Patent ID: 8828297

Claim:
A method of forming an imprint lithography template having patterning features with non-convex cross-sections, the method comprising: forming a first material layer on a substrate; forming a first patterned layer of formable material over the first material layer using an imprint lithography template having a patterning surface of features having convex geometric cross-sections; removing portions of the first patterned layer and the first material layer to form recesses in the first material layer having convex geometric cross-sections; forming a second patterned layer of formable material over the first layer using an imprint lithography template having a patterning surface of features having convex geometric cross-sections, wherein the template features are displaced relative to the corresponding formed recesses in the first layer; removing portions of the second patterned layer and the first material layer to form recesses in the first material layer having non-convex geometric cross-sections; etching the substrate to form recesses in the substrate having non-convex geometric cross-sections; removing remaining portions of the second patterned layer; and removing remaining portions of the first material layer, thereby forming the imprint lithography template with patterning features having non-convex cross-sections.