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Issue 19, 2018
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Drop on a bent fibre

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Inspired by the huge droplets attached on cypress tree leaf tips after rain, we find that a bent fibre can hold significantly more water in the corner than a horizontally placed fibre (typically up to three times or more). The maximum volume of the liquid that can be trapped is remarkably affected by the bending angle of the fibre and surface tension of the liquid. We experimentally find the optimal included angle (∼36°) that holds the most water. Analytical and semi-empirical models are developed to explain these counter-intuitive experimental observations and predict the optimal angle. The data and models could be useful for designing microfluidic and fog harvesting devices.

Graphical abstract: Drop on a bent fibre

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The article was received on 27 Aug 2017, accepted on 06 Mar 2018 and first published on 15 Mar 2018

Article type: Paper
DOI: 10.1039/C7SM01729D
Citation: Soft Matter, 2018,14, 3724-3729

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    Drop on a bent fibre

    Z. Pan, F. Weyer, W. G. Pitt, N. Vandewalle and T. T. Truscott, Soft Matter, 2018, 14, 3724
    DOI: 10.1039/C7SM01729D

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