lithium Ion Batteries
(Materials Science & Engineering, 2014-07-14)Phase transition behavior of LiFePO4 material has been studied in this work. During electrochemical charge/discharge processes, LiFePO4 transforms into FePO4 and this electrochemically driven phase transition of the two-phase ...