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Nanoparticle Taylor dispersion near charged surfaces with an open boundary

hal.structure.identifierGulliver (UMR 7083)
hal.structure.identifierLaboratoire Ondes et Matière d'Aquitaine [LOMA]
dc.contributor.authorVILQUIN, Alexandre
hal.structure.identifierLaboratoire Ondes et Matière d'Aquitaine [LOMA]
hal.structure.identifierGulliver (UMR 7083)
hal.structure.identifierUniversity of Twente
dc.contributor.authorBERTIN, Vincent
hal.structure.identifierGulliver (UMR 7083)
dc.contributor.authorRAPHAËL, Elie
hal.structure.identifierLaboratoire Ondes et Matière d'Aquitaine [LOMA]
dc.contributor.authorDEAN, David
hal.structure.identifierLaboratoire Ondes et Matière d'Aquitaine [LOMA]
dc.contributor.authorSALEZ, Thomas
hal.structure.identifierGulliver (UMR 7083)
dc.contributor.authorMCGRAW, Joshua
dc.date.accessioned2022-10-14T09:38:31Z
dc.date.available2022-10-14T09:38:31Z
dc.date.created2022-06-12
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/164967
dc.description.abstractEnThe dispersion of microscopic particles in shear flows is influenced both by advection and thermal motion. At the nanoscale, the interactions between such particles and their confining boundaries, along with their size, cannot be neglected. Here, using evanescent-wave microscopy with sub-micrometric observation zones, we study the transport of charged nanoparticles in linear shear flows, near a charged, planar wall on one side, and an open, particle-consuming boundary on the other side where the particle leaves the observation zone. By varying the concentration of electrolytes, we show how electrostatic interactions between particles and surface affect dispersion. In addition, an absorption-like condition at the open boundary induces an exponential decay of the particle number, which alters the transport efficiency. The combination of these two effects reduces the overall dispersion by an order of magnitude, as captured by our theoretical model. Our findings might have implications in biological contexts as well as in technological devices based on the transport of confined diffusive objects at small scales.
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.description.sponsorshipCapteur Interférométrique de Contraintes de Surface - ANR-21-CE06-0029
dc.description.sponsorshipFrottements dans les systèmes complexes - ANR-21-CE06-0039
dc.language.isoen
dc.rights.urihttp://creativecommons.org/licenses/by/
dc.subject.enTaylor dispersion
dc.subject.enShear flows
dc.subject.enNanoparticle dispersion
dc.subject.enMicrofluidics
dc.title.enNanoparticle Taylor dispersion near charged surfaces with an open boundary
dc.typeDocument de travail - Pré-publication
dc.subject.halPhysique [physics]/Physique [physics]/Dynamique des Fluides [physics.flu-dyn]
dc.subject.halPhysique [physics]/Matière Condensée [cond-mat]/Matière Molle [cond-mat.soft]
dc.subject.halPhysique [physics]/Matière Condensée [cond-mat]/Mécanique statistique [cond-mat.stat-mech]
dc.identifier.arxiv2206.07413
bordeaux.hal.laboratoriesLaboratoire Ondes et Matière d'Aquitaine (LOMA) - UMR 5798*
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionCNRS
hal.identifierhal-03694008
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03694008v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.au=VILQUIN,%20Alexandre&BERTIN,%20Vincent&RAPHA%C3%8BL,%20Elie&DEAN,%20David&SALEZ,%20Thomas&rft.genre=preprint


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