This article has an erratum: [erratum]

Europhys. Lett.
Volume 47, Number 2, July 1999
Page(s) 220 - 226
Section Condensed matter: structure, mechanical and thermal properties
Published online 01 September 2002
DOI: 10.1209/epl/i1999-00548-y

Europhys. Lett, 47 (2), pp. 220-226 (1999)

Pearl drops

J. Bico 1, C. Marzolin 2 and D. Quéré 1

1 Laboratoire de Physique de la Matière Condensée
URA 792 du CNRS, Collège de France
75231 Paris Cedex 05, France
2 Saint-Gobain Recherche - 39 quai Lucien-Lefranc
93303 Aubervilliers Cedex, France

(received 4 January 1999; accepted in final form 6 May 1999)

PACS. 68.10${\rm -m}$ - Fluid surfaces and fluid-fluid interfaces.
PACS. 68.15${\rm +e}$ - Liquid thin films.


If deposited on a hydrophobic rough substrate, a small drop of water can look like a pearl, with a contact angle close to $180^\circ$. We examine the conditions for observing such a phenomenon and show practical achievements where the contact angle can be predicted and thus quantitatively tuned by the design of the surface microstructure.


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