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Water impacting on superhydrophobic macrotextures

Water impacting on superhydrophobic macrotextures
Water impacting on superhydrophobic macrotextures
It has been recently shown that the presence of macrotextures on superhydrophobic materials can markedly modify the dynamics of water impacting them, and in particular significantly reduce the contact time of bouncing drops, compared with what is observed on a flat surface. This finding constitutes a significant step in the maximization of water repellency, since it enables to minimize even further the contact between solid and liquid. It also opens a new axis of research on the design of super-structures to induce specific functions such as anti-freezing, liquid fragmentation and/or recomposition, guiding, trapping and so on. Here we show that the contact time of drops bouncing on a repellent macrotexture takes discrete values when varying the impact speed. This allows us to propose a quantitative analysis of the reduction of contact time and thus to understand how and why macrotextures can control the dynamical properties of bouncing drops.
2041-1723
Gauthier, Anais
a2fd5159-e8f8-458a-b9b0-4ef552ce3460
Symon, Sean
2e1580c3-ba27-46e8-9736-531099f3d850
Clanet, Christophe
f4740c93-2a56-44ba-8d2d-bc13d8c1dfcd
Quere, David
eb908db7-b93f-40ea-b24d-39317fc51898
Gauthier, Anais
a2fd5159-e8f8-458a-b9b0-4ef552ce3460
Symon, Sean
2e1580c3-ba27-46e8-9736-531099f3d850
Clanet, Christophe
f4740c93-2a56-44ba-8d2d-bc13d8c1dfcd
Quere, David
eb908db7-b93f-40ea-b24d-39317fc51898

Gauthier, Anais, Symon, Sean, Clanet, Christophe and Quere, David (2015) Water impacting on superhydrophobic macrotextures. Nature Communications, 6, [8001]. (doi:10.1038/ncomms9001).

Record type: Article

Abstract

It has been recently shown that the presence of macrotextures on superhydrophobic materials can markedly modify the dynamics of water impacting them, and in particular significantly reduce the contact time of bouncing drops, compared with what is observed on a flat surface. This finding constitutes a significant step in the maximization of water repellency, since it enables to minimize even further the contact between solid and liquid. It also opens a new axis of research on the design of super-structures to induce specific functions such as anti-freezing, liquid fragmentation and/or recomposition, guiding, trapping and so on. Here we show that the contact time of drops bouncing on a repellent macrotexture takes discrete values when varying the impact speed. This allows us to propose a quantitative analysis of the reduction of contact time and thus to understand how and why macrotextures can control the dynamical properties of bouncing drops.

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More information

Accepted/In Press date: 7 July 2015
Published date: 11 August 2015

Identifiers

Local EPrints ID: 444774
URI: http://eprints.soton.ac.uk/id/eprint/444774
ISSN: 2041-1723
PURE UUID: 1a6b2822-3bfb-42a9-a731-31140479f9b4

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Date deposited: 04 Nov 2020 17:31
Last modified: 14 Sep 2021 20:42

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Contributors

Author: Anais Gauthier
Author: Sean Symon
Author: Christophe Clanet
Author: David Quere

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