Department of Physics and Astronomy (MU): Recent submissions
Now showing items 21-40 of 727
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Applications of model systems to explore exchange-correlation effects in density-functional theory
(University of Missouri--Columbia, 2020)Density-functional theory (DFT), in its various forms, has become a near ubiquitous form of theoretical research used to benchmark and prototype solutions to many finite and extended state system. This is largely because ... -
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, ... -
Predicting the structure and energetics of protein-ligand interaction
(University of Missouri--Columbia, 2019)Molecular docking has been a crucial component and remains a highly active area in computer-aided drug design (CADD). In simple terms, molecular docking uses computer algorithms to identify the "best" match between two ... -
Physics-based modeling for RNA folding stability and kinetics
(University of Missouri--Columbia, 2020)[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI--COLUMBIA AT REQUEST OF AUTHOR.] RNA (Ribonucleic acid) molecules play a variety of crucial roles in cellular functions at the level of transcription, translation and gene ... -
Bridging biochemical activities with conformational dynamics observed in atomic force microscopy
(University of Missouri--Columbia, 2020)This dissertation was written with the intention to provide future investigators with general information sufficient to start their own investigations in biological atomic force microscopy. It is noted that background ... -
Theoretical and computational modeling of peptide-lipid bilayer interaction studied by dynamic force spectroscopy
(University of Missouri--Columbia, 2019)This thesis consists of three interrelated theoretical and computational modeling projects that investigate different aspects of peptide-lipid membrane interactions. (1) A general theoretical approach is formulated for the ... -
Understanding the asymmetrical thermoelectric performance for discovering promising thermoelectric materials
(American Association for the Advancement of Science, 2019)Thermoelectric modules, consisting of multiple pairs of n- and p-type legs, enable converting heat into electricity and vice versa. However, the thermoelectric performance is often asymmetrical, in that one type outperforms ... -
Conformal symmetry, accelerated observers, and nonlocality
(MDPI AG, 2019)The acceleration transformations form a 4-parameter Abelian subgroup of the conformal group of Minkowski spacetime. The passive interpretation of acceleration transformations leads to a congruence of uniformly accelerated ... -
Predicting monovalent ion correlation effects in nucleic acids
(American Chemical Society, 2019)Ion correlation and fluctuation can play a potentially significant role in metal ion-nucleic acid interactions. Previous studies have focused on the effects for multivalent cations. However, the correlation and fluctuation ... -
Direct visualization of the E. coli Sec translocase engaging precursor proteins in lipid bilayers
(American Association for the Advancement of Science, 2019)Escherichia coli exports proteins via a translocase comprising SecA and the translocon, SecYEG. Structural changes of active translocases underlie general secretory system function, yet directly visualizing dynamics has ... -
Multiple stochastic pathways in forced peptide-lipid membrane detachment
(Nature Publishing Group, 2019)We have used high resolution AFM based dynamic force spectroscopy to investigate peptide-lipid membrane interactions by measuring the detachment (last-rupture) force distribution, P(F), and the corresponding force dependent ... -
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 ... -
Design, fabrication, and testing of a bioprinted nerve graft
(University of Missouri--Columbia, 2016)Injuries to nerves vary in their consequences, from weakened sensation and motor function to partial or complete paralysis. In the latter case, affecting about twenty thousand Americans yearly, the injury is debilitating ... -
Study of methane and natural gas films on carbonaceous adsorbents in static and dynamic systems
(University of Missouri--Columbia, 2018)Adsorbent materials, such as activated carbons, zeolites and metal organic frameworks, for natural gas storage have been of interest since the early 1970's as alternatives to compressed and liquified natural gas. These ... -
Determination of saturated film densities and volumes for adsorbed hydrogen, and application to the calculation of the enthalpy of adsorption at room temperature
(University of Missouri--Columbia, 2018)The development of high-performance materials for hydrogen storage by physical adsorption requires understanding of detailed microscopic properties of the adsorbed film. In this work, we show that adsorbed hydrogen films ... -
A study of bacterial ribosome 70S complex using smFRET analysis
(University of Missouri--Columbia, 2019)[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] The Ribosome is a fundamental molecular machine found in all cells and is responsible for synthesizing proteins.(Lehninger Principles of Biochemistry ... -
Neutron scattering and microscopy studies of the structure and dynamics of water near a nanostructured hydrophilic copper oxide surface
(University of Missouri--Columbia, 2019)Recently, it has been shown that superhydrophilic coatings of "grass-like" cupric oxide (CuO) nanostructures can significantly improve the thermal performance of heat transfer devices known as oscillating heat pipes (OHPs). ... -
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 ... -
Investigating pore-forming peptides using the atomic force microscope
(University of Missouri--Columbia, 2019)In my projects, I used the Atomic Force Microscope (AFM) to image the effects of pore-forming peptides and I used the Focused Ion Beam (FIB) to modify AFM cantilevers to increase the precision of force spectroscopy ... -
Polarization-induced transport in ferroelelctric organic field-effect transistors
(University of Missouri--Columbia, 2019)In this research we study the role of ferroelectric dielectrics in organic field-effect transistors (FETs) to understand the mechanism of charge transport in organic semiconductors. The ferroelectric nature of the polymer, ...