RT Journal Article
T1 Nonequilibrium Casimir-like Forces in Liquid Mixtures
A1 Kirkpatrick, T. R.
A1 Ortiz De Zárate Leira, José María
A1 Sengers, J. V.
AB In this Letter, we consider a liquid mixture confined between two thermally conducting walls subjected to a stationary temperature gradient. While in a one-component liquid nonequilibrium fluctuation forces appear inside the liquid layer, nonequilibrium fluctuations in a mixture induce a Casimir-like force on the walls. The physical reason is that the temperature gradient induces large concentration fluctuations through the Soret effect. Unlike temperature fluctuations, nonequilibrium concentration fluctuations are also present near a perfectly thermally conducting wall. The magnitude of the fluctuation-induced Casimir force is proportional to the square of the Soret coefficient and is related to the concentration dependence of the heat and volume of mixing.
PB American Physical Society
SN 0031-9007
YR 2015
FD 2015-07-14
LK https://hdl.handle.net/20.500.14352/24132
UL https://hdl.handle.net/20.500.14352/24132
LA eng
NO © 2015 American Physical Society. The authors acknowledge valuable discussions with Jeremy N. Munday. The research at the University of Maryland was supported by the U.S. National Science Foundation under Grant No. DMR-1401449.
NO National Science Foundation (NSF), EE.UU.
DS Docta Complutense
RD 30 dic 2025