Effect of a Bubble Gas on the Formation of Self-Organized Pore Arrays in Anodic Aluminum Oxide

Based on different morphologies of both sides of an anodic aluminum oxide (AAO) membrane detached from all Al substrate, we proposed Oat the bubble gas generated at the interface between the At substrate and all aqueous solution plays it critical role in forming self-organized hexagonal pore arrays ill anodic alumina. Such a proposal not, only successfully explains Hie experimental observation that hexagonal pore arrays are ordered better on a flatter substrate at the initial stage of oxidation but also corrects the previously proposed continuous model, plating emphasis on the surface depression for pore initiation and predicting ordered hemispherical pore tips at the interface between the AAO and the Al substrate.