title: Thermophoresis at a charged surface: the role of hydrodynamic slip.
abstract: By matching boundary layer hydrodynamics with slippage to the force-free flow at larger distances, we obtain the thermophoretic mobility of charged particles as a function of the Navier slip length b. A moderate value of b augments Ruckenstein's result by a term 2b/λ, where λ is the Debye length. If b exceeds the particle size a, the enhancement coefficient a/λ is independent of b but proportional to the particle size. Similar effects occur for transport driven by a salinity gradient or by an electric field.
authors.affiliation: CPMOH, Université Bordeaux 1 & CNRS, 351 cours de la Libération, F-33405 Talence, France.
authors.forename: Julien
authors.initials: J
authors.lastname: Morthomas
authors.forename: Alois
authors.initials: A
authors.lastname: Würger