Browsing Electronic Theses and Dissertations by Author "D. Greg Walker"
Now showing items 1-20 of 23
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Zhu, Chi (2014-06-27)Department: Mechanical EngineeringThe use of immersed-boundary methods to solve complex/moving-boundary flow problems, especially those in biofluid dynamics, has been popular in recent years. Such methods typically employ a stationary structured grid, e.g., ...
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Reinholtz, Carrie K (2006-12-04)Department: Mechanical EngineeringAn experimental analysis of a novel two-dimensional lid-driven cavity flow is presented. The system that is developed and tested contains six movable boundary sections that can be driven in pairs to generate complex flow ...
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Brock, Casey Neil (2019-05-20)Department: Interdisciplinary Materials ScienceIn principle, the properties of materials are determined by the behavior of electrons. Therefore quantum mechanical electronic structure calculations play a critical role in materials modeling. These calculations owe much ...
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Coppens, Zachary Joseph (2017-10-03)Department: Mechanical EngineeringMetamaterials, which derive their optical properties from subwavelength structures, have emerged in recent years as a promising way to tune refractive index and achieve optical properties not present in natural materials. ...
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Lammlein, David Hunter (2010-11-09)Department: Mechanical EngineeringFriction Stir Welding (FSW) is a high quality joining process which is currently limited by its range of application. Four experiments are presented which demonstrate expanded application of FSW. Included with these ...
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Travis, Brandon Ewin (2008-12-30)Department: Mechanical EngineeringThis thesis evaluates the fundamental understanding of electroosmotic flow in a heterogeneous converging-diverging circular microchannel. Three converging-diverging circular microchannels were modeled and the Poisson-Boltzmann ...
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Walker, Ebonee Alexis (2012-04-20)Department: Interdisciplinary Materials ScienceCarbon nanotubes (CNTs) are modeled using the Tersoff-Brenner potential and thermal conductivities were estimated using non-equilibrium molecular dynamics. Thermal conductivity for single-wall carbon nanotubes (SWNTs) and ...
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Chang, Xinlian (2006-09-15)Department: Environmental EngineeringThis study systematically investigated the effects of aerosol chemical composition on SOA production in real atmosphere. The findings in this study help reveal the interactions between individual aerosol components and the ...
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Thompson, Matthew White (2019-09-20)Department: Chemical EngineeringIonic liquids are organic salts that exist in the liquid state near ambient conditions. They exhibit remarkable physical properties, including low vapor pressure and high thermal, chemical, and electrochemical stability, ...
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Kitko, Kristina Elizabeth (2018-11-20)Department: Interdisciplinary Materials ScienceThe plasma membrane is a complex, dynamic, and multifunctional microenvironment whose components mediate much of cellular communication. The size, unique properties, and ability to target and tailor nanoscale materials has ...
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Yang, Lin (2019-03-25)Department: Mechanical EngineeringUnderstanding and controlling thermal transport in one dimensional nanostructures as well as at their interfaces are emerging as an essential necessity for the development of a broad variety of technologies in nanoelectronics ...
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Li, Wei (2016-03-28)Department: Mechanical EngineeringSurface plasmons, coherent oscillations of electrons in metals that can be excited with electromagnetic waves, are a key component in routing and manipulating light-matter interaction at nanometer length scales. Because ...
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Harl, Robert Randall, Jr. (2013-12-10)Department: Chemical EngineeringCombustion synthesis leverages the exothermic reaction between a fuel and an oxidizer to provide the energy needed to form crystalline refractory oxides. In many cases combustion syntheses are less energy intensive and ...
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Musho, Terence David (2012-04-10)Department: Interdisciplinary Materials ScienceIn the ongoing struggle to resolve our current energy crisis, many agencies and researchers have spearheaded the application of direct energy conversion materials, such as thermoelectric and thermionic devices for waste ...
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La Croix, Andrew Dylan (2018-09-24)Department: ChemistrySolar energy stands out as an extremely promising candidate to meet the need for renewable energy due to its abundance in availability and the capability of application in multiple scenarios. This work aims to push the ...
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Harris, Andrew Gordon (2015-12-02)Department: ChemistryUsing density functional theory (DFT) the interface of metal nanoparticles to cup-stacked carbon nanofibers were modelled and studied for binding interactions and characterization signatures for different crystal facets ...
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Lagus, Todd Peter (2014-01-10)Department: Mechanical EngineeringDroplet-based microfluidics involves the manipulation of small (often picoliter) volumes of fluid that are suspended within an immiscible carrier fluid. Encapsulating single biological cells within aqueous microdroplets ...
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Ramachandran, Vishwanath (2013-02-01)Department: Electrical EngineeringSingle-event mechanisms in InAlSb/InAs/AlGaSb high electron mobility transistors (HEMTs) are identified and investigated. Single-event transients are characterized using broadbeam and microbeam experiments along with 2-D ...
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Leach, Alice Dorinda Penrice (2017-03-31)Department: Interdisciplinary Materials ScienceColloidal semiconductor nanocrystals have become one of the most versatile systems for studying the fundamental properties of nanoscale materials and their applications. The ternary I-III-VI2 semiconductors hold particular ...
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Tonigan, Andrew Michael (2017-03-27)Department: Interdisciplinary Materials ScienceAn important aspect of engineering systems for use in extreme environments is understanding the performance of electronic components in radiation environments (e.g., space environments, nuclear reactors, particle accelerators). ...