Browsing PhD Dissertations - DO NOT EDIT by Issue Date
Now showing items 1-20 of 82
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Development Of Computational Fluid Dynamics (CFD) Based Erosion Models For Oil And Gas Industry Applications
(Mechanical Engineering, 2013)Erosion prediction plays a critical role in different oil and gas industry segments including drill bit manufacturing, measurement & logging while drilling (M&LWD), and reservoir engineering/completions tools. Recently, ... -
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, ... -
Thermal Failure Mechanism And Voltammetry Metrology For Cu/barrier/low K Integration
(Materials Science & Engineering, 2007-08-23)The present study investigates the thermal stability of Cu/barrier/porous low κ (PLK) integration first, and then a new characterization method based on voltammetry is developed to characterize quality of diffusion ... -
Synthesis And Characterization Of Polythiophene Derivatives
(Materials Science & Engineering, 2007-10-08)In Chapter 1, the history of conducting polymers, especially polythiophene and its derivatives, was briefly reviewed. Different approaches of structural modifications to afford small bandgap polythiophene derivatives were ... -
Diffusion-free Back Contact Solar Cells On S-passivated Si(100) Substrates
(Materials Science & Engineering, 2008-04-22)A diffusion-free back contact solar cell is proposed in this work. The textured front-side of this cell is coated with ~100 nm thermal SiO2 to enhance the light trapping meanwhile reduce the surface recombination velocity ... -
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 ... -
Composition - Microstructure - Property Relationships In Dual Phase Bulk Magnetoelectric Composite
(Materials Science & Engineering, 2008-08-08)The coexistence of coupled electrical and magnetic properties in the “magnetoelectric” material has led to the possibility of developing smarter and smaller electronic components. In order to make this possibility a ... -
Fabrication Of FePt Ferromagnetic Nanoparticles
(Materials Science & Engineering, 2008-08-08)Fabrication of chemically disordered FePt particles ranging from 2 - 9 nm with a precision of 1 nm has been achieved through modification of key process variables including surfactant concentration, heating rates and the ... -
Tribological And Antiwear Mechanisms Of Fluorinated Zinc Dialkyl Dithiophosphate In Comparison To Zinc Dialkyl Dithiophosphate In Engine Oils
(Materials Science & Engineering, 2008-08-08)Tribofilms generated in wear tests using lubricants containing fluorinated ZDDP and ZDDP were studied. Fluorinated ZDDP demonstrated superior wear performance compared to ZDDP under tribological conditions even at lower ... -
A Study Of The Antiwear Behavior And Oxidation Stability Of Fluorinated Zinc Dialkyl Dithio Phosphate In The Presence Of Antioxidants
(Materials Science & Engineering, 2008-08-08)The antiwear additive Zinc dialkyl dithio phosphate (ZDDP) is one of the most important components of engine-oil additives and a major source of phosphorus. Phosphorus plays a crucial part in mitigating engine wear, yet ... -
Synthesis, Characterization And Potential Applications Of FePt Nanoparticles
(Materials Science & Engineering, 2009-09-16)Monodisperse FePt nanoparticles with controlled size and geometry have drawn great attention in the last decade for fundamental scientific studies and for their potential applications in advanced materials and devices such ... -
Synthesis And Evaluation Of Bioceramics For Orthopedics And Tissue Culture Applications
(Materials Science & Engineering, 2009-09-16)Hydroxyapatite is the most well known phosphate in the biologically active phosphate ceramic family by virtue of its similarity to natural bone mineral. Among all bioglass compositions Bioglass®45S5 is one of the most ... -
Room-temperature Single-electron Devices Based On Cmos Fabrication Technology
(Materials Science & Engineering, 2009-09-16)Single-electron devices, in which the transport and storage of individual electrons is precisely controlled, have many potential benefits in the field of electronics, optics, and sensors. Fabrication of these devices ... -
Self Powered Sensing By Combining Novel Sensor Architectures With Energy Harvesting
(Materials Science & Engineering, 2010-03-03)Recent advancements in the field of wireless sensor networks have resulted in increasing demand for self-powering techniques that reduces the dependence on batteries. In order to address this problem, there has been ... -
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 ... -
Tribological Performance Of Ashless Antiwear Additives Under Extreme Pressure Conditions
(Materials Science & Engineering, 2010-07-19)Zinc diakyl dithiophosphate (ZDDP) has been used in engine oil for several decades as an antiwear additive. However, ZDDP is the primary source of P, S and Zn in the exhaust, which results in frequent maintenance or ... -
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 ... -
Solid-state Tunneling Spectroscopy Of Individual Quantum Dots
(Materials Science & Engineering, 2010-07-19)Quantum dots are gaining importance for their potential applications in the fields of energy harvesting, bio-labeling and treatment, in opto-electronic devices and in photonic devices. For all these applications, it is ... -
Bubble Template Synthesis Of Hollow Gold Nanoparticles And Their Applications As Theranostic Agents
(Materials Science & Engineering, 2010-11-01)Hollow gold nanoparticle with a sub-30nm polycrystalline shell and a 50 nm hollow core has been successfully synthesized through the reduction of sodium gold sulfite by electrochemically evolved hydrogen. Such hollow gold ... -
Study On The Leakage Current Behavior And Conduction Mechanism Of Porous Low-k In Cu/porous Low-k Interconnects: The Influence Of Extrinsic Factors
(Materials Science & Engineering, 2010-11-01)This study investigates the influence of extrinsic factors including moisture and impurities trapped in porous low-k (PLK) and defective diffusion barrier on the leakage current behavior and the associated conduction ...