The Morphology and Stability of Nanoscopic Gas States at Water/Solid Interfaces

Authors

  • Dr. Lijuan Zhang,

    1. Shanghai Institute of Applied Physics, Chinese Academy of Sciences, No.239 Zhangheng Road, 201204 Shanghai (China)
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  • Dr. Chunlei Wang,

    1. Shanghai Institute of Applied Physics, Chinese Academy of Sciences, No.239 Zhangheng Road, 201204 Shanghai (China)
    2. Shanghai Institute of Applied Physics, Chinese Academy of Sciences, No.2019 Baojia Road, 201800 Shanghai (China)
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  • Prof. Dr. Renzhong Tai,

    1. Shanghai Institute of Applied Physics, Chinese Academy of Sciences, No.239 Zhangheng Road, 201204 Shanghai (China)
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  • Prof. Dr. Jun Hu,

    Corresponding author
    1. Shanghai Institute of Applied Physics, Chinese Academy of Sciences, No.2019 Baojia Road, 201800 Shanghai (China)
    • Shanghai Institute of Applied Physics, Chinese Academy of Sciences, No.2019 Baojia Road, 201800 Shanghai (China)
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  • Prof. Dr. Haiping Fang

    Corresponding author
    1. Shanghai Institute of Applied Physics, Chinese Academy of Sciences, No.2019 Baojia Road, 201800 Shanghai (China)
    • Shanghai Institute of Applied Physics, Chinese Academy of Sciences, No.2019 Baojia Road, 201800 Shanghai (China)
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Abstract

Nanoscale gas bubbles have surprising stability at water/solid surfaces. Herein, we summarize progress made on investigating gases at the water/solid interfaces on the nanometer scale. The gas states include nanobubbles, micropancakes, multiple gas layers and their coexistence; these were investigated from experimental and theoretical aspects. The stability of nanoscale gas bubbles may be attributed to high inner density, as observed in molecular dynamic simulations and theoretical analysis. Moreover, it was found that there were maximal length scales for stable nanobubbles, namely, 100 nm high and a curvature radius of 2 μm.

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