RSS 1.0Physics and Astronomy Electronic Theses and Dissertations (UMKC)
The items in this collection are the theses and dissertations written by students of the Department of Physics and Astronomy. Some items may be viewed only by members of the University of Missouri System and/or University of Missouri-Kansas City. Click on one of the browse buttons above for a complete listing of the works.
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Recent Submissions
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Ultra Low Power SubThreshold Device Design Using New Ion Implantation Profile
(University of Missouri--Kansas City, 2016)One of the important aspects of integrated circuit design is doping profile of a transistor along its length, width and depth. Devices for super-threshold circuit usually employ halo and retrograde doping profiles in ... -
Electronic Structure in the Organic-based Magnet [Feᴵᴵ(TCNE)(NCMe)₂][FeᴵᴵᴵCl₄] using the Orthogonalized Linear Combination of Atomic Orbitals Method with Hubbard U
(University of Missouri--Kansas City, 2017)The Hubbard U parameter is applied to the organic-based magnet [Feᴵᴵ(TCNE)(NCMe)₂][FeᴵᴵᴵCl₄] using the Orthogonalized Linear Combination of Atomic Orbitals (OCLAO) methods. The Local Spin Density Approximation (LSDA) ... -
Investigation of Interconnect and Device Designs for Emerging Post-MOSFET and Beyond Silicon Technologies
(University of Missouri--Kansas City, 2016)The integrated circuit industry has been pursuing Moore’s curve down to deep nanoscale dimensions that would lead to the anticipated delivery of 100 billion transistors on a 300 mm² die operating below 1V supply in the ... -
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 ... -
Observing the Sedimentation of TiO2 Nanoparticles in Aqueous Solution Using a Quartz Crystal Microbalance with Dissipation Monitoring
(University of Missouri--Kansas City, 2016)The development of a novel and less expensive approach to the quartz crystal microbalance with dissipation monitoring (QCM-D) is explored. Using a vector network analyzer (VNA) to measure harmonic ranges from the primary ... -
Growth of Semiconductor Thin Films by Pulsed Laser Deposition
(University of Missouri--Kansas City, 2016)Pulsed ultraviolet light from a XeF excimer laser was used to grow thin films of zinc oxide and tin dioxide on (111) p-type silicon wafers within a versatile high vacuum laser deposition system. This pulsed laser deposition ... -
A Hybrid Modeling Approach to Assess the Efficacy of Control Measures on Paratuberculosis on U.S. Dairy Farms
(University of Missouri--Kansas City, 2016)Paratuberculosis, also known as Johne's disease or JD, is a chronic contagious infection, caused by Mycobaterium avium paratuberculosis (MAP). This fatal disease is incurable and causes considerable economic losses to ... -
Modeling and Design of a Silicon-Based High-Pressure 3HE Replacement Neutron Detector
(University of Missouri–Kansas City, 2015)3He has stood as a major isotope used for neutron detection for many years. Due to national concerns of a possible 3He shortage, significant effort has been put forth, in the form of 3He alternative research, to push the ... -
Neutron Response Vectorization and Optimization of Moderating Neutron Spectrometers for Active Interrogation
(University of Missouri–Kansas City, 2015)The detection of special nuclear material (SNM) is no trivial task; the low activity of isotopes such as 235U and the ease of shielding make their passive detection virtually impossible in the maritime environment. Active ... -
Using WISE to Find Obscured AGN Activity in SDSS Mergers and Interactions
(University of Missouri–Kansas City, 2015)In simulations, major encounters between gas-rich galaxies are predicted to drive gas to the centers of interacting and merging systems triggering new star formation (SF) and fueling an active galactic nucleus (AGN). ... -
Searching for Interacting Early Type Galaxies at Late Cosmic Times
(2015)Major gas-poor (dry) merging between two comparably massive spheroidal galaxies are post u-lated to be the central mechanism responsible for the assembly of the most massive (M[subscript star,tot] ≥ 10¹¹ M[subscript ☉]) ... -
Structure and Mechanical Properties of Cement and Intermetallic Compounds via ab-initio Simulations
(2015)Calcium silicate hydrates comprise a class of minerals formed synthetically during Portland cement hydration or naturally through various geological processes. The importance of these minerals is immense since they are the ... -
Structure and Physical Properties of Hydrogrossular Mineral Series
(2015)The mineral hydrogrossular series (Ca₃Al₂(SiO4)₃₋ₓ(OH) ₄ₓ; 0 ≤ x ≤ 3) are important water bearing minerals found in the upper and lower part of the Earth’s mantle. They are vital to the planet’s hydrosphere under different ... -
Model Creation and Electronic Structure Calculation of Amorphous Hydrogenated Boron Carbide
(2015)Boron-rich solids are of great interest for many applications, particularly, amorphous hydrogenated boron carbide (a-BC:H) thin films are a leading candidate for numerous applications such as: heterostructure materials, ... -
Photosensitivity and Magnetosensitivity of The Drosophila Circadian Clock
(2014)The experiments in this thesis addressed whether magnetic fields can enhance entrainment (phase determination) of the circadian clock by light. The experiments were conducted using a species of small fruit flies, Drosophila ... -
Generalized Koszul Properties of Commutative Local Rings
(2014)We study several properties of commutative local rings that generalize the notion of Koszul algebra. The properties are expressed in terms of the Ext algebra of the ring, or in terms of homological properties of powers ... -
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 ... -
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, ... -
Electrical Carrier Mobility Measurements of Amorphous Hydrogenated Boron Carbide Using Space-Charge-Limited Current Techniques
(2015-08-11)Within the field of neutron detection, there has been a push to develop solid-state direct-conversion devices. Amorphous hydrogenated boron carbide (a-BxC:Hy) is of particular interest for this purpose because it has a ... -
Photoemission Spectroscopy Studies of New Topological Insulator Materials
(2015-08-04)As the size of a solid shrinks, the ratio of surface area to bulk volume grows and surface effects become more important. In a world where technologies advance with the shrinking size of electronic devices, one phase of ...