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Elastocapillary levelling of thin viscous films on soft substrates

dc.contributor.authorRIVETTI, Marco
dc.contributor.authorBERTIN, Vincent
hal.structure.identifierLaboratoire Ondes et Matière d'Aquitaine [LOMA]
dc.contributor.authorSALEZ, Thomas
dc.contributor.authorHUI, Chung-Yuen
dc.contributor.authorLINNE, Christine
dc.contributor.authorARUTKIN, Maxence
dc.contributor.authorWU, Haibin
dc.contributor.authorRAPHAEL, Elie
dc.contributor.authorBÄUMCHEN, Oliver
dc.date.issued2017-09
dc.identifier.issn2469-990X
dc.description.abstractEnA thin liquid film with non-zero curvature at its free surface spontaneously flows to reach a flat configuration, a process driven by Laplace pressure gradients and resisted by the liquid's viscosity. Inspired by recent progresses on the dynamics of liquid droplets on soft substrates, we here study the relaxation of a viscous film supported by an elastic foundation. Experiments involve thin polymer films on elastomeric substrates, where the dynamics of the liquid-air interface is monitored using atomic force microscopy. A theoretical model that describes the coupled evolution of the solid-liquid and the liquid-air interfaces is also provided. In this soft-levelling configuration, Laplace pressure gradients not only drive the flow, but they also induce elastic deformations on the substrate that affect the flow and the shape of the liquid-air interface itself. This process represents an original example of elastocapillarity that is not mediated by the presence of a contact line. We discuss the impact of the elastic contribution on the levelling dynamics and show the departure from the classical self-similarities and power laws observed for capillary levelling on rigid substrates.
dc.language.isoen
dc.publisherAmerican Physical Society
dc.title.enElastocapillary levelling of thin viscous films on soft substrates
dc.typeArticle de revue
dc.identifier.doi10.1103/PhysRevFluids.2.094001
dc.subject.halPhysique [physics]/Matière Condensée [cond-mat]/Matière Molle [cond-mat.soft]
dc.subject.halPhysique [physics]/Physique [physics]/Dynamique des Fluides [physics.flu-dyn]
dc.subject.halPhysique [physics]/Mécanique [physics]/Mécanique des solides [physics.class-ph]
dc.subject.halPhysique [physics]/Mécanique [physics]/Mécanique des matériaux [physics.class-ph]
dc.subject.halPhysique [physics]/Mécanique [physics]/Mécanique des fluides [physics.class-ph]
dc.identifier.arxiv1703.10551
bordeaux.journalPhysical Review Fluids
bordeaux.volume2
bordeaux.issue9
bordeaux.peerReviewedoui
hal.identifierhal-03134691
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03134691v1
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