Contact time of a bouncing drop

Denis Richard, Christophe Clanet and David Quéré ()
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Denis Richard: Laboratoire de Physique de la Matière Condensée, URA 792 du CNRS, Collège de France
Christophe Clanet: Institut de Recherche sur les Phénomènes Hors Équilibre, UMR 6594 du CNRS
David Quéré: Laboratoire de Physique de la Matière Condensée, URA 792 du CNRS, Collège de France

Nature, 2002, vol. 417, issue 6891, 811-811

Abstract: Abstract When a liquid drop lands on a solid surface without wetting it, it bounces with remarkable elasticity1,2,3. Here we measure how long the drop remains in contact with the solid during the shock, a problem that was considered by Hertz4 for a bouncing ball. Our findings could help to quantify the efficiency of water-repellent surfaces (super-hydrophobic solids5) and to improve water-cooling of hot solids, which is limited by the rebounding of drops6 as well as by temperature effects.

Date: 2002
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DOI: 10.1038/417811a

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