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In Situ Fully Light-Driven Switching of Superhydrophobic Adhesion

Authors

  • Chao Li,

    1. Department of Materials Science, Fudan University, Shanghai 200433, P. R. China
    2. Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
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  • Yuanyuan Zhang,

    1. Department of Materials Science, Fudan University, Shanghai 200433, P. R. China
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  • Jie Ju,

    1. Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
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  • Futao Cheng,

    1. Department of Materials Science, Fudan University, Shanghai 200433, P. R. China
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  • Mingjie Liu,

    1. Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
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  • Lei Jiang,

    1. Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
    2. School of Chemistry and Environment, Beijing University of Aeronautics and Astronautics, Beijing 100191, P. R. China
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  • Yanlei Yu

    Corresponding author
    1. Department of Materials Science, Fudan University, Shanghai 200433, P. R. China
    • Department of Materials Science, Fudan University, Shanghai 200433, P. R. China.

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Abstract

An in situ fully light-driven switching of superhydrophobic adhesion is demonstrated based on simply spin-coating a hydrophobic azo-polymer on an optimized micro-nanopost arrayed silicon substrate. Furthermore, the detailed designing principles are discussed, which might shed light on efficient exploitation of superhydrophobic liquid/solid interfaces for smart microfluidic control.

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