Does thermophoretic mobility depend on particle size?

Marco Braibanti, Daniele Vigolo, Roberto Piazza

Research output: Contribution to journalArticlepeer-review

175 Citations (Scopus)

Abstract

Thermophoresis is particle drift induced by a temperature gradient. By measuring the full temperature dependence of this effect for polystyrene latex suspensions, we show that the thermophoretic mobility (or "thermal diffusion coefficient") DT is basically independent on particle size, in particular, when the interfacial properties of the colloidal particles are carefully standardized by adsorbing a surfactant layer on the particle surface. Even more, all investigated systems show values of DT which are very close to those measured for simple micellar solutions of the adsorbed surfactant. Our findings could be of relevance for downsizing microfluidics to the nanometric range.

Original languageEnglish
Article number108303
JournalPhysical Review Letters
Volume100
Issue number10
DOIs
Publication statusPublished - 12 Mar 2008

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Fingerprint

Dive into the research topics of 'Does thermophoretic mobility depend on particle size?'. Together they form a unique fingerprint.

Cite this