ANODICALLY OXIDIZED POROUS ALUMINA AND PRODUCING METHOD THEREFOR

摘要

PROBLEM TO BE SOLVED: To provide anodically oxidized porous alumina that has pores regularly disposed at narrower spaces than those in normal anodically-oxidized porous alumina, and does not make a condition of regulating pore disposition determine a lower limit of the space, though the pores are regularly disposed by self-organization and the lower limit is determined by the condition in normal anodically-oxidized porous alumina, and to provide a manufacturing method therefor. SOLUTION: The method for producing the anodically oxidized porous alumina having a 1/√3 times narrower space between pores than the original porous alumina comprises: preparing porous alumina having porous portions through the first step of anodic oxidation; removing the metallic Al of the obtained porous alumina; etching preferentially salients corresponding to the porous portions, on the surface of a barrier layer in the bottom surface of the obtained porous alumina; producing a mold having a reversed structure of the porous alumina; transcripting the structure of the mold onto the other Al; and performing the second step of anodic oxidation onto the other Al. The anodically oxidized porous alumina having the regular pore disposition is thus manufactured by the method. COPYRIGHT: (C)2005,JPO&NCIPI