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Showing 1 to 13 of 13 for “"Materials Physics"”.
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Multiscale ab initio approaches to materials physics
This work presents new ab initio approaches to materials physics. We first introduce the multiscale approach to determination of thermal properties and changes in free energy. With this approach one can perform thermal averaging of ensembles of states with ab initio methods, thus enabling ab initio …
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Materials Physics for Thermoelectric and Related Energetic Applications
… changing and the controlling of the dimension of materials systems, the scattering mechanism(s) of carriers, the shape of the electronic band structure and the density of states, and the magnitude of the band gap. As further research is carried out, it is found that these strategies do not always …
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Processing Ion Beam Mixed Nickel/Polyimide Thin Films
… low-temperature characterization system in the Materials Physics Testing lab at SMSU to measure the resistance of each film as a function of temperature. These methods have been described thoroughly as a reference for future research. Measurements made before and after irradiation revealed that …
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Efficient Automated Generation of Local Descriptors for Use in ab initio Electronic Structure Simulations
… that cost is a key goal of the computational materials physics community and machine learning (ML) is viewed as a potential tool for that task. However, ML model training requires carefully selected input descriptors for training. This thesis presents a computer program that is designed to …
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Dielectric reliability and spin dependent transport in Co-Fe-B/MgO/Co-Fe-B magnetic tunnel junctions
… by a magnetic field. Thus, in ferromagnetic (FM) materials, the motion of an electron depends on its spin orientation with respect to local magnetization. This gives rise to interesting new effects to the field of spintronics. Spintronic effects occur on a length scale in which spin is conserved, …
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Thermal transport in two-dimensional materials and magnetic multilayers
Understanding thermal transport properties of materials is essential for both device applications and materials physics. Thermal conductivity and interface thermal conductance are important engineering parameters for small-scale device applications. In addition, microscopic quantities of how …
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Soft Self-assembly and Densest Packings in Colloidal Models
<p>Inspired by the beauty of various materials with distinct structures and functions in nature, researchers have been dedicating themselves to discover new ways of creating functional artificial materials to fulfill the increasingly various needs in life. Self-assembly, categorized into the …
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Particle shape optimization in colloidal clusters for structural colour applications
Structural colour is abundant in nature and has been extensively explored using colloidal clusters formed of spherical particles in both experiment and simulation. As compared to pigment based colour, structural colour is more robust to degradation and has the potential for multifunctional …
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Functional materials for thermal regulation
Developing thermal management materials with greater functionality for the control of heat dissipation and regulation is a fundamental step to improve the performance in many engineering systems. This dissertation presents experimental studies of heat conduction in distinctive thermal functional …
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Design and Assembly of Nanostructured Complex Metal Oxide Materials for the Construction of Batteries and Thermoelectric Devices
… . Nevertheless, complex metal oxide-based materials have drawbacks when they are used in thermoelectric devices. Since they have high thermal conductivities and low power factors, they have lower thermoelectric figures of merit (ZT). This affects their performance as thermoelectric …
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Laser beam induced current studies of Hg1-xCdxTe photodiodes
Laser-beam-induced-current (LBIC) is being investigated as a combined electro-optical (EO) alternative to individual electrical and optical based measurements of p-n junction photodiodes. The technique is non-destructive and employs a focused low-power laser beam that is scanned across the …