Browsing Department of Materials Science and Engineering by Title
Now showing items 59-78 of 195
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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 ... -
GOLD-NANOPARTICLE-BASED THERANOSTIC AGENTS FOR RADIOTHERAPY OF MALIGNANT SOLID TUMORS
(2016-09-15)Radiation therapy is one of the three major methods of cancer treatment. The fundamental goal of radiotherapy is to deliver high radiation doses to targets while simultaneously minimizing doses to critical structures and ... -
Gold/ Copper Sulphide And Gold Nanoparticles For Application In Cancer Therapy
(Materials Science & Engineering, 2012-04-11)The main goal of this research is to use Gold/ Copper Sulphide (Au/ CuS) and Gold nanoparticles (AuNPs) for improving the therapeutic effects in the treatment of cancer. One of the biggest successes in photothermal therapy ... -
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 ... -
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), ... -
GUANIDINIUM BASED ANION EXCHANGE MEMBRANES FOR SOLID POLYMER ALKALINE FUEL CELL APPLICATIONS
(2015-12-09)Low temperature traditional PEM Fuel Cells and also other fuel cells in general suffer from the acute yet long standing issues of cost and performance. This has severely hindered the commercialization of fuel cells but ... -
Hierarchical microstructures to overcome the conflict between strength and toughness of hard coatings: TiN/Ni as a model system
(2022-07-13)In the recent times, industry's production speed has been increasing and thus, the production of parts needs to adapt and so do the materials used to manufacture them. Hence, tools exposed to more extreme conditions using ... -
Influence of the Volume-Contact Area Ration on the Growth Behavior of the Cu-Sn Intermetallic Phase
(2015-12-21)Solder Joints play a very important role in electronic packaging industry by serving as mechanical support and provides integrity to the device. The increasing demand for high performance, environmental and economic ... -
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 ... -
Interactions Between Antiwear Agent And Novel Additive In Engine Oils
(Materials Science & Engineering, 2007-08-23)Research has shown that side/end products of phosphorus and sulfur compounds in engine oils reduce effective life of exhaust catalysts of automobiles resulting in harmful emissions. Thus environmental regulations have been ... -
INTERFACE REACTION INDUCED STRESS DEVELOPMENT IN AN ALUMINUM THIN FILM COPPER BULK PLATE DIFFUSION COUPLE
(2015-12-18)This thesis investigates the mechanism of the interface reaction induced intermetallic phase formation (IMC) and its impact on the interface reliability in Al-Cu diffusion couple pairing. This study is motivated by the ... -
Interfacial Reaction Of Sn-based Solder Joint In The Package System
(Materials Science & Engineering, 2014-09-17)Now a day in electronic industry, as the trend of requiring smaller package size with better electronic performance, lead-free solder joints are always required to decrease their sizes. As a result, the reliability of ... -
Interlaminar Fracture Of Unidirectional Reinforced Composites With Toughnened Resin Systems
(Materials Science & Engineering, 2007-08-23)Several undisclosed fiberglass and carbon fiber laminates with toughened resin systems were tested and examined. Experiments were conducted to determine Modes I and II interlaminar fracture toughness for each of the nine ... -
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 SURFACE CONTAMINATION IN A Cu-BASED Al ALLOY OCCURRING DURING TEM SAMPLE PREPARATION
(2018-08-17)This thesis investigates the nature of surface contamination originating from the jet-polishing process on Cu-6 wt% Al TEM disks. During previous TEM imaging and diffraction analysis performed by our group, surface ...