Patent ID: 8951892
Filing Date: 2015-02-10
Classification: B60C,B81B,B82Y,G01L,G01N,G02B,H01L

Abstract:
1. A method of fabricating a nanopillar device, the method comprising: forming a mask layer on a substrate; forming a first layer of nanoclusters over the mask layer; patterning a first layer of photoresist over the first layer of nanoclusters to open a window overlying a first region of the substrate; using the first layer of photoresist and the first layer of nanoclusters as an etch mask, etching a first region of the mask layer overlying the first region of the substrate to transfer a pattern formed by the first layer of nanoclusters into the first region of the mask layer; after removing the first layer of photoresist and the first layer of nanoclusters, forming a second layer of nanoclusters over the mask layer; and patterning a second layer of photoresist over the second layer of nanoclusters to open a window overlying a second region of the substrate; using the second layer of photoresist and the second layer of nanoclusters as an etch mask, etching a second region of the mask layer overlying the second region of the substrate to transfer a pattern formed by the second layer of nanoclusters into the second region of the mask layer; and etching the substrate through the mask layer to form a first set of nanopillars in the first region of the substrate and a second set of nanopillars in the second region of the substrate.