Patent ID: 6387578
Filing Date: 2002-05-14
Classification: G03F,Y10S

Abstract:
A method for producing a microstructure in a poly(methyl methacrylate) resist attached to a substrate during radiation exposure, comprising the steps of:(a) exposing the resist to radiation in a pattern corresponding to the microstructure, wherein the irradiation suffices to form a latent image in the resist; and (b) heating the resist with the latent image to a temperature between about 40Â° C. and about 65Â° C.; and (c) developing the latent image to produce a poly(methyl methacrylate) microstructure; wherein: (d) the duration of said heating step is sufficient to reduce the surface roughness of the produced microstructure substantially below the surface roughness of a microstructure that would be produced by an otherwise identical method that omits said heating step.