Aluminium oxide nanowires synthesis from high purity aluminium films via two-step anodization

Anodic Aluminium Oxide (AAO) templates were prepared via two-step anodization by using high purity aluminium films. After second anodization, AAO templates were treated under pore-widening process, by being immersed in 5 wt% phosphoric acid. In this study, effect of pore-widening time on structure and pore diameters of AAO templates were investigated and controlling the pore-widening time, alumina nanowires were fabricated. Different techniques, such as Atomic Force Microscopy (AFM), Scanning Electron Microscopy (SEM), and Energy Dispersive Spectrum (EDS) were employed to study the structure of AAO templates and alumina nanowires.