Method for preparing anodic aluminum oxide-based photonic crystal product and anodic aluminum oxide-based photonic crystal product prepared thereby

Abstract

A method for preparing an anodic aluminum oxide-based photonic crystal product includes: subjecting an aluminum-containing object to a first pretreatment; subjecting the aluminum-containing object to a first anodizing treatment by applying periodic current signals, so as to form first porous aluminum oxide films on the aluminum-containing object along a first direction, the first porous aluminum oxide films each including first nanopore structures; and subjecting the aluminum-containing object to a second anodizing treatment by applying a slowly increasing current signal, followed by constant current signal so as to form a second porous aluminum oxide film beneath an Nfirst porous aluminum oxide film, the second porous aluminum oxide film including second nanopore structures. An anodic aluminum oxide-based photonic crystal product prepared by the method is also provided.