Browsing Dissertations & Theses by Title
Now showing items 42-61 of 192
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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 ... -
Effects Of Surface Plasmon Excitations On Photoluminescence By CdSe/Zns Quantum Dots
(Materials Science and Engineering, 2013)The influence of localized surface plasmons (LSPs) and surface plasmon polaritons (SPPs) on the photoluminescence (PL) spectra of core/shell type CdSe/ZnS quantum dots (QDs) has been studied. Thin film samples of these ... -
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 ... -
Electrodeposition Of Nickel Sulfide And Its Thermal Oxidation For Photovoltaic Applications
(Materials Science & Engineering, 2012-04-11)Alternative photovoltaic materials that feature natural abundance, low extraction and processing costs, and reasonable efficiency have to be found. In this respect, transition metal chalcogenides such as oxide and sulfide ... -
ELECTROMIGRATION INDUCED INTERFACE REACTION IN Cu-WIRE / Al-PAD DIFFUSION COUPLE
(2017-01-17)This dissertation presents experimental observations that may assist the understanding of electromigration (EM) failure mechanism active in Cu wire and Al thin film pad (wire bond). This study is motivated by an ongoing ... -
ELEMENT-SPECIFIC NANOPARTICLE PLACEMENT TOWARD FABRICATING MULTI-ELEMENT METASTRUCTURES
(2019-05-17)Nanoscale entities such as semiconductor nanoparticles, magnetic nanoparticles, metal nanoparticles, and dielectric nanoparticles have attracted a lot of attention due to their novel electrical, optical, and magnetic ... -
Enhanced Mechanical Stability Of Interlayer Dielectrics With Self-organized Molecular Pores
(Materials Science & Engineering, 2015)In order to reduce resistance-capacitance delays in interconnect structures, ultralow-k films are used as interlayer dielectric materials. In most cases the preferred method to achieve the lower dielectric constant is the ... -
Enhanced Photocatalytic Performance Of Titania Nanobelts Decorated With Gold Particles Synthesized Using Stirring-assisted Hydrothermal Method
(Materials Science & Engineering, 2015)In this thesis, anatase TiO2 nanobelts (TNBs) have been successfully obtained via an optimized stirring-assisted hydrothermal synthesis. The impact of stirring speed has been studied. Difference in morphology caused by ... -
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 ... -
Experimental Study Of Laminated Composite Tubes Under Bending
(Materials Science & Engineering, 2007-08-23)Bending stiffness of laminated composite tubes was determined experimentally using four-point bending test. The experimental results were compared with the results obtained by the laminated plate and smear property approaches. ... -
Extension Of A Progressive Failure, Energy Dissipation, Composite Tailoring Concept To A Healing Configuration
(Materials Science & Engineering, 2011-10-11)A composite failure tailoring concept that results in a yield type response under tension has been proposed, modeled, and experimentally verified in prior research. The concept capitalizes upon a sequential, progressive ... -
Fabrication And Characeterization Of Granular Magnetic Gold Nanoparticles
(Materials Science & Engineering, 2009-09-16)In recent years, gold and magnetic nanoparticles have showed great potential in biomedical applications. Magnetic nanoparticles can be used in both in- vivo and in-vitro applications such as drug and gene delivery, ... -
Fabrication And Characterization Of Barium Titanate Thin Film On Polycrystalline Nickel Substrate
(Materials Science & Engineering, 2013-10-22)Ferroelectric BaTiO₃(BTO) thin films were deposited on polycrystalline nickel disks and silicon wafer substrates by rf magnetron sputtering. Nickel oxide (NiO) and nanocrystalline nickel (nc-Ni) layers were used as interfacial ... -
Fabrication And Characterization Of Cobalt-Diamond-like-Carbon (Co-DLC) Nanocomposites
(Materials Science & Engineering, 2008-04-22)In recent years, synthesis of magnetic nanocomposites has been receiving significant attention. These nanocomposites offer opportunities to develop active nanomaterials with various applications like magnetic data storage ... -
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 ... -
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 ... -
FABRICATION OF SOLID POLYMERIC 3D SHAPES FROM PROGRAMMABLE FLAT HYDROGEL SHEETS
(2018-05-24)Modern methods of fabricating three-dimensional (3D) objects include sheet metal forming, thermoforming, and additive manufacturing among others. These methods have their own advantages and disadvantages regarding scalability, ... -
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 ... -
Formation Of Au Nanoparticles Through Reaction Of Na₃Au(SO₃)₂ By Electrochemically Evolved Hydrogen
(Materials Science & Engineering, 2010-07-19)Hydrogen evolution during electrochemical deposition has long been regarded as undesired and deliberately suppressed since small hydrogen bubbles could cause a rough surface of deposits. Here, we demonstrate a new role for ... -
Fundamental Understanding Of Soot Induced Wear Mechanism Of Diesel Engines
(Materials Science & Engineering, 2014-09-17)Emission of Oxides of nitrogen and particulates matters from diesel engines have been reduced by implementing exhaust gas recirculation (EGR) protocols but at the expense of increased wear of engine components. This ...