Patent ID: 8754400
Filing Date: 2014-06-17
Classification: B81C,B82Y,H01L,Y10T

Abstract:
1. A structure comprising a two dimensional array of unit structures that constitute nanoscale uniform-width trenches located in a pattern-containing layer on a substrate, said pattern-containing layer comprising a same material throughout an entirety thereof, wherein each nanoscale uniform-width trench within said two dimensional array includes a trench bottom surface, a first pair of parallel sidewalls extending from said trench bottom surface to a topmost surface of, and directly adjoined to, said pattern-containing layer and consisting of sidewalls of said same material, and a second pair of parallel sidewalls extending from said trench bottom surface to said topmost surface of, and directly adjoined to, said pattern-containing layer and consisting of additional sidewalls of said same material, wherein said unit structures are repeated along a first direction that is perpendicular to said first pairs of parallel sidewalls and along a second direction that is perpendicular to said second pairs of parallel sidewalls and is different from said first direction within said two dimensional array, and wherein, within said two dimensional array, each first pair of parallel sidewalls is separated by a first sublithographic distance that is invariant under lateral translation along a direction perpendicular to said first direction and each second pair of parallel sidewalls is separated by a second sublithographic distance that is invariant under lateral translation along a direction perpendicular to said second direction, wherein said first sublithographic distance is less than 45 nm, and said second sublithographic distance is less than 45 nm.