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Surface Wettability of Nanostructured Zinc Oxide Films

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Abstract

Zinc oxide (ZnO) nanograin and nanorod films were prepared by magnetron sputter deposition and an aqueous solution growth method. Their surface wettability was studied in relation to their surface morphologies. While the surfaces of both films were hydrophobic, the nanorod films exhibited higher surface hydrophobicity. A superhydrophobic surface was obtained on a ZnO nanorod film with a water contact angle of 151 deg. Results have shown that their surface wettability was influenced by the morphology of ZnO nanostructures, including the grain size, the length, and density of nanorods. Both types of ZnO films showed switchable wettability under ultraviolet irradiation and dark storage.

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Authors and Affiliations

  1. Department of Chemical & Materials Engineering, Faculty of Engineering, The University of Auckland, Private Bag 92019, Auckland, New Zealand

    Jie Han & Wei Gao

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  1. Jie Han
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  2. Wei Gao
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Correspondence to Wei Gao.

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Han, J., Gao, W. Surface Wettability of Nanostructured Zinc Oxide Films. J. Electron. Mater. 38, 601–608 (2009). https://doi.org/10.1007/s11664-008-0615-0

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  • DOI: https://doi.org/10.1007/s11664-008-0615-0

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