Patent ID: 8017185

Claim:
A process for producing an inorganic film of an inorganic material constituted by a plurality of portions having different crystal structures, comprising the steps of: (a) forming a metal film which has a surface including a plurality of areas which are surface oxidized to different degrees, wherein said plurality of areas which are surface oxidized to different degrees in step (a) are one or more lowly-surface-oxidized areas and one or more highly-surface-oxidized areas which are more highly surface oxidized than the one or more lowly-surface-oxidized areas, (b) forming a solid inorganic film of said inorganic material on said metal film, and (c) removing portions of said solid inorganic film which are formed on said one or more highly-oxidized areas so as to leave a patterned inorganic film having one or more protruding portions in a predetermined pattern.