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Combining the Marangoni Effect and the pH-Responsive Superhydrophobicity–Superhydrophilicity Transition to Biomimic the Locomotion Process of the Beetles of Genus Stenus

Authors

  • Meng Xiao,

    1. State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, PR China
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  • Mengjiao Cheng,

    1. State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, PR China
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  • Yajun Zhang,

    Corresponding author
    1. State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, PR China
    • State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, PR China.
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  • Feng Shi

    Corresponding author
    1. State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, PR China
    • State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, PR China
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Abstract

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A functional device to mimic the beetles of the genus Stenus is fabricated. A superhydrophobic hull is employed to replace the body of the beetles, with an attached reservoir to store low-surface-energy compounds to mimic the beetle's pygidial gland, and a pH-responsive mesh acts as its gland end, whose locomotion from static to mobile can respond to the pH value transformation.

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