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Time dependence of advection-diffusion coupling for nanoparticle ensembles

hal.structure.identifierGulliver (UMR 7083)
dc.contributor.authorVILQUIN, Alexandre
hal.structure.identifierLaboratoire Ondes et Matière d'Aquitaine [LOMA]
dc.contributor.authorBERTIN, Vincent
hal.structure.identifierGulliver (UMR 7083)
dc.contributor.authorSOULARD, Pierre
hal.structure.identifierLaboratoire de Physique des Solides [LPS]
dc.contributor.authorGUYARD, Gabriel
hal.structure.identifierGulliver (UMR 7083)
dc.contributor.authorRAPHAËL, Elie
hal.structure.identifierLaboratoire de Physique des Solides [LPS]
dc.contributor.authorRESTAGNO, Frederic
hal.structure.identifierLaboratoire Ondes et Matière d'Aquitaine [LOMA]
dc.contributor.authorSALEZ, Thomas
hal.structure.identifierGulliver (UMR 7083)
dc.contributor.authorMCGRAW, Joshua
dc.date.issued2021
dc.identifier.issn2469-990X
dc.description.abstractEnAdvection-diffusion coupling can enhance particle and solute dispersion by orders of magnitude as compared to pure diffusion, with a steady state being reached for confined flow regions such as a nanopore or blood vessel. Here, by using evanescent wave microscopy, we measure for the first time the full dynamics of Taylor dispersion, highlighting the crucial role of the initial concentration profile. We make time-dependent, nanometrically-resolved particle dispersion measurements varying nanoparticle size, velocity gradient, and viscosity in sub-micrometric near-surface flows. Such resolution permits a measure of the full dynamical approach and crossover into the steady state, revealing a family of master curves. Remarkably, our results show that the dynamics depend sensitively on the initial spatial distribution of the nanoparticles. These observations are in quantitative agreement with existing analytical models and numerical simulations performed herein. We anticipate that our study will be a first step toward observing and modelling more complex situations at the nanoscale, such as target finding and chemical reactions in nanoconfined flows, dynamical adsorption and capture problems, as well as nanoscale drug delivery systems.
dc.description.sponsorshipRécupération assistée du pétrole: du contrôle des interfaces à la nanofluidique
dc.description.sponsorshipConfinement des Polymères en Solution : Recherches Optiques Avancées Sous Confinement Extrême - ANR-19-CE06-0021
dc.description.sponsorshipMouvement brownien au voisinage d'interfaces molles - ANR-21-ERCC-0010
dc.language.isoen
dc.publisherAmerican Physical Society
dc.title.enTime dependence of advection-diffusion coupling for nanoparticle ensembles
dc.typeArticle de revue
dc.identifier.doi10.1103/PhysRevFluids.6.064201
dc.subject.halPhysique [physics]/Matière Condensée [cond-mat]/Matière Molle [cond-mat.soft]
dc.subject.halPhysique [physics]/Mécanique [physics]/Mécanique des fluides [physics.class-ph]
dc.identifier.arxiv2007.08261
bordeaux.journalPhysical Review Fluids
bordeaux.page064201
bordeaux.volume6
bordeaux.peerReviewedoui
hal.identifierhal-02896493
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02896493v1
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