Analysis of nano-channel array fabricated by multi-step anodic aluminum oxide method

Nano-channel array has been fabricated by anodic aluminum oxide(AAO) method with 100 V, 120 V, and 140 V bias voltages and 1, 5-step AAO process in this study. We discussed the growing mechanism of nano-channels and effect of multi-step in AAO process. At least, the distribution and circularity of nano-channel array under different bias voltage were analyzed.