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Effect of conductivity on field emission from an insulatorBell, Stephen Scott. January 1965 (has links)
Thesis (M.S.)--University of Wisconsin--Madison, 1965. / eContent provider-neutral record in process. Description based on print version record. Bibliography: l. 63-64.
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Electrical conductivity and related defect structures in reduced rutile.Oh, Tae-il, January 1985 (has links)
Thesis (Ph. D.) Oregon Graduate Center, 1985.
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Conductivity fluctuations in yttrium barium cooper oxidesFung, Sing Chor 01 January 1994 (has links)
No description available.
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Field theoretical description of the superconducting statePugh, Robert Edward January 1955 (has links)
The superconducting state is described in terms of the electronic plasma in interaction with the electromagnetic potentials. The interaction of the plasma with itself and with the latice, is represented by a potential energy determined such that the equations of motion are self-consistent. The resulting non-linear field equations are solved in the linear approximation. There exist four independent modes of vibration of the field variables corresponding to the plasma oscillations, and one longitudinal and two transverse oscillations of the electromagnetic potentials. The contribution of these modes to the specific heat is discussed. / Science, Faculty of / Physics and Astronomy, Department of / Graduate
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Anisotropy of conduction electrons in n-InSb and extrinsic and intrinsic properties of HgCdTeYoon, Im T. (Im Taek) 08 1900 (has links)
The anistropy of the orbital and spin properties of conduction electrons in InSb has been measured simultaneously using a cyclotron-resonance type experiment. This represents the first time that the anistropy of effective mass in InSb has been directly measured using an optical method.
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Thermoelectric transport properties in nanoscale systemsCao, Jingnan., 曹靖楠. January 2012 (has links)
As the fast development of nanotechnology and further industrial applications, theoretical investigations upon nanoscale devices are in urgent need. Until now several formalisms have been well established in quantum transport of mesoscopic areas, including of tight-binding and first principle calculations. In this dissertation those methods were partly explored to explore transport and thermoelectric features in various models and actual devices.
The density functional theory plus non-equilibrium Green’s function serves well in the probing process of transport properties like conductance in mesoscopic systems. Atoms’ positions were treated as the only input parameters and one computation package based on NEGF-DFT loop was utilized to get the numerical results, then the corresponding thermal quantities were analysed.
The coherent transport exhibits an obvious character in transmission spectrum called transmission node, whose existence relies on the asymmetric structure of molecular junctions. In the main body of the thesis, firstly two types of model simulation were tested, and the following thermoelectric quantities showed that there’s one interesting signature in the thermopower performance, which was its temperature independence around transmission node. Through comparisons between different system parameters a rough regular pattern was obtained, that the degree of zero transmission and the energy difference around it influenced this temperature invariance feature at the same time. While these two properties were mainly determined by the natural structure of devices.
Besides model simulations the ab initio investigations were also carried out. Although the actual device was not easily altered as ideal models, some similar behaviours in the transmission and thermal curves were still found out. The temperature insensitivity was considered to appear more often in a π electron dominated molecular structure rather than ones with σ electron interactions. / published_or_final_version / Physics / Master / Master of Philosophy
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A STUDY OF THE ELECTRICAL CONDUCTIVITY OF ALUMINA AT HIGH TEMPERATURES AND IN A RADIATION FIELDHaidler, William Bernard, 1926- January 1964 (has links)
No description available.
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Synthesis, electrodynamics and biosensor applications of novel sulphonated polyaniline nanocomposites.Immaculate Nyambura Michira. January 2007 (has links)
<p>The overall aim of this thesis was to prepare nanostructured more processable heteronuclear sulphonated polyanyline nanocomposites with electroconductive properties suitable for applications in biosensors. The sulphonated self-assembled polyaniline and derivatised polyaniline nanocomposites (SPAHs) were prepared by chemical oxidative polymerisation or electrical decomposition. The SPAHs prepared include those of polyaniline (PANi), poly-o-methoxyaniline (POMA) and poly-2.5 dimethoxyaniline (PDMA). Two types of sulphonic acids of heteronuclear aromatic hydrocarbons were used in the production of sulphonated SPAH composites. These were anthracene sulphonic acid (ASA) and naphthalene sulphonic acids (NSA) wich played both doping and surfactant roles.</p>
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Electrical conduction in nondegenerate, nonsymmetrical, epitaxial semiconducting filmsCovington, Dale Wayne 12 1900 (has links)
No description available.
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Investigation of argon plasma properties at high pressureWynn, Marvin Craig 08 1900 (has links)
No description available.
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