Patent ID: 6231744
Filing Date: 2001-05-15
Classification: B82B,B82Y,C30B,H01L,Y10S,Y10T

Abstract:
A method for providing a substrate for use in the fabrication of a nanowire array comprising:a) preparing an aluminum substrate;b) anodizing the aluminum substrate using an acidic electrolyte solution to provide a porous aluminum oxide film on a surface of said aluminum substrate;c) contacting said porous aluminum oxide film with an acid etchant solution for a period of time sufficient to enlarge the cell size of the pores of said aluminum oxide film, said acid selected from the group consisting of H.sub.3 PO.sub.4 and H.sub.2 C.sub.2 O.sub.4 ; andd) contacting said etched film from step (c) with a solution of H.sub.2 SO.sub.4.