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  • Floating mechanism of a small liquid marble

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    Author(s)
    Ooi, Chin Hong
    Plackowski, Chris
    Nguyen, Anh V
    Vadivelu, Raja K
    St John, James A
    Dzung, Viet Dao
    Nam-Trung, Nguyen
    Griffith University Author(s)
    St John, James A.
    Dao, Dzung V.
    Nguyen, Nam-Trung
    Vadivelu, Raja
    Ooi, Chin Hong
    Ekberg, Jenny A.
    Year published
    2016
    Metadata
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    Abstract
    Flotation of small solid objects and liquid droplets on water is critical to natural and industrial activities. This paper reports the floating mechanism of liquid marbles, or liquid droplets coated with hydrophobic microparticles. We used X-ray computed tomography (XCT) to acquire cross-sectional images of the floating liquid marble and interface between the different phases. We then analysed the shape of the liquid marble and the angles at the three-phase contact line (TPCL). We found that the small floating liquid marbles follow the mechanism governing the flotation of solid objects in terms of surface tension forces. ...
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    Flotation of small solid objects and liquid droplets on water is critical to natural and industrial activities. This paper reports the floating mechanism of liquid marbles, or liquid droplets coated with hydrophobic microparticles. We used X-ray computed tomography (XCT) to acquire cross-sectional images of the floating liquid marble and interface between the different phases. We then analysed the shape of the liquid marble and the angles at the three-phase contact line (TPCL). We found that the small floating liquid marbles follow the mechanism governing the flotation of solid objects in terms of surface tension forces. However, the contact angles formed and deformation of the liquid marble resemble that of a sessile liquid droplet on a thin, elastic solid. For small liquid marbles, the contact angle varies with volume due to the deformability of the interface.
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    Journal Title
    Scientific Reports
    Volume
    6
    DOI
    https://doi.org/10.1038/srep21777
    Copyright Statement
    © 2016 by the authors. This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material.
    Subject
    Nanotechnology not elsewhere classified
    Publication URI
    http://hdl.handle.net/10072/173369
    Collection
    • Journal articles

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