Patent ID: 9018649
Filing Date: 2015-04-28
Classification: B81C,B82Y,G11C,H01L,Y10S,Y10T

Abstract:
1. A layered article prepared by a method comprising: forming a block copolymer film on an annealed, miscut surface of a crystalline substrate; wherein the block copolymer film comprises a major phase and a minor phase; and wherein the block copolymer film comprises a bottom surface in contact with the annealed, miscut surface of the crystalline substrate, and a top surface not in contact with the annealed, miscut surface of the crystalline substrate; annealing the block copolymer film; and surface reconstructing the annealed block copolymer film so that the minor phase migrates to the top surface of the block copolymer film, thereby forming voids in the block copolymer film