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Viscoelastic properties of confined molecular layers

hal.structure.identifierLaboratoire Ondes et Matière d'Aquitaine [LOMA]
dc.contributor.authorWÜRGER, Alois
dc.date.issued2011-11-09
dc.identifier.issn0953-8984
dc.description.abstractEnWe study the viscoelastic properties of a film of n layers of spherical molecules confined between two walls. We find that the dynamic response arises from two competing contributions: the effective stiffness of n C 1 springs in series and softening due to strain fluctuations. In particular, the latter are the origin of the oscillatory behavior of the stiffness and the damping coefficient. The dissipation is strongest at the minima of the stiffness; the inverse behavior may occur for a modulated relaxation time. As a corollary we show that confined molecular layers cannot be described as Maxwell fluids.
dc.language.isoen
dc.publisherIOP Publishing
dc.title.enViscoelastic properties of confined molecular layers
dc.typeArticle de revue
dc.identifier.doi10.1088/0953-8984/23/50/505103
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]
bordeaux.journalJournal of Physics: Condensed Matter
bordeaux.page505103
bordeaux.volume23
bordeaux.issue50
bordeaux.peerReviewedoui
hal.identifierhal-00641816
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00641816v1
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