%0 Journal Article
%A Kirkpatrick, T. R.
%A Ortiz de Zárate Leira, José María
%A Sengers, J. V.
%T Giant Casimir effect in fluids in nonequilibrium steady states
%D 2013
%@ 0031-9007
%U https://hdl.handle.net/20.500.14352/33691
%X In this Letter, we consider the fluctuation-induced force exerted between two plates separated by a distance L in a fluid with a temperature gradient. We predict that for a range of distances L, this nonequilibrium force is anomalously large compared to other Casimir forces. The physical reason is that correlations in a nonequilibrium fluid are generally of longer range than other correlations, even than those near an equilibrium critical point. This giant Casimir force is related to a divergent Burnett coefficient that characterizes an Onsager cross effect between the pressure and the temperature gradient. The predicted Casimir force should be detectable with currently available experimental techniques.
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