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Two-step growth of superhydrophobic ZnO nanorod array films

Gong Mao-Gang Xu Xiao-Liang Cao Zi-Li Liu Yuan-Yue Zhu Hai-Ming

Two-step growth of superhydrophobic ZnO nanorod array films

Gong Mao-Gang, Xu Xiao-Liang, Cao Zi-Li, Liu Yuan-Yue, Zhu Hai-Ming
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  • Received Date:  27 December 2007
  • Accepted Date:  13 August 2008
  • Published Online:  20 March 2009

Two-step growth of superhydrophobic ZnO nanorod array films

  • 1. 中国科学院中国科学技术大学结构分析重点实验室,合肥 230026;中国科学技术大学物理系,合肥 230026

Abstract: Well-aligned ZnO nanorod array films (ZnO-NAFs) were coatedon common glass substrate by two-step method. A thin buffer layer of ZnO seeds were first deposited via RF magnetron sputtering,the ZnO-NAFS were then grown in a simple aqueous solution. We report a surface-modification induced hydrophilicity to superhydrophobicity transiton on ZnO-NAFs. The sample was characterized by scanning electron microscopy (SEM). The surfaces of ZnO-NAFs was superhydrophobic with a three-phase contact angle of 151°±0.5°, while the sliding angle is 7°. The superhydrophobicity of ZnO-NAFs was validated by Cassie's model.

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