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Showing 1 to 20 of 37 for “"electronic excitations"”.
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Quantum Transport of Electronic Excitations through Macromolecules
… countless applications in nano-scale (opto-)electronics and in biophysics. Several key issues have not been fully clarified yet, including the role played by molecular thermal fluctuations and the possible correlations between the degree of quantum coherence and the efficiency of the …
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Raman Scattering From Electronic Excitations in N-Type 6h Silicon Carbide
Made available in DSpace on 2015-05-12T22:38:44Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 7206899.PDF: 4442280 bytes, checksum: f544059df63dc066eb018439233edfe2 (MD5) Previous issue date: 1971
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Electronic excitations in branched conjugated oligomers: A quasiparticle view and tight-binding models
… and simulation of the excited state electronic structures of organic conjugated molecules. The exciton scattering (ES) approach has been extended for efficient calculation of optical spectra of large branched conjugated oligomers. The methodology of tight-binding (lattice) model, …
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Tunable Electronic Excitations in Hybrid Organic-Inorganic Materials: Ground-State and Many-Body Perturbation Approaches
… flexibility and thus higher tunability of their electronic properties compared to the 3D HOIPs. Motivated by a desire to demonstrate such flexibility and tunability, a series of 2D HOIPs with oligothiophene derivative as the organic cations and lead halide is investigated in the first part of …
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Quantum Monte Carlo Calculations of the Electronic Excitations of Germanium Atoms, Molecules and Nanoclusters Using Core-Polarization Potentials
… calculations of the total energy, and for excitations of atoms and small molecules. However, there are only small changes in the lowest optical excitations of larger clusters, which can be understood in terms of the nature of the excitations, mainly the relative Ge s to p atomic orbital …
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Quantum Monte Carlo Calculations of the Electronic excitations of GE atoms, molecules and Nanoclusters Using Core-polarization Potentials
Made available in DSpace on 2012-11-11T17:34:22Z (GMT). No. of bitstreams: 1 Vincent_Jordan.pdf: 1813578 bytes, checksum: 000c75ebbdce02ae4ef0a1b33bfd67e6 (MD5) Previous issue date: 2001
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Development and Efficient Implementation of Electron-Hole Interaction Kernel for Investigation of Electronic Excitations in Semiconductor and Metallic Nanoparticles
… methods towards computationally inexpensive electronic excited state calculations. The frequency-dependent geminal-screened electron-hole interaction kernel (FD-GSIK) method provides a real-space approach towards eliminating the virtual space reducing the computational effort present in most …
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Quantum Physics of Photosynthetic Light -Harvesting
… by light harvesting complexes and transfer of electronic excitation to the photosynthetic reaction center (RC) constitutes the primary step of photosynthesis, i.e., the light harvesting process. A model for an atomic level structure of a so-called photosynthetic unit of the photosynthetic …
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Quantum physics of photosynthetic light-harvesting
… by light harvesting complexes and transfer of electronic excitation to the photosynthetic reaction center (RC) constitutes the primary step of photosynthesis, i.e., the light harvesting process. A model for an atomic level structure of a so-called photosynthetic unit of the photosynthetic …
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Optical, electronic, and dynamical phenomena in the shock compression of condensed matter
… shock compression of condensed matter including electronic excitations at the shock front, a new dynamical formulation of shock waves that links the microscopic scale to the macroscopic scale, and basic questions regarding the role of crystallinity in the propagation of electromagnetic radiation …
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Self-Consistent Phonon Theory of Aperiodic Solids and Density Functional Theories of Freezing and Vitrification
… to the mean spherical model description of electronic excitations in liquids. The theory exhibits a mechanical instability rather close to computer simulated glass transitions, suggesting the possibility that the simulations probe only linear stability because of the short simulation times.
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Raman spectroscopy of metallic carbon nanotubes
… that are both technologically promising for electronic applications, and scientifically interesting for studying the physics of low dimensional materials. In this thesis, we present a detailed study of the inelastic light scattering (Raman) spectrum of individual metallic carbon nanotubes, …
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Direct Observation of Nodal Quasiparticles in the Non-Magnetic Superconductors Yttrium(lutetium)nickel-Boron-Carbon Field-Angle Dependent Heat Capacity
… at points or lines in momentum space, permitting electronic excitations, termed nodal quasiparticles, to exist at temperatures well below the superconducting transition. In the vortex phase, the presence of nodal quasiparticles should be directly observable through the variation of the heat …
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Coherent multi-exciton dynamics in semiconductor nanostructures via two-dimensional Fourier transform optical spectroscopy
… semiconductors produce a hierarchy of collective electronic excitations (i.e. excitons, biexcitons, etc.) which may be harnessed for applications in quantum optics, light-harvesting, or quantum information technologies. These excitations represent correlations among successively greater numbers of …
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Investigation of the Photophysical Properties of pi-Conjugated Polymers. A Study by Non-Linear, Time-Resolved, and Single-Molecule Spectroscopy
… to their high potential for applications in optoelectronic devices. Despite the progress in the field of device fabrication, a full understanding of the dynamics of electronic excitations and the intrinsic electronic and optical properties of these functional materials is still not complete. To …
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Solar radiation control by pyrolytic oxide thin films
… Absorption in the oxide films studied is due to electronic excitations and it is also found to be dependent upon crystallinity; the more crystalline films being more absorbing. It was determined that absorbance is related to the semiconducting behavior of the oxides. Absorbance increases when …
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Raman scattering in heavy rare earth metals
… Scattering was used to probe vibrational and electronic excitations in Dy, Er and Y and magnetic excitations in Dy and Er. The vibrational light scattering measurements have revealed an anomalous temperature dependence of the zone-center transverse optical phonon in Dy and Er. Previous …
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