Fabrication and wetting characteristics of vertically self-aligned ZnO nanorods formed by anodic aluminum oxide template

Tzung-Ta Kao; Yi-Yen Chiu

doi:10.1117/1.JMM.13.1.013003

13 January 2014 Fabrication and wetting characteristics of vertically self-aligned ZnO nanorods formed by anodic aluminum oxide template

Tzung-Ta Kao, Yi-Yen Chiu

Author Affiliations +

Journal of Micro/Nanolithography, MEMS, and MOEMS, Vol. 13, Issue 1, 013003 (January 2014). https://doi.org/10.1117/1.JMM.13.1.013003

Abstract

The growth of vertically self-aligned ZnO nanorods in an anodic aluminum oxide (AAO) template is investigated, along with their wetting characteristics. The highly ordered through-hole AAO template was prepared from an aluminum foil of 99.95% purity in a mixed solution of phosphoric and oxalic acids at 160 V at 1°C, and the resulting pore diameter and channel length are 250 nm and 2 μm, respectively. The vertically self-aligned ZnO nanorods produced with AAO template show the wetting transition time from hydrophobic to superhydrophilic under UV illumination in 9 min. This fast transition time is attributed to the high surface area to volume ratio of the ZnO nanorods and the adsorption enhancement of water molecules by UV-generated electron-hole pairs.

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Tzung-Ta Kao and Yi-Yen Chiu "Fabrication and wetting characteristics of vertically self-aligned ZnO nanorods formed by anodic aluminum oxide template," Journal of Micro/Nanolithography, MEMS, and MOEMS 13(1), 013003 (13 January 2014). https://doi.org/10.1117/1.JMM.13.1.013003

Published: 13 January 2014

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