Imprint lithographic method for making a polymeric structure

A method for making a polymeric structure, the method comprising:

• coating a surface of a first and a second mold with different anti-stick coatings with differing surface energies;
• spin-coating a polymer onto said surface of said first mold, wherein said surface of said first mold comprises a plurality of projections extending along a length of said first mold;
• aligning said second mold above said first mold, wherein a surface of said second mold comprises a plurality of projections extending along a length of said second mold, wherein said plurality of projections of said second mold are disposed directly above corresponding projections of said plurality of projections of said first mold;
• pressing said second mold onto said polymer-coated first mold at a temperature above a glass transition temperature of said polymer;
• forming frangible portions in said polymer as said plurality of projections of said second mold are pressed into said plurality of projections of said first mold;
• separating said second mold from said first mold below said glass transition temperature of said polymer forming three-dimensional structures that are T-bar shaped;
• transferring said T-bar shaped structures to one of said first and said second mold with a higher surface energy due to a difference in surface energies of said first mold and said second mold;
• aligning said T-bar structures and said frangible portions of said polymer film attached to one of said first and said second mold with said higher surface energy above a treated substrate;
• and
• pressing one of said first and said second mold with said higher surface energy with said attached polymer film onto said substrate at a temperature below said glass transition temperature of said polymer, wherein said projections of one of said first and said second mold with said higher surface energy apply a shear force to said frangible portions thereby causing said frangible portions to break, wherein said frangible portions remain adhered to one of said first and said second mold with said higher surface energy, wherein said T-bar structures separate from one of said first and said second mold with said higher surface energy and adhere to said substrate due to a compressive pressure force from pressing one of said first and said second mold with said higher surface energy onto said substrate as well as due to said substrate comprising a higher surface energy than said surface energy of one of said first and said second mold with said higher surface energy.