Browsing Theses and Dissertations (MU) by Thesis Department "Physics and astronomy (MU)"
Now showing items 21-40 of 128
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Developing molecular docking methods to model protein interactions
(University of Missouri--Columbia, 2016)[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] In many cellular processes, proteins carry out their functions through interacting with other molecules, such as small compounds (i.e. ligands), peptides ... -
Development and analysis of ZnO-based semiconductor photodetectors for UV detection
(University of Missouri--Columbia, 2010)The objective of this thesis is to develop ZnO-based semiconductor photodetectors for UV detection with low dark current, high responsivity, and fast response time. To achieve this objective, an understanding of carrier ... -
Donor-acceptor copolymers and sol-gel processable zinc oxide for thin film transistors and hybrid photodetectors
(University of Missouri--Columbia, 2019)[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] Organic semiconductors have been gaining attention both in research and commercial development for electronic devices due to their low manufacturing ... -
Dust formation and evolution around carbon stars
(University of Missouri--Columbia, 2018)Evolved intermediate-mass stars with carbon-to-oxygen ratios (C/O) above unity are known as carbon stars. Carbon stars are surrounded by dust shells dominated by carbon (C) and silicon carbide (SiC) grains. These SiC grains ... -
Effect of temperature, density, and strength of electric current on the spectra of gases
(University of Missouri--Columbia, 1901)Light may be defined as that vibration of the ether which, acting on the organ of sight, produces in us the sensation of vision. But when, on reflection, we realize that the sense of sight is the most useful of all man's ... -
Effects of spin current in ferromagnets
(University of Missouri--Columbia, 2008)[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] This thesis focuses on the investigation of magnetization dynamics induced by spin transfer torques. The first part of this thesis presents the ... -
Electrolytic rectifiers
(University of Missouri--Columbia, 1912)More than a half-century ago, Wheatstone, in experimenting with the electro-chemical behavior of certain elements, laid the foundation for the modern chemical rectifier. In the year 1855, he found that aluminum as anode ... -
Emergent properties in the artificial magnetic honeycomb lattice of ultra-small elements
(University of Missouri--Columbia, 2018)[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] The artificial magnetic honeycomb lattice is expected to manifest a broad and tunable range of novel magnetic phenomena associated with the geometric ... -
The enigmatic thirteen micron feature
(University of Missouri--Columbia, 2013)Low and intermediate mass stars (0.8--8 solar masses) will eventually evolve into Asymptotic Giant Branch (AGB) stars and pulsate out their atmosphere into the space around them. That ejected material will eventually cool ... -
Exploration of magnetism in 3D and 2D systems
(University of Missouri--Columbia, 2019)Magnetism has intruded in every aspect of our life, from electric motors to hard disk data storage to space technologies. Developing strong understanding of underlying magnetic properties is of utmost importance to reach ... -
Exploring defects and induced magnetism in epitaxial graphene films
(University of Missouri--Columbia, 2019)Graphene has been demonstrated to have unique properties not only in its virgin state but also by altering its environment through rotations in bilayer graphene, doping, and creating heterostructures with other 2D materials, ... -
Exploring star formation in high-mass galaxies in the low-z universe
(University of Missouri--Columbia, 2018)We present a quantitative analysis of high-mass, low-z galaxies in order to investigate the 'downsizing' scenario of galaxy evolution. High-mass, low-z galaxies with ongoing star formation, antithetical to the 'downsizing' ... -
Extremely extended dust shells around evolved intermediate mass stars: probing mass loss histories, thermal pulses and stellar evolution
(University of Missouri--Columbia, 2011)Intermediate mass stars ($0.8 - 8 solar masses), at the asymptotic giant branch phase (AGB) suffer intensive mass loss, which leads to the formation of a circumstellar shell (s) of gas and dust in their circumstellar ... -
First-principles investigation of transport and magnetism
(University of Missouri--Columbia, 2021)Study of the quantum mechanical nature of a material provides invaluable understanding of its underlying mechanisms governing their fascinating novel properties. Density functional based first-principles methods provide ... -
Frequency domain fluorescent molecular tomography and molecular probes for small animal imaging
(University of Missouri--Columbia, 2009)In this thesis, we have developed a frequency domain fluorescent molecular tomographic system based on the heterodyne technique using a single source and detector pair for small animal imaging. In our system, the intensity ... -
From the lab bench to the fuel tank : development and analysis of novel adsorbents for hydrogen and natural gas storage
(University of Missouri--Columbia, 2020)Hydrogen and natural gas offer a promising avenue towards reducing greenhouse gas emissions in the transportation sector; however, storage poses a non-trivial challenge, with current systems requiring prohibitively large ... -
Fundamental building blocks of nanoporous networks from ultra-small-angle x-ray scattering (USAXS) and small-angle x-ray scattering (SAXS) experiments
(University of Missouri--Columbia, 2010)A new method of structural analysis that measures the nominal dimensions of pores using ultra-small-angle x-ray scattering (USAXS) and small-angle x-ray scattering (SAXS) data is presented. The characterization technique ... -
Galaxy evolution as seen by Herschel
(University of Missouri--Columbia, 2018)The unprecedented Herschel data have revolutionized our view of the IR universe, providing new insights to galaxy formation and evolution. However, the Herschel data are still far away from being fully explored, mainly due ... -
Gas sorption in engineered carbon nanospaces
(University of Missouri--Columbia, 2009)Vehicular storage of gaseous fuels is a key enabling technology for the two pillars of a non-petroleum based transportation economy natural-gas vehicles and hydrogen fuel cell vehicles. My research focuses on the development ... -
General relativistic theory of light propagation in the field of gravitational multipoles
(University of Missouri--Columbia, 2007)We consider propagation of electromagnetic signals through the time-dependent gravitational field of an isolated astronomical system emitting gravitational waves. The system is assumed to possess multipole moments of ...