USP

United States Patent 7,258,731
D'Urso , et al. August 21, 2007

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Abstract
A hydrophobic disordered composite material having a protrusive surface feature includes a recessive phase and a protrusive phase, the recessive phase having a higher susceptibility to a preselected etchant than the protrusive phase, the composite material having an etched surface wherein the protrusive phase protrudes from the surface to form a protrusive surface feature, the protrusive feature being hydrophobic.
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Inventors: D'Urso; Brian R. (Clinton, TN), Simpson; John T. (Clinton, TN)
Assignee: UT Battelle, LLC (Oak Ridge, TN)

United States Patent 4,149,902
Mauer , et al. April 17, 1979
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Abstract
Apparatus for concentrating radiant energy such as solar radiation, collected over a large area, to a smaller area for more efficient conversion of the radiant energy to a more useful form of energy. Fluorescent material in a thin film form is optically bonded by an adhesive or viscous, transparent medium to a massive slab of transparent material such as glass or plastic. Energy conversion devices, such as photovoltaic cells, are disposed around the edges of the slab.

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