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Capillary deformation of ultrathin glassy polymer films by air nanobubbles

dc.contributor.authorREN, Shuai
dc.contributor.authorPEDERSEN, Christian
dc.contributor.authorCARLSON, Andreas
hal.structure.identifierLaboratoire Ondes et Matière d'Aquitaine [LOMA]
dc.contributor.authorSALEZ, Thomas
dc.contributor.authorWANG, Yuliang
dc.date.issued2020
dc.identifier.issn2643-1564
dc.description.abstractEnConfined glasses and their anomalous interfacial rheology raise important questions in fundamental research and numerous practical applications. In this work, we study the influence of interfacial air nanobubbles on the free surface of ultrathin high-molecular-weight glassy polystyrene films immersed in water, in ambient conditions. In particular, we reveal the counterintuitive fact that a soft nanobubble is able to deform the surface of a rigid glass, forming a nanocrater with a depth that increases with time. By combining in-situ atomic-force-microscopy measurements and a modified lubrication model for the liquid-like layer at the free surface of the glass, we demonstrate that the capillary pressure in the nanobubble together with the liquid-like layer at the free surface of the glass determine the spatiotemporal growth of the nanocraters. Finally, from the excellent agreement between the experimental profiles and the numerical solutions of the governing glassy thin-film equation, we are able to precisely extract the surface mobility of the glass. In addition to revealing and quantifying how surface nanobubbles deform immersed glasses, until the latter eventually dewet from their substrates, our work provides a novel, precise, and simple measurement of the surface nanorheology of glasses.
dc.language.isoen
dc.publisherAmerican Physical Society
dc.title.enCapillary deformation of ultrathin glassy polymer films by air nanobubbles
dc.typeArticle de revue
dc.identifier.doi10.1103/PhysRevResearch.2.043166
dc.subject.halPhysique [physics]/Matière Condensée [cond-mat]/Matière Molle [cond-mat.soft]
dc.subject.halPhysique [physics]/Mécanique [physics]/Mécanique des matériaux [physics.class-ph]
dc.subject.halPhysique [physics]/Physique [physics]/Dynamique des Fluides [physics.flu-dyn]
dc.subject.halPhysique [physics]/Mécanique [physics]/Mécanique des fluides [physics.class-ph]
dc.identifier.arxiv2001.09031
bordeaux.journalPhysical Review Research
bordeaux.page043166
bordeaux.volume2
bordeaux.peerReviewedoui
hal.identifierhal-02450432
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02450432v1
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