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 10 of 10 for “"polarization anisotropy"”.
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Directional Dependence and Polarization Anisotropy in Pump-probe Microscopy
… imaging. Chapter 3 discusses an intrinsic polarization anisotropy in the pump-probe signal of melanin. I develop a formalism based on transition dipole moments to model this polarization anisotropy, and use it to decompose pump-probe signals in several pigments (melanin, historic artwork …
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Optical studies of III-V quantum wires grown by strain induced lateral ordering (SILO) process
… measurements have been employed to study the polarization anisotropy in the emission from these structures. Photoluminescence power dependence and photoluminescence excitation spectroscopy is used along with the FTPL results to confirm the formation of quantum wires by the SILO process and to …
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Deconvolution of Membrane Protein-Detergent Complex Interactions
… a method to utilize steady state fluorescence polarization to look at the desolvation of detergents from various membrane proteins. The overall goal is to create a methodology that can be employed broadly to map the kinetic fingerprints of various detergents with distinct membrane proteins. …
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Single -Molecule and Ensemble Fluorescence Studies of Single -Stranded DNA and Replication Proteins
… and here we will use both Fluorescence Polarization Anisotropy (FPA) and Fluorescence Resonance Energy Transfer (FRET) to study these biomolecules. First, we present a method by which single molecule FRET measurements can be used to determine the persistence length of single-stranded …
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Dynamics and structures of linear and supercoiled DNAs
… is determined by time-resolved fluorescence polarization anisotropy. Circular dichroism spectra are also measured for each sample. These data are consistent with the hypothesis that supercoiling induces two successive allosteric transitions to alternate global secondary …
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Long-wavelength gallium-indium-arsenide quantum wire lasers
… peak energies, and photoluminescence polarization anisotropy has confirmed the QWR formation. The SILO process induced lateral composition modulation occurs over a wide temperature range near 500$\sp\circ$C, and the magnitude of strain accumulates when growth proceeds. A strain-driven …
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Broadband, millimeter-wave antireflection coatings for cryogenic sintered aluminum oxide optics
… we have measured the CMB's temperature anisotropy and power spectrum to high precision (Barrow and Coles, 1991; de Bernardis et al., 2000; Planck Collaboration, 2016a). Most recently, experiments are attempting to measure the CMB's polarization anisotropy. Measurements of polarization …
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Exploring the spectroscopy of vibrational levels in the 160 mass region
… from Oriented States (DCO ratios) and polarization anisotropy (Ap). In order to meaningfully describe the quantum behavior of the newly established structures, the Nilsson and Cranked Shell Models have been used. The results also test the latest and most sophisticated quantum theories …
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Wide band-gap nanowires for light emitting diodes
… extraction efficiency, due to the strong polarization anisotropy of III-nitrides, and display similar IQE as c-directional axial heterostructures. By combining IQE and directed extraction, a range of expected directed external quantum efficiencies (EQEs) reveal that m-directional axial …
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Dynamics of water and aqueous protons studied using ultrafast multi-dimensional infrared spectroscopy
… dynamics, we performed ultrafast 2D IR spectral anisotropy on the OH stretching vibration of HOD in D₂0 to directly track the reorientation of water molecules as they change hydrogen bonding environments. Interpretation of the experimental data is assisted by modeling drawn from molecular …