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An evaluation of column thermal diffusion as a means of polymer characterization.Taylor, David L. 01 January 1962 (has links)
No description available.
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A cylindrical probe for determination of thermal constants in situYarger, Douglas Neal, 1937- January 1962 (has links)
No description available.
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The effect of a temperature gradient on concentration in solid alloysFanning, James Collier 08 1900 (has links)
No description available.
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The improvement in separation of concentric tube thermal diffusion columnsYeh, Ho-ming 05 1900 (has links)
No description available.
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In situ apparent thermal conductivity measurement at depth in the unsaturated zoneAberra, Gebre Brhan, January 1974 (has links) (PDF)
Thesis (M.S. - Hydrology and Water Resources)--University of Arizona. / Includes bibliographical references.
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Continuous throughput rectification of organic liquid mixtures with vertical, countercurrent thermal diffusion columnsLongmire, David Robinson. January 1957 (has links)
Thesis (Ph. D.)--University of Wisconsin, 1957. / eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 240-248).
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Investigation of the utilization of thermal diffusion in separation processesBrock, J. R. January 1960 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1960. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 226-231).
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Thermal diffuse scattering of low energy electronsMcKinney, James Thomas, January 1966 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1966. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.
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Thermal conductivity measurement of oxygen by the shock perturbation methodKwak, Sang Dae. January 1981 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1981. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.
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Thermal diffusion of organic semiconductors determined by scanning photothermal deflection (SPD) techniqueChiu, Ka Lok 14 July 2020 (has links)
Thermal diffusivity (D), measuring how fast heat propagates in a medium, is an important quantity in heat conduction. For a medium with great thermal diffusivity, it will reach thermal equilibrium in shorter time. In the field of solid state materials, thermal diffusivity can give information about the quality and morphology of solid, since D is very sensitive to microstructures. However, studies on the thermal diffusion of organic semiconductors are very scarce. In this thesis, the thermal diffusion of different classes of photovoltaic polymers and their blends with molecular electron acceptors were studied by scanning photothermal deflection (SPD) technique. The reliability of the technique was confirmed by the good matching between the SPD derived experimental D values and the nominal D values of different reference materials obtained from literatures. To illustrate that determination of thermal diffusivity is a possible method for studying microscopic properties of organic photovoltaic materials, SPD technique was applied to various films of photovoltaic polymers with different crystallinities. It is observed that photovoltaic polymers always possess small D values in the range of 0.3mm2/s to 2.3mm2/s. It is also discovered that photovoltaic polymers with more planar molecular structure, stronger π-π stacking and higher crystallinity would possess larger D values. When photovoltaic polymers are blended with small molecular acceptors bulk heterojunctions (BHJs), the thermal diffusivity is always reduced due to disrupted polycrystalline structure and increase probability of intermolecular phonon transport. However, for all-polymer BHJs with polymeric acceptor, the reduction in thermal diffusivity can be moderate as the proportion of ultrafast intramolecular phonon transport is SPD technique was also applied to PBDB-T:(ITIC-M+N2200) ternary BHJs with different ITIC-M to N2200 weight ratio. The thermal diffusivity of the ternary blend increases with the weight percentage of N2200 polymeric acceptor. It is observed that PBDB:(ITIC-M+N2200) ternary photovoltaic devices with enhanced thermal diffusion can possess enhanced photostability. Such enhancement in photostability is attributed to the reduced heat trapping at the area being illuminated due to the improved thermal diffusion.
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