Patent ID: 8778195
Filing Date: 2014-07-15
Classification: B81C,B82Y,G03F

Abstract:
1. A method to fabricate an imprint mould in three dimensions comprising at least: a) forming at least one trench, of width W and depth h, in a substrate, thereby forming three surfaces including, b) forming alternate layers in the at least one trench, each having at least one portion perpendicular to the substrate, in a first material and in a second material which can be selectively etched relative to the first material, the at least one trench also including a third material limiting or inhibiting deposit of alternate layers formed on the top of the substrate, the alternate layers then being deposited solely in the at least one trench, thinning being performed subsequently so as to expose a field of the substrate, and c) selectively etching said portions of the layers perpendicular to the substrate, thereby forming a topology including at least,