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Growth dynamics and gas transport mechanism of nanobubbles in graphene liquid cells

Author

Listed:
  • Dongha Shin

    (College of Natural Science, Seoul National University)

  • Jong Bo Park

    (College of Natural Science, Seoul National University)

  • Yong-Jin Kim

    (College of Natural Science, Seoul National University
    University of Manchester)

  • Sang Jin Kim

    (College of Natural Science, Seoul National University)

  • Jin Hyoun Kang

    (College of Natural Science, Seoul National University)

  • Bora Lee

    (College of Natural Science, Seoul National University)

  • Sung-Pyo Cho

    (National Center for Inter-University Research Facilities, Seoul National University)

  • Byung Hee Hong

    (Graduate School of Convergence Science and Technology, Seoul National University)

  • Konstantin S Novoselov

    (University of Manchester)

Abstract

Formation, evolution and vanishing of bubbles are common phenomena in nature, which can be easily observed in boiling or falling water, carbonated drinks, gas-forming electrochemical reactions and so on. However, the morphology and the growth dynamics of the bubbles at nanoscale have not been fully investigated owing to the lack of proper imaging tools that can visualize nanoscale objects in the liquid phase. Here, we demonstrate for the first time that the nanobubbles in water encapsulated by graphene membrane can be visualized by in-situ ultra-high vacuum transmission electron microscopy. Our microscopic results indicate two distinct growth mechanisms of merging nanobubbles and the existence of a critical radius of nanobubbles that determines the unusually long stability of nanobubbles. Interestingly, the gas transport through ultrathin water membranes at nanobubble interface is free from dissolution, which is clearly different from conventional gas transport that includes condensation, transmission and evaporation.

Suggested Citation

  • Dongha Shin & Jong Bo Park & Yong-Jin Kim & Sang Jin Kim & Jin Hyoun Kang & Bora Lee & Sung-Pyo Cho & Byung Hee Hong & Konstantin S Novoselov, 2015. "Growth dynamics and gas transport mechanism of nanobubbles in graphene liquid cells," Nature Communications, Nature, vol. 6(1), pages 1-6, May.
    • Handle: RePEc:nat:natcom:v:6:y:2015:i:1:d:10.1038_ncomms7068
    DOI: 10.1038/ncomms7068
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