Fluctuations et forces de surface dans les transitions de mouillage

Abstract : We study the effect of surface forces and fluctuations in wetting transitions. We present the first successful experimental attempt to locate the transition point between the standard first-order wetting and the long-range critical wetting: a critical end point, observed in a mixture of pentane and hexane which is deposited on an aqueous solution of glucose. Furthermore, we present the first direct measurement of the contact angle in the intermediate wetting state (frustrated-complete wetting) in the sequential-wetting scenario of hexane on brine and compare to theoretical predictions. Moreover,we show that surface fluctuations can lead to short range critical wetting. Finally, we confine thermal fluctuations into a wetting film leading to an analogous of the Casimir effect.
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https://tel.archives-ouvertes.fr/tel-00007414
Contributor : Salima Rafaï <>
Submitted on : Tuesday, November 16, 2004 - 10:28:10 AM
Last modification on : Tuesday, May 14, 2019 - 11:02:16 AM
Long-term archiving on : Thursday, September 13, 2012 - 1:00:24 PM

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  • HAL Id : tel-00007414, version 1

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Salima Rafaï. Fluctuations et forces de surface dans les transitions de mouillage. Analyse de données, Statistiques et Probabilités [physics.data-an]. Université Paris-Diderot - Paris VII, 2004. Français. ⟨tel-00007414⟩

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