Drop impact on a flexible fiber

Abstract : When droplets impact fibrous media, the liquid can be captured by the fibers or contact then break away. Previous studies have shown that the efficiency of drop capture by a rigid fiber depends on the impact velocity and defined a threshold velocity below which the drop is captured. However, it is necessary to consider the coupling of elastic and capillary effects to achieve a greater understanding of the capture process for soft substrates. Here, we study experimentally the dynamics of a single drop impacting on a thin flexible fiber. Our results demonstrate that the threshold capture velocity depends on the flexibility of fibers in a non-monotonic way. We conclude that tuning the mechanical properties of fibers can optimize the efficiency of droplet capture.
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Dernière modification le : mardi 11 décembre 2018 - 01:23:15
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Emilie Dressaire, Alban Sauret, François Boulogne, Howard A. Stone. Drop impact on a flexible fiber. Soft Matter, Royal Society of Chemistry, 2016, 12, pp.200-208. 〈http://pubs.rsc.org/en/content/articlelanding/2015/sm/c5sm02246k#!divAbstract〉. 〈10.1039/C5SM02246K〉. 〈hal-01253597〉

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