Self-Ordering of Cell Configuration of Anodic Porous Alumina with Large-Size Pores in Phosphoric Acid Solution

Large cell-sized anodic porous alumina with long-range ordering was fabricated using phosphoric acid solution. Self-ordering of the anodic alumina took place under long-period constant voltage anodization at 195 V, which generated the self-ordered anodic porous alumina with a cell size of 500 nm.