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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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Submitted on : Monday, January 11, 2016 - 9:55:57 AM
Last modification on : Sunday, June 26, 2022 - 9:51:33 AM
Long-term archiving on: : Tuesday, April 12, 2016 - 11:06:55 AM


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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. ⟨10.1039/C5SM02246K⟩. ⟨hal-01253597⟩



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