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.
Results
Showing 1 to 20 of 24 for “"Electromagnetic Response"”.
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Electromagnetic response of time-reversal breaking metallic phases in two dimensions
… achieve an effective action. Finally, the full response polarization tensor is derived and its Ward identity is shown to be obeyed.
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Geometric and electromagnetic response and anomalies in topological phases of matter
… topological phases of matter by studying their response to external perturbations. In the first half of the thesis we study incompressible fluid phases with odd, or Hall, viscosity. This kind of viscosity was originally discovered in quantum Hall fluids, where it can be computed by studying the …
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A Characteristic Mode Analysis of Conductive Nanowires and Microwires Above a Lossy Dielectric Half-Space
… extraordinary mechanical, thermoelectric and electromagnetic properties which led to their incorporation in a wide variety of applications. The purpose of this study is to investigate the effect of material on the electromagnetic response of these nanowires. We used the Method of Moments (MOM) …
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Scalable Acceleration of The Characteristic Mode Analysis Computational Toolbox Using Big Data Techniques
… in the design and analysis of a wide range of electromagnetic devices such as antennas and nano-structures. CMA provides physical insight into a target's electromagnetic response by analyzing its Method of Moments (MoM) complex impedance matrix at every frequency. Depending on the size or the …
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Electromagnetic Characterization of Complex-Shaped Carbon Nanotubes Using Characteristic Mode Analysis
… interface. In this work, we calculate the electromagnetic scattering characteristics of carbon nanotubes with complex shapes. Moreover, we quantify the electromagnetic response of these complex carbon nanostructures using Characteristic Mode Analysis (CMA). CMA decomposes the current of a …
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Exploring linear and nonlinear electromagnetic responses in topological materials
… serves to examine the linear and nonlinear electromagnetic response properties in topological materials.Topological materials tend to produce unique transport signatures that point to the underlying topology of its electronic energy bands.Furthermore, given the recent experimental interest …
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Novel Electromagnetic Scattering Models for Nano-Composites and Nano-Sensor Applications
… have the unique capability of coupling to electromagnetic radiation of wavelengths far larger than their size and confining the coupled energy to the structure’s sub-wavelength vicinity. This unique ability has paved the way for a diverse range of energy harvesting, biological, and chemical …
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Loss compensation in a plasmonic nanoparticle array
… fabricated by focused ion beam milling, and its electromagnetic response in the presence or absence of a dye coating has been simulated in preparation for pump-probe optical testing. The compensation of losses via a fluorophore coating has been proven for the first time in this geometry, for a …
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Inclusive scattering of polarized electrons from polarized protons in the Delta-excitation region with BLAST
… comprehensive and precise way the spin-dependent electromagnetic response in one and few-body systems over a large kinematic range. It has been used to measure spin-dependent scattering from the elastic to the nucleon resonance region for hydrogen and deuterium using a longitudinally polarized …
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Entanglement and hall viscosity
… entanglement in relation to the geometric response known as Hall viscosity. We begin by reviewing geometric response in the quantum Hall effect in comparison to its well-known electromagnetic response, Hall conductivity. We develop an understanding of momentum transport due to Hall …
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Study of optical propulsion concepts and techniques for small-satellites
… also explores how material selection affects the electromagnetic response of the closely positioned asymmetric nanostructures.</p> <p>Furthermore, a dielectrophoretic (DEP) nanoparticle injector concept and its use in a plasmonic/photonic-based nanoparticle manipulation system is also described. …
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Chemical Correlation of Magnetic Permeability and Microwave Absorption in Spinel Ferrite Nanoparticles
… a critical role in the determination of their electromagnetic performances. This dissertation explores the effect of chemical doping of nanoscale ferrites of 4 – 12 nm) on the complex permeability and ferromagnetic resonance (FMR) behavior. Size-dependent studies in MnFe₂O₄ and CoFe₂O₄ reveal …
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Frequency and time domain analysis of carbon nanotubes with realistic shape and distribution
… interest in a wide range of applications. For electromagnetic applications, simplifying assumptions regarding the distribution and shapes of the CNTs are typically made because the exact three-dimensional CNT distribution in the composite is unknown. The goal of this work is to use …
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Metamaterial enhanced coupling
… large part, to metamaterials' ability to exhibit electromagnetic behavior not normally found in nature. This is because these artificial structures display a strong electromagnetic response as a result of their geometry, as opposed to their chemistry, and that response typically dominates that of …
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Patterns of electro-magnetic response in topological semi-metals
… states of matter which have robust and unique electromagnetic responses and surface states. In this thesis, we consider semimetals which have point like Fermi surfaces in various spatial dimensions $D=1,2,3$ which naturally occur in the transition between $n$th order weak topological insulators …
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Synthesis and chemical modification of carbon nanostructures for materials applications
… explores the structure, chemical reactivities, electromagnetic response, and materials properties of various carbon nanostructures, including single-walled carbon nanotubes (SWCNTs), multi-walled carbon nanotubes (MWCNTs), graphite, and graphene nanoribbons (GNRs). Efficient production and …
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Higher-order topological phases with crystalline symmetries
… cones and hinge arcs. We then discuss the unique electromagnetic response in the 2nd-order Weyl semimetals. Our work serves as the first step to the discovery as well as the understanding of HOWSMs.
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Geophysical Imaging of Earth Processes: Electromagnetic Induction in Rough Geologic Media, and Back-Projection Imaging of Earthquake Aftershocks
… dissertation focuses on two different types of responses of Earth; that is, seismic and electromagnetic, and aims to better understand Earth processes at a wider range of scales than those conventional approaches offer. Electromagnetic responses resulting from the subsurface diffusion of applied …
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Design of multidimensional microplasma array for biofilm removal and dynamic photonic crystals
… their interactions with biofilms and electromagnetic waves. Biofilms are ubiquitous in municipal drinking water distribution systems, and they present significant human health concerns because they often harbor pathogens. Biofilms serve as pathogen reservoirs by supplying nutrients and …
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Fluctuation-induced interactions and nonlinear nanophotonics
… given geometry and the real-frequency classical electromagnetic response of the same geometry, but with dissipation added everywhere. This correspondence forms the starting point of a numerical Casimir solver based on the finite-difference time-domain method, which we describe and then implement …
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