Method for producing porous body

Details Method for producing porous body Method for producing porous body

2005-08-26

2008-10-07

Picardat, Kevin M (Department: 2822)

Semiconductor device manufacturing: process

Coating of substrate containing semiconductor region or of...

Insulative material deposited upon semiconductive substrate

C438S781000, C438S960000

Reexamination Certificate

active

07432218

ABSTRACT:
A process of a porous body comprises the steps of disposing a first material in which pores are formed by anodization on a substrate to form a first layer, disposing on the first layer a second material which has a hardness lower than that of the first material and an oxide of which is dissolved by an anodization step to form a second layer, forming a concave structure on a surface of the second layer, oxidizing the second layer, and subjecting the first layer to anodization to dissolve the second layer.A magnetic recording medium or a light-emitting element comprises a first layer which is comprised of an oxide of aluminum and comprises a porous portion on a substrate, and a second layer on the first layer which has a hardness lower than that of the first layer and is comprised of a metal element, wherein the pores are packed with a magnetic substance or a light-emitting material.

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