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Journal of Nanotechnology
Volume 2017, Article ID 5104841, 4 pages
Research Article

Controllable Growth of the ZnO Nanorod Arrays on the Al Substrate and Their Reversible Wettability Transition

1School of Physics and Electronic Information, Huaibei Normal University, Huaibei 235000, China
2Department of Physics, Heze University, Heze 274015, China

Correspondence should be addressed to Qinzhuang Liu; nc.ude.ctsu.liam@uilzq

Received 8 December 2016; Accepted 17 January 2017; Published 23 February 2017

Academic Editor: Paresh Chandra Ray

Copyright © 2017 Hong Li et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


High-quality ZnO nanorod arrays are formed using the ZnO nanoflakes on the Al substrate as seed layer. A reversible wettability transition can be easily achieved via alternation of UV irradiation and dark storage. The physical adsorption of the water molecules on the surface of ZnO nanorod arrays is considered to be responsible for this transition, which is confirmed by X-ray photoelectron spectroscopy.