Hierarchical ZnO Structure with Superhydrophobicity and High Adhesion

Authors

  • Dr. Liqiu Zheng,

    Corresponding author
    1. Nanotechnology Center, University of Arkansas at Little Rock, Little Rock, AR 72204 (USA), Fax: (+1) 501-683-7601
    • Nanotechnology Center, University of Arkansas at Little Rock, Little Rock, AR 72204 (USA), Fax: (+1) 501-683-7601
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  • Prof. Zhongrui Li,

    Corresponding author
    1. Nanotechnology Center, University of Arkansas at Little Rock, Little Rock, AR 72204 (USA), Fax: (+1) 501-683-7601
    • Nanotechnology Center, University of Arkansas at Little Rock, Little Rock, AR 72204 (USA), Fax: (+1) 501-683-7601
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  • Dr. Shawn Bourdo,

    1. Nanotechnology Center, University of Arkansas at Little Rock, Little Rock, AR 72204 (USA), Fax: (+1) 501-683-7601
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  • Viney Saini,

    1. Nanotechnology Center, University of Arkansas at Little Rock, Little Rock, AR 72204 (USA), Fax: (+1) 501-683-7601
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  • Dr. Charles Ryerson,

    1. Terrestrial and Cryospheric Sciences Branch Cold Regions, Research & Engineering Laboratory, U.S. Army Corps of Engineers, Hanover, NH03755-1290 (USA)
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  • Prof. Alexandru S. Biris

    Corresponding author
    1. Nanotechnology Center, University of Arkansas at Little Rock, Little Rock, AR 72204 (USA), Fax: (+1) 501-683-7601
    • Nanotechnology Center, University of Arkansas at Little Rock, Little Rock, AR 72204 (USA), Fax: (+1) 501-683-7601
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Abstract

original image

Any petal but a lotus: The hierarchically structured ZnO surface presents superhydrophobicity and a distinctive solid–liquid adhesion that can be attributed to the suitable size of nanostructures in combination with microscopic structures (see picture). Although the surface is superhydrophobic, water droplets continue to cling to the surface even when it is overturned.

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