Patent ID: 6392787
Filing Date: 2002-05-21
Classification: B82Y,G02B

Abstract:
A process for fabricating an article, comprising the steps of:(a) providing a substrate, the surface of the substrate defining an x-y plane; (b) forming a layer over the substrate, the layer comprising a lattice comprising shapes formed from a first material and interstices between the shapes substantially filled with a second material, the lattice being substantially planar with the x-y plane; (c) repeating step (b) for second, third, fourth, and fifth layers, wherein the lattice of the second layer is shifted a distance, d, in the x direction relative to the (x,y) location of the lattice of the first layer, wherein the lattice of the third layer is shifted the distance, d, in the y direction relative to the (x,y) location of the lattice of the second layer, wherein the lattice of the fourth layer is shifted the distance, d, in the âˆ’x direction relative to the (x,y) location of the lattice of the third layer, and wherein the lattice of the fifth layer is shifted the distance, d, in the âˆ’y direction relative to the (x,y) location of the lattice of the fourth layer; and (d) etching the second material from the structure.