Abstract
Electrochemically anodized TiO 2 nanotube (NT) arrays on Ti foils have been in great interests recently attributing to the wide applications. The net growth rate of TiO 2 NT array is determined by electrochemical etching of Ti foil and chemical dissolution of the formed TiO 2 NTs. While the TiO 2 NT growth becomes a diffusion controlled process after certain growth time. Here, we report the influence of ultrasound on the growth process of TiO 2 NT arrays. The results indicate that ultrasound can significantly alter the relative rates of these reactions and adjust the geometries of the TiO 2 NT arrays.
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