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Light-induced deformation and instability of a liquid interface. II. Dynamics

hal.structure.identifierCentre de physique moléculaire optique et hertzienne [CPMOH]
dc.contributor.authorWUNENBURGER, Régis
hal.structure.identifierCentre de physique moléculaire optique et hertzienne [CPMOH]
hal.structure.identifierDAM Île-de-France [DAM/DIF]
dc.contributor.authorCASNER, Alexis
hal.structure.identifierCentre de physique moléculaire optique et hertzienne [CPMOH]
dc.contributor.authorDELVILLE, Jean-Pierre
dc.date.issued2006
dc.identifier.issn1539-3755
dc.description.abstractEnWe study the dynamics of the deformation of a soft liquid-liquid interface by the optical radiation pressure of a focused cw gaussian laser beam. We measured the temporal evolution of both the hump height and the hump curvature by direct observation and by detecting the focusing effect of the hump acting as a lens. Extending the results of Yoshitake et al. [J. Appl. Phys. 97, 024901 (2005)] to the case of liquid-liquid interfaces and to the Bo ' 1 regime (Bo = (!0/`c)2, where !0 is the beam waist and `c the capillary length), we show that, in the Bo 1 and Bo ' 1 ranges, the small amplitude deformations are correctly described by a linear hydrodynamic theory predicting an overdamped dynamics. We also study the dynamics of the large amplitude interface deformations at the onset of the opto-hydrodynamic instability [Phys. Rev. Lett. 90, 144503 (2003)]. Using a simple, phenomenological model for the nonlinear evolution of the hump height, we interpret the observed interface dynamics at the instability onset as the signature of an imperfect subcritical instability.
dc.language.isoen
dc.publisherAmerican Physical Society
dc.title.enLight-induced deformation and instability of a liquid interface. II. Dynamics
dc.typeArticle de revue
dc.identifier.doi10.1103/PhysRevE.73.036315
dc.subject.halPhysique [physics]/Mécanique [physics]/Mécanique des fluides [physics.class-ph]
bordeaux.journalPhysical Review E : Statistical, Nonlinear, and Soft Matter Physics
bordeaux.page036315 (1-14)
bordeaux.volume73
bordeaux.issue3
bordeaux.peerReviewedoui
hal.identifierhal-00389845
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00389845v1
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