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Electroviscous drag on squeezing motion in sphere-plane geometry

hal.structure.identifierLaboratoire Ondes et Matière d'Aquitaine [LOMA]
dc.contributor.authorRODRÍGUEZ MATUS, Marcela
hal.structure.identifierLaboratoire Ondes et Matière d'Aquitaine [LOMA]
dc.contributor.authorZHANG, Zaicheng
hal.structure.identifierLaboratoire Ondes et Matière d'Aquitaine [LOMA]
dc.contributor.authorBENRAHLA, Zouhir
hal.structure.identifierMax Planck Institute for Intelligent Systems, Stuttgart, Germany
dc.contributor.authorMAJEE, Arghya
hal.structure.identifierLaboratoire Ondes et Matière d'Aquitaine [LOMA]
dc.contributor.authorMAALI, Abdelhamid
hal.structure.identifierLaboratoire Ondes et Matière d'Aquitaine [LOMA]
dc.contributor.authorWÜRGER, Alois
dc.date.issued2022
dc.identifier.issn2470-0045
dc.description.abstractEnTheoretically and experimentally, we study electroviscous phenomena resulting from charge-flow coupling in a nanoscale capillary. Our theoretical approach relies on Poisson-Boltzmann mean-field theory and on coupled linear relations for charge and hydrodynamic flows, including electro-osmosis and charge advection. With respect to the unperturbed Poiseuille flow, we define an electroviscous coupling parameter ξ , which turns out to be maximum where the film height h 0 is comparable to the Debye screening length λ. We also present dynamic atomic force microscopy data for the viscoelastic response of a confined water film in sphere-plane geometry; our theory provides a quantitative description for the electroviscous drag coefficient and the electrostatic repulsion as a function of the film height, with the surface charge density as the only free parameter. Charge regulation sets in at even smaller distances.
dc.description.sponsorshipElectrodynamical diffuse layers - ANR-19-CE30-0012
dc.language.isoen
dc.publisherAmerican Physical Society (APS)
dc.title.enElectroviscous drag on squeezing motion in sphere-plane geometry
dc.typeArticle de revue
dc.identifier.doi10.1103/PhysRevE.105.064606
dc.subject.halPhysique [physics]/Mécanique [physics]/Mécanique des fluides [physics.class-ph]
bordeaux.journalPhysical Review E
bordeaux.page064606
bordeaux.volume105
bordeaux.issue6
bordeaux.peerReviewedoui
hal.identifierhal-03697317
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03697317v1
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