Kinetics of growth of non-equilibrium fluctuations during thermodiffusion in a polymer solution

The European Physical Journal. E, Soft Matter
Marina CarpinetiAlberto Vailati

Abstract

A thermal diffusion process occurring in a binary liquid mixture is accompanied by long ranged non-equilibrium concentration fluctuations. The amplitude of these fluctuations at large length scales can be orders of magnitude larger than that of equilibrium ones. So far non-equilibrium fluctuations have been mainly investigated under stationary or quasi-stationary conditions, a situation that allows to achieve a detailed statistical characterization of their static and dynamic properties. In this work we investigate the kinetics of growth of non-equilibrium concentration fluctuations during a transient thermodiffusion process, starting from a configuration where the concentration of the sample is uniform. The use of a large molecular weight polymer solution allows to attain a slow dynamics of growth of the macroscopic concentration profile. We focus on the development of fluctuations at small wave vectors, where their amplitude is strongly limited by the presence of gravity. We show that the growth rate of non-equilibrium fluctuations follows a power law [Formula: see text] as a function of time, without any typical time scale and independently of the wave vector. We formulate a phenomenological model that allows to relate the r...Continue Reading

References

Oct 1, 1989·Physical Review A: General Physics·B M Law, J C Nieuwoudt
Aug 15, 1990·Physical Review. a·J C Nieuwoudt, B M Law
Feb 1, 1993·Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics·P N SegrèJ V Sengers
Jun 1, 1992·Physical Review Letters·M Carpineti, M Giglio
Oct 25, 2000·Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics·D BrogioliM Giglio
Apr 17, 2001·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·D Brogioli, A Vailati
Nov 13, 2007·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Fabrizio CroccoloDavid S Cannell
Apr 21, 2011·Nature Communications·Alberto VailatiMarzio Giglio
Jul 12, 2011·Applied Optics·Fabrizio Croccolo, Doriano Brogioli
Jun 7, 2013·Physical Review Letters·T R KirkpatrickJ V Sengers
Aug 1, 2015·Physical Review Letters·T R KirkpatrickJ V Sengers
Sep 20, 2015·The European Physical Journal. E, Soft Matter·J M Ortiz de ZárateJ V Sengers
Feb 13, 2016·Physical Review. E·T R KirkpatrickJ V Sengers
Apr 15, 2016·Physical Review. E·T R KirkpatrickJ V Sengers
Sep 15, 2016·Physical Review. E·Doriano BrogioliAlberto Vailati
Nov 1, 2016·The European Physical Journal. E, Soft Matter·Fabio GiavazziRoberto Cerbino
Dec 18, 2016·The European Physical Journal. E, Soft Matter·F CroccoloJ V Sengers
Dec 25, 2016·The European Physical Journal. E, Soft Matter·Philipp BaaskeAlberto Vailati
Dec 25, 2016·The European Physical Journal. E, Soft Matter·Fabrizio Croccolo, Henri Bataller
Sep 17, 2017·Langmuir : the ACS Journal of Surfaces and Colloids·Sara BonellaGiovanni Ciccotti

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Citations

Nov 23, 2019·The European Physical Journal. E, Soft Matter·Fernando BresmeFabrizio Croccolo

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