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Nucleation and dynamics of vortices in type-II superconductors

Description: The one- and two-dimensional Ginzburg-Landau equations are numerically integrated in a slab geometry, which is appropriate for comparison to experimental work done on films. When two-dimensional variations become energetically favorable, a vortex is found to nucleate and move to the center of the film with the Gibbs free energy decreasing during the process. An important process by which the energy is lowered during this nucleation procedure is found to be the savings in condensation energy ari… more
Date: March 1, 1977
Creator: Balley, R. E.
Partner: UNT Libraries Government Documents Department
open access

Electron Transfer at Sensitized Semiconductor Electrodes

Description: Electron transfer from the excited state of sensitizing dyes to the conduction band of semiconductors has been studied through photoelectrochemical techniques. Two systems were analyzed in detail: rhodamine B on ZnO and rose bengal on TiO/sub 2/. Prior to electrochemical experimentation, the adsorption characteristics of these dyes were investigated using ZnO, ZnS, and TiO/sub 2/ single crystals as substrates. Absorbance measurements of the adsorbed dye were taken as a function of the solution … more
Date: March 1977
Creator: Spitler, Mark Thomas
Partner: UNT Libraries Government Documents Department
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