Patent ID: 8425982

Claim:
A method of forming a nanostructured polymer material on a substrate, comprising: depositing a self-assembling lamellar-phase block copolymer composition within a trench in a material on a substrate, the trench having a length, a floor that is neutral wetting to both blocks of a block copolymer material of the self-assembling lamellar-phase block copolymer composition, and opposing sidewalls and ends that are preferentially wetting to a first block of the block copolymer material, and the self-assembling lamellar-phase block copolymer composition comprising a blend of the block copolymer material and an ionic liquid; and annealing the self-assembling lamellar-phase block copolymer composition to self-assemble the self-assembling lamellar-phase block copolymer composition into alternating lamellar domains of the first block and a second block of the block copolymer material oriented perpendicular to the floor of the trench and extending the length of the trench.