Patent ID: 9335629
Filing Date: 2016-05-10
CPC Classification: B81C,B82Y,G03F,Y10T

Claim Text:
1. A layered article, comprising: a polymer layer comprising a topographically patterned surface formed by contact with a topographically patterned surface of a single crystal substrate; wherein the topographically patterned surface of the single crystal substrate is a substantially planar surface at least one degree removed from any crystallographic plane of the single crystal substrate; and a block copolymer film comprising a surface in contact with the patterned surface of the polymer layer; wherein the block copolymer film consists of a block copolymer selected from the group consisting of polystyrene-b-poly(4-vinylpyridine)s, polystyrene-b-poly(2-vinylpyridine)s, and polystyrene-b-poly(ethylene oxide)s wherein the block copolymer film is an annealed block copolymer film and the annealed block copolymer film comprises a hexagonal array of cylindrical microdomains.