Electrochemical Fabrication of Highly Ordered Semiconductor and Metallic Nanowire Arrays

In this article, we report the fabrication of highly ordered TiO 2 nanowire arrays by anodic oxidative hydrolysis of TiCl 3 within a hexagonal close-packed nanochannel alumina (NCA). The single-crystalline anatase TiO 2 nanowires with diameters about 15 nm and lengths about 6 μm are obtained after annealing at 500 °C. Finally, the fabrication and characterization of highly ordered Au and Ni nanowire arrays with selectable diameters are also reported.