Highly ordered anodic porous alumina with 13-nm hole intervals using a 2D array of monodisperse nanoparticles as a template

The fabrication of highly ordered anodic porous alumina with 13-nm hole intervals using a two-dimensional (2D) array of nanoparticles as a template was investigated. It was observed that the most appropriate anodizing voltage for pre-textured Al with a 13-nm interval was 3 V. It was found that the degree of ordering of the arrangement of holes was especially dependent on the arrangement of the 2D array of nanoparticles. It was shown that highly ordered anodic porous alumina with an almost ideally ordered domain over an area larger than 2 μm squared could be obtained by utilizing the pretexturing process with Fe2O3 particles.