Patent ID: 8729215

Claim:
A method of forming a structure comprising: forming a three-dimensional structure on a surface of a substrate, where said three-dimensional structure comprises the sacrificial polymer composition comprising: a polycarbonate polymer comprising repeating units derived from at least one polycyclic 2,3-diol monomer, such monomer represented by any of Formulae A1, B1 or C1: where, R 4 is hydrogen, alkyl, cycloalkyl, heteroalkyl, heterocycloalkyl, aryl, heteroaryl and aralkyl; and an acid generator selected from photoacid generators, thermal acid generators and combinations thereof; applying an overcoat layer over said three-dimensional structure; activating said acid generator, thereby at least partially depolymerizing said polycarbonate polymer; and decomposing said depolymerized polycarbonate polymer at an elevated temperature, thereby forming a three-dimensional space interposed between said overcoat layer and said substrate.