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    Free running droplets on packed powder beds

    Access Status
    Open access via publisher
    Authors
    Whitby, C.
    Bian, X.
    Sedev, Rossen
    Date
    2013
    Type
    Conference Paper
    
    Metadata
    Show full item record
    Citation
    Whitby, C. and Bian, X. and Sedev, R. 2013. Free running droplets on packed powder beds. 1542 (1): pp. 1043-1046.
    Source Title
    AIP Conference Proceedings
    DOI
    10.1063/1.4812113
    ISBN
    9780735411661
    School
    Department of Chemical Engineering
    URI
    http://hdl.handle.net/20.500.11937/53223
    Collection
    • Curtin Research Publications
    Abstract

    We observed that water drops placed on horizontal beds of fine molybdenite particles move freely over the bed surface for about 1 second. The drops collect an irregular coating of unevenly distributed particles as they bounce and roll. We manipulated the distance that the drops travel, and hence the area of the droplet surface coated with particles, by varying the water surface tension and the kinetic energy of the initial droplet impact on the bed surface. Our results highlight the role of contact angle hysteresis in particle encapsulation of liquid drops.

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