Browsing PhD Dissertations - DO NOT EDIT by Title
Now showing items 28-47 of 82
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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 ... -
INVESTIGATION OF HIGH-TEMPERATURE OXIDATION RESISTANCE MECHANISM OF CERAMIC COATINGS VIA MICROSTRUCTURE ANALYSIS
(2020-09-03)Recent developments of ceramic coatings deposited using magnetron reactive sputtering show that these films exhibited superior high-temperature oxidation resistance along with other desirable properties such as high hardness, ... -
Investigation of Microstructure Effects on Hardness and Oxidation Resistance of New Generation Ceramic Coatings
(2017-08-16)This work was motivated by the demand for a new generation of materials capable for harsh environment applications, and focused on developing a better understanding of the effects of elemental composition and microstructure ... -
INVESTIGATION OF THE PLASMA ELECTROLYTIC OXIDATION MECHANISM OF TITANIUM
Plasma electrolytic oxidation (PEO) is an environmentally friendly technology capable of forming coatings with excellent adhesion strength at high deposition rates. The PEO process is particularly attractive for forming ... -
INVESTIGATION OF THE PROCESSING-STRUCTURE-PROPERTY RELATIONSHIP IN Ta-Si-N NANOCOMPOSITE COATINGS
(2018-05-23)The present-day industry demands development of coatings for harsh environmental applications which can resist impact and oxidation at high temperatures. It is vitally important to develop new hard (>30 GPa) protective ... -
INVESTIGATION OF THE SURFACE TOPOLOGY CHANGES ASSOCIATED WITH FATIGUE
(2019-05-17)Metals have long been known to change their surface topology when subjected to a plastic strain. Given that a plastic zone exists at the tip of a propagating crack, it would seem natural to quantitatively study surface ... -
INVESTIGATION OF THERMOPHYSICAL PROPERTIES OF ENHANCED MOLTEN SALT NANOFLUIDS FOR THERMAL ENERGY STORAGE (TES) IN CONCENTRATED SOLAR POWER (CSP) SYSTEMS
(2018-01-16)Concentrated solar power (CSP) technologies have a great economical and technical potential for energy production in future. Its incorporation with thermal energy storage (TES) overcomes one of the biggest challenges in ... -
Investigation On The Mechanism Of Interface Electromigration (EM) In Copper (Cu) Thin Films
(Materials Science & Engineering, 2007-08-23)This study concerns the mechanism of the interface electromigration (EM) in copper (Cu) thin films. While EM in Cu is one of the most concerned reliability failure phenomena in Cu interconnects used microelectronic devices, ... -
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 ... -
Magnetic-plasmonic Multilayered Nanorods
(Materials Science & Engineering, 2015)Multilayered nanorods which consist of alternating magnetic layers separated by Au layers combine two distinctive properties, magnetic properties and surface plasmonic resonance (SPR) properties into one nano-entity. Their ... -
Mechanical Reliability Of Porous Low-k Dielectrics For Advanced Interconnect: Study Of The Instability Mechanisms In Porous Low-k Dielectrics And Their Mediation Through Inert Plasma Induced Re-polymerization Of The Backbone Structure
(Materials Science & Engineering, 2015)Continuous scaling down of critical dimensions in interconnect structures requires the use of ultralow dielectric constant (k) films as interlayer dielectrics to reduce resistance-capacitance delays. Porous carbon-doped ... -
MECHANISM OF WEAR AND TRIBOFILM FORMATION WITH IONIC LIQUIDS AND ASHLESS ANTIWEAR ADDITIVES
(2016-07-26)Increasingly stringent government regulation on emissions (EPA Emissions Standard Reference Guide and latest CAFE standards requiring an average fuel economy of 54.5 mpg (combined cars and trucks) by 2025) impose significant ... -
METAL NANODENDRITES AND THEIR APPLICATIONS AS 3D SURFACE ENHANCED SCATTERING (SERS) SUBSTRATES
(2021-05-26)Ultrasensitive detection of chemicals and biological analytes has been a focus of a lot of studies in the recent years. In this search for the versatile detection technique, Surface Enhanced Raman Spectroscopy (SERS) has ... -
Microstructural Evolution Of Surface Layers During Electrolytic Plasma Processing
(Materials Science & Engineering, 2010-07-19)Electrolytic Plasma Processing is an emerging technology for surface modification. The EPP process is based on electrolysis of an aqueous electrolyte by application of an electrical potential between the workpiece and ... -
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 ... -
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 ... -
Nanoparticle Bridge DNA Biosensor
(Materials Science & Engineering, 2010-07-19)A new DNA sensing method is demonstrated in which DNA hybridization events lead to the formation of nanoparticle satellites that bridge two electrodes and are detected electrically. The hybridization events are exclusively ... -
Nature Inspired Technology: A New Process For Silicification based on Marine Sponges
(2018-05-23)Silica is used in various industries, ranging from automobile industry for tires to semiconductor industry, paints and coatings, biomedical devices & applications to food & drug industry. The current processing techniques ... -
PHYSICAL MODELING OF FILAMENT GROWTH AND RESISTIVE SWITCHING IN METAL OXIDE-BASED RRAM
(2022-12-15)Metal oxide-based resistive random-access memories (RRAM) exhibit several excellent performances, such as nanosecond switching speed, large write-erase endurance, and long retention time, and can potentially replace the ... -
Preparation And Characterization Of Properties Of Electrodeposited Copper Oxide Films
(Materials Science & Engineering, 2008-04-22)Copper oxides, including cuprous oxide and cupric oxide, are prepared by electrochemical deposition. The structural, optical and electrical properties of as-deposited copper oxides are evaluated, based on which cuprous ...