Patent ID: 7704425

Claim:
Method for transferring a pattern from a template having a structured surface to a target surface of a substrate, comprising: a primary imprint step including creating a polymer stamp having a patterned surface, comprising the step of pressing the structured template surface into a surface layer of a first polymer foil to imprint an inverse of the pattern in the surface layer; and a secondary imprint step including arranging the polymer stamp and a substrate mutually parallel, with the patterned surface facing the target surface substrate, and with an intermediate layer of a material devised to solidify upon exposure to radiation; heating the polymer stamp and the substrate to a temperature T p ; and while maintaining said temperature T p , performing the steps of: pressing the polymer stamp towards the substrate for imprinting the pattern of the patterned surface into said intermediate layer; exposing said layer to radiation for solidifying the intermediate layer; and postbaking the intermediate layer while maintaining said temperature T p , wherein said material is photo chemically amplified, wherein the arranging further comprises arranging the polymer foil and the substrate sandwiched between a stop member and a first side of a flexible membrane, and wherein the pressing of the polymer foil towards the substrate involves applying an overpressure to a medium on a second side of the membrane.