Browsing by Thesis Department "Physics (UMKC)"
Now showing items 1-20 of 70
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Ab initio calculations of mechanical, thermodynamic and electronic structure properties of mullite, Iota-alumina and boron carbide
(University of Missouri--Kansas City, 2012-05-22)The alumino-silicate solid solution series (Al₄₊₂xSi₂-2xO₁₀-x) is an important class of ceramics. Except for the end member (x=0), Al₂SiO₅ the crystal structures of the other phases, called mullite, have partially occupied ... -
Ab initio computational applications of electronic structure and spectroscopic Properties of bulk Crystalline materials
(2013)Boron-rich compounds and elemental boron have amazing chemical, physical and mechanical properties, but puzzling structures. The uncertain stoichiometric value of foreign elements in boron-rich compounds greatly influences ... -
Ab initio computational applications to complex biomolecular systems
(University of Missouri--Kansas City, 2012-01-17)A series of biomaterial related systems ― including water and DNA molecules ― have been studied using ab initio (first-principles) methods. By investigating the properties of water as the preliminary step, the hydrogen ... -
Ab Initio Study of Amorphous Zeolitic Imidazolate Framework (A-ZIF) and Pyrophosphate crystals
(2020)Zeolitic imidazolate frameworks (ZIFs) are a rapidly emerging class of versatile porous material with many potential applications. Here, we report the construction of an amorphous ZIF (a-ZIF) model from a near-perfect ... -
Addressing On-Chip Power Conversion and Dissipation Issues in Many-Core System-on-a-Chip based on Conventional Silicon and Emerging Nanotechnologies
(University of Missouri -- Kansas City, 2017)Integrated circuits (ICs) are moving towards system-on-a-chip (SOC) designs. SOC allows various small and large electronic systems to be implemented in a single chip. This approach enables the miniaturization of design ... -
Advanced Design and Analysis of UWB U-slot Microstrip Patch Using Theory of Characteristic Modes
(University of Missouri--Kansas City, 2017)Ultra wide band is rapidly advancing as a high data rate wireless communication technology. As is the case in conventional wireless communication systems, an antenna also plays a very crucial role in UWB systems. ... -
Application of Ab Initio Calculations and Molecular Dynamics to Collagen and Brome Mosaic Virus
(University of Missouri--Kansas City, 2016)Molecular Dynamics (MD) simulations are no more accurate than the underlying force field which represents the molecular interactions. In this thesis, we have calculated ab initio atomic partial charges for proteins of ... -
Application of ab initio calculations to collagen and brome mosaic virus
(2014-07-17)In bio-related research, large proteins are of important interest. We study two such proteins. Collagen contains one such protein, the collagen triple-helix, which forms part of the structural matrix for animals, such as ... -
The Bulk and Interfacial Electronic and Chemical Structure of Amorphous Hydrogenated Boron Carbide
(2013)The chemical and electronic structure, as related to the surface, interface and bulk of amorphous hydrogenated boron carbide (a-BxC:Hy), is of interest in neutron detection and microelectronics. This dissertation investigates ... -
Characteristic Mode Analysis of Crumpled Graphene Flakes and A New Green’s Functions Evaluation Method for Layered Media
(University of Missouri -- Kansas City, 2019)Graphene flakes (GFs) in real composites are rarely perfectly flat, and often exhibit complicated crumpled shapes. Therefore, the goal of this work was to quantify the electromagnetic scattering characteristics of individual ... -
The complex refractive index of water
(University of Missouri--Kansas City, 1981)A spectrum of the imaginary part of the complex index of refraction for water as a function of wave number was compiled from the literature and theoretical considerations. The spectrum ranged from 10⁻⁶ through 10⁸ cm⁻¹. ... -
Computational Modeling of a-SiO₂ Nanoparticles and their Electronic Structure Calculation
(2015-08-12)The spherical amorphous silica (a-SiO₂) nanoparticles (NPs) are constructed from a previous continuous random network (CRN) model of a-SiO₂ with the periodic boundary. The models of radii 12 Å, 15 Å, 18 Å, 20 Å, 22 Å, ... -
Constructing massive blue elliptical galaxies in the local universe
(2013)Over cosmic time, galaxy mass assembly has transitioned from low-mass, starforming disk galaxies to massive, quiescent elliptical galaxies. The merger hypothesis for the formation of new elliptical galaxies provides one ... -
Correlates of gender and achievement in introductory algebra based physics
(2013)The field of physics is heavily male dominated in America. Thus, half of the population of our country is underrepresented and underserved. The identification of factors that contribute to gender disparity in physics is ... -
Current sensing atomic force microscopy study of aging mechanism of the nafion membranes due to thermal annealing
(University of Missouri--Kansas City, 2011-09-14)Proton transport properties of Nafion 212 and Nafion 115 membranes have been studied using current sensing atomic force microscopy to reveal changes of the ionic domains and the local ionic conductivity distribution in ... -
Deciphering of packing signal hypothesis in bacterophage RNA recognition by the MS2 capsid protein in virus assembly
(University of Missouri -- Kansas City, 2018)MS2 is a classical example of a single-stranded RNA virus for which the genomic RNA plays pivotal roles in the virus assembly process. Multiple dispersed RNA se quence/structure motifs, packaging signals (PSs) varying ... -
Design of Instrumentation and Methodologies for Determination of Free Neutron Characteristics
(University of Missouri -- Kansas City, 2017)Measuring neutron source‐dependent free neutron properties over a large neutron energy range, with human‐portable instrumentation, continues to push the frontier of neutron detection instrumentation design and analysis ... -
Determining Elemental Concentrations of Nickel-Doped Iron Samples through the Method of Laser Induced Breakdown Spectroscopy
(University of Missouri--Kansas City, 2017)Accurate information about the composition and concentration of the elements comprising a material is oftentimes of the utmost importance. Laser induced breakdown spectroscopy (LIBS) is a method for determining ... -
Effect of electric fields on the synthesis of nanoparticles of tin and silicon in a liquid environment
(2015-07-28)The effect of externally applied electric fields on the size and morphology of nanoparticles fabricated by laser ablation was investigated. In this method, a pulsed laser beam was focused onto a solid target of either ... -
The Effect of Thermal Annealing on Phase Separation in Organic Photovoltaic Films
(2015)In our research, we used amplitude modulated atomic force microscopy to study the effect of thermal annealing on the morphology of four recently developed bulk heterojunction photovoltaic films. Each cell was fabricated ...