Afficher la notice abrégée

hal.structure.identifierLaboratoire Ondes et Matière d'Aquitaine [LOMA]
dc.contributor.authorWÜRGER, Aloïs
dc.date.issued2016
dc.identifier.issn0031-9007
dc.description.abstractEnWe study hydrodynamic slowing-down of a particle moving in a temperature gradient perpendicular to a wall. At distances much smaller than the particle radius, h << a, lubrication approximation leads to the reduced velocity u/u0 = 3 h/a (ln(a/h) − 9/4), where u0 is the velocity in the bulk. With Brenner's result for confined diffusion, we find that the trapping efficiency, or effective Soret coefficient , increases logarithmically as the particle gets very close to the wall. Our results provide a quantitative explanation for the recently observed enhancement of thermophoretic trapping at short distances. Our discussion of parallel and perpendicular thermophoresis in a capillary, reveals a good agreement with experiments on charged polystyrene particles, and sheds some light on a controversy concerning the size-dependence and the non-equilibrium nature of the Soret effect.
dc.language.isoen
dc.publisherAmerican Physical Society
dc.rights.urihttp://creativecommons.org/licenses/by-nd/
dc.title.enHydrodynamic boundary effects on thermophoresis of confined colloids
dc.typeArticle de revue
dc.identifier.doi10.1103/PhysRevLett.116.138302
dc.subject.halPhysique [physics]/Matière Condensée [cond-mat]/Matière Molle [cond-mat.soft]
bordeaux.journalPhysical Review Letters
bordeaux.page138302
bordeaux.volume116
bordeaux.peerReviewedoui
hal.identifierhal-01289232
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01289232v1
bordeaux.COinSctx_ver=Z39.88-2004&amp;rft_val_fmt=info:ofi/fmt:kev:mtx:journal&amp;rft.jtitle=Physical%20Review%20Letters&amp;rft.date=2016&amp;rft.volume=116&amp;rft.spage=138302&amp;rft.epage=138302&amp;rft.eissn=0031-9007&amp;rft.issn=0031-9007&amp;rft.au=W%C3%9CRGER,%20Alo%C3%AFs&amp;rft.genre=article


Fichier(s) constituant ce document

FichiersTailleFormatVue

Il n'y a pas de fichiers associés à ce document.

Ce document figure dans la(les) collection(s) suivante(s)

Afficher la notice abrégée