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Non-Stick Droplets

2002; Wiley; Volume: 25; Issue: 9 Linguagem: Inglês

10.1002/1521-4125(20020910)25

1521-4125

David Quéré, Pascale Aussillous,

Fluid Dynamics and Heat Transfer

Chemical Engineering & TechnologyVolume 25, Issue 9 p. 925-928 Research News Non-Stick Droplets D. Quéré, D. Quéré quere@ext.jussieu.fr. Search for more papers by this authorP. Aussillous, P. Aussillous Laboratoire de Physique de la Matière Condensée, UMR 7125 du CNRS, Collège de France, F-75231 Paris Cedex 05 (France).Search for more papers by this author D. Quéré, D. Quéré quere@ext.jussieu.fr. Search for more papers by this authorP. Aussillous, P. Aussillous Laboratoire de Physique de la Matière Condensée, UMR 7125 du CNRS, Collège de France, F-75231 Paris Cedex 05 (France).Search for more papers by this author First published: 03 September 2002 https://doi.org/10.1002/1521-4125(20020910)25:9 3.0.CO;2-0Citations: 35AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat Abstract Recently, many ways (sometimes inspired by nature) for achieving super-hydrophobic surfaces have been proposed in the literature. On such surfaces, water makes a contact angle close to 180°, which produces spectacular properties: droplets do not stick and the surfaces repel water, which bounces when thrown on them. Here, we describe a way to reach the maximum possible contact angle, namely 180°, by texturing the liquid surface instead of the solid one, as it is done for super-hydrophobic solids. It is shown that the contact between such a marble and the solid on which it is deposited is very small, which dramatically reduces the friction when these marbles move. High speeds are thus observed. Together with the fact that the marbles roll as they move, this produces spectacular changes in shape. But the marbles resist to these changes, which can be of interest for practical applications in microfluidics. Citing Literature Volume25, Issue910 September 2002Pages 925-928 RelatedInformation