Connection between thermophoresis and thermodiffusion in a liquid binary mixture

Eric Bringuier (1)

1 MPQ (UMR_7162) - Laboratoire Matériaux et Phénomènes Quantiques

In a liquid suspension, thermophoresis is the motion of a suspended particle under a temperature gradient. In a liquid binary mixture, thermodiffusion is the generation of a composition gradient upon application of a temperature gradient. In this paper, a quantitative connection is established between the two phenomena without making assumptions about their mechanisms. It is shown that Galilean invariance and the choice of a Galilean reference frame play a key role in that connection. Our results are not restricted to very dilute suspensions or mixtures.

Mots clés: Physical Sciences

Eric Bringuier. Connection between thermophoresis and thermodiffusion in a liquid binary mixture. Philosophical Magazine, 2011, pp.1. ⟨10.1080/14786435.2010.543094⟩. ⟨hal-00662728⟩