Patent ID: 8741158
Filing Date: 2014-06-03
Classification: B44C,B82Y,C03C,C23C,Y10T

Abstract:
1. A method of forming an article with a nanostructured surface layer, comprising: providing a substrate; forming a decomposed film on the substrate, etching said decomposed film for an etch duration to form the nanostructured surface layer comprising a plurality of spaced apart nanostructured features comprising a contiguous, protrusive material, wherein said nanostructured layer comprises nanopores formed by said plurality of spaced apart nanostructured features, wherein the etch duration is selected wherein the nanostructured surface layer comprises a layer-substrate surface adjacent to the substrate and a layer-air surface opposing the layer-substrate surface, wherein the variable porosity comprises an increasing degree of porosity in a direction from the layer-substrate surface toward the layer-air surface, and wherein the graded index of refraction comprises a decreasing index of refraction in a direction from the layer-substrate surface toward the layer-air surface.