Enhanced Dip Coating on a Soft Substrate
BERTIN, Vincent
Laboratoire Ondes et Matière d'Aquitaine [LOMA]
Gulliver (UMR 7083)
University of Twente
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Laboratoire Ondes et Matière d'Aquitaine [LOMA]
Gulliver (UMR 7083)
University of Twente
BERTIN, Vincent
Laboratoire Ondes et Matière d'Aquitaine [LOMA]
Gulliver (UMR 7083)
University of Twente
< Reduce
Laboratoire Ondes et Matière d'Aquitaine [LOMA]
Gulliver (UMR 7083)
University of Twente
Language
en
Article de revue
This item was published in
Physical Review Fluids. 2022-10, vol. 7, n° 10, p. L102002
American Physical Society
English Abstract
A solid, withdrawn from a wetting liquid bath, entrains a thin liquid film. This simple process, first described by Landau, Levich and Derjaguin (LLD), is commonly observed in everyday life. It also plays a central role ...Read more >
A solid, withdrawn from a wetting liquid bath, entrains a thin liquid film. This simple process, first described by Landau, Levich and Derjaguin (LLD), is commonly observed in everyday life. It also plays a central role in liquid capture by animals, and is widely used for surface-coating purposes in industry. Motivated by the emerging interest in the mechanics of very soft materials, and in particular the resulting elastocapillary coupling, we develop a dip-coating model that accounts for the additional presence of a soft solid layer atop the rigid plate. The elastic response of this soft layer is described by a Winkler's foundation. Using a combination of numerical, scaling and asymptotic-matching methods, we find a new softness-dependent power-law regime for the thickness of entrained liquid at small capillary number, which corresponds to a modified physics at play in the dynamic meniscus. The crossover between this regime and the classical dip-coating one occurs when the substrate's deformation is comparable to the thickness of the entrained liquid film.Read less <
ANR Project
Mouvement brownien au voisinage d'interfaces molles - ANR-21-ERCC-0010
Capteur Interférométrique de Contraintes de Surface - ANR-21-CE06-0029
Capteur Interférométrique de Contraintes de Surface - ANR-21-CE06-0029
Origin
Hal imported