Patent ID: 8486514

Claim:
A nano-imprint device comprising at least: a substrate, having a surface, on the substrate, a plurality of nano-trenches parallel two by two, each nano-trench extending in a longitudinal direction and being delimited in a lateral direction by side walls, the nano-trenches and the side walls being directed substantially perpendicular to said surface of the substrate, each nano-trench comprising a bottom surface, in a cross-sectional view along the longitudinal direction, the bottom surface of each nano-trench has at least one first and one second level in a direction perpendicular to the substrate, respectively of depth h 1 and h 2 >h 1 , measured relative to the top of the side walls, in a cross-sectional view along the lateral direction, the bottom surface of each nano-trench has only one level that is at the depth h 1 or h 2 , and the bottom surfaces of the nano-trenches, of the least deep level h 1 being in a first material, the side walls being in a second material.