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Issue 19, 2018
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Rotation of a floating hydrophobic disk: influence of line tension

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Abstract

The rotation of a sub-millimeter size disk over a water bath is reported. The origin of the rotation arises from the transfer of angular momentum from a plane wave diffracted by an asymmetrical picture printed on the disk. Because of its hydrophobic character, the viscous friction contribution to the rotational motion of the object floating on the air/liquid interface is weak. From the driving optical torque and the steady-state rotation, we measure the contribution of the line tension in the femto-Newton range.

Graphical abstract: Rotation of a floating hydrophobic disk: influence of line tension

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Publication details

The article was received on 12 Feb 2018, accepted on 15 Apr 2018 and first published on 16 Apr 2018


Article type: Paper
DOI: 10.1039/C8SM00309B
Citation: Soft Matter, 2018,14, 3829-3833
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    Rotation of a floating hydrophobic disk: influence of line tension

    J. Emile, H. Tabuteau and O. Emile, Soft Matter, 2018, 14, 3829
    DOI: 10.1039/C8SM00309B

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