Issue |
Europhys. Lett.
Volume 62, Number 2, April 2003
|
|
---|---|---|
Page(s) | 237 - 243 | |
Section | Condensed matter: structure, mechanical and thermal properties | |
DOI | https://doi.org/10.1209/epl/i2003-00340-1 | |
Published online | 01 April 2003 |
Water spring: A model for bouncing drops
1
Laboratoire de Physique de la Matière Condensée, UMR 7125
du CNRS Collège de France - 75231 Paris Cedex 05, France
2
Department of Physics, Graduate School of Humanities and
Sciences Ochanomizu University - 2-1-1,
Otsuka, Bunkyo-ku, Tokyo 112-8610, Japan
3
Institut de Recherche sur les Phénomènes Hors Equilibre,
UMR 6594 du CNRS BP 146, 13384 Marseille Cedex, France
Received:
19
November
2002
Accepted:
19
February
2003
It has been shown that a water drop can bounce persistently, when thrown on a super-hydrophobic substrate. We present here scaling arguments which allow us to predict the maximal deformation and the contact time of the drop. This approach is completed by a model describing the flow inside the drop, and by original experimental data.
PACS: 68.03.Cd – Surface tension and related phenomena / 68.08.Bc – Wetting / 47.85.Dh – Hydrodynamics, hydraulics, hydrostatics
© EDP Sciences, 2003
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