Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 8 of 8 for “"crystallographic defects"”.
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Exploration of crystallographic defects in topological insulator metamaterials
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2023-12-01
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Pulsed laser deposition of superconducting Sr2RuO4 thin-films and the role of crystallographic defects
… to achieve in thin-films as structural defects and impurities sensitively annihilate the superconducting state. Despite a handful of successful results on the growth of superconducting SRO214 thin-films by molecular beam epitaxy (MBE), reproducible growth by pulsed laser deposition (PLD) …
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Heterogeneous Redox Chemistries in Layered Oxide Materials for Lithium-Ion Batteries
… oxygen release, and chemomechanical breakdown. Crystallographic defects, such as dislocations and grain boundaries, are rich in battery materials. These crystallographic defects change the local lithium-ion diffusivity and have a dramatic effect on the redox reactions. To date, there is still a …
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On the spheroidal graphite growth and the austenite solidification in ductile irons
… in the spheroidal graphite particles. Possible crystallographic defects associated with hexagonal-rhombohedral structure transition were discussed. Schematic models for introducing tilt angles to the graphite lattice with basal plane tilt boundaries were constructed"--Abstract, page iv.</p>
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Computation and application of the lattice Green function to dislocations in metals, intermetallics, and semiconductors
Dislocations are fundamental crystallographic defects that play key roles in determining material properties. The first step to understanding dislocations and being able to model them accurately is knowing their geometry. While the far-field geometry of a dislocation can be well described by …
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Tomographic reconstruction and sub-surface imaging of porous nitride semiconductors
… pore morphology changes driven by variations in crystallographic defect density or type, as well as electrochemical etching conditions, establishing its utility as an accessible, routine characterisation technique alongside cross-sectional SEM. Our sub-surface BSE-SEM imaging technique was …
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Synthesis, Functionalization, and Characterization of Dominant UV Emitting Upconverting Nanocrystals and Absolute Quantum Yield and Power Dependence Metrics for the Elucidation of Upconversion Mechanisms
… activator pairs and the development of numerous crystallographic, co-dopant, morphological, and/or surface-appended optimizations to these materials have given rise to a novel class of nanomaterials, with unique photophysical properties that have direct import into light-based activation of …
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First-principles investigations of transition metal hyperdoped silicon and germanium for intermediate band engineering
… to the infrared regime. Recently, introducing defects at large concentrations several orders of magnitude larger than the equilibrium solubility limit has emerged as an approach to engineering the optical response of silicon. Specifically my thesis research addresses three aspects of hyperdoped …