Equilibrium and non-equilibrium concentration fluctuations in a critical binary mixture
نویسندگان
چکیده
منابع مشابه
Slowing-down of non-equilibrium concentration fluctuations in confinement
Cédric Giraudet, Henri Bataller, Yifei Sun, Aleksandar Donev, José Maŕıa Ortiz de Zárate and Fabrizio Croccolo Laboratoire des Fluides Complexes et leurs Réservoirs, Université de Pau et des Pays de l’Adour, 64600 Anglet, France Courant Institute of Mathematical Sciences, New York University, New York, NY 10012, USA and Departamento de F́ısica Aplicada I, Universidad Complutense, 28040 Madrid, S...
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Exploiting the mapping between a binary mixture and the Ising model we have analyzed the critical fluctuations by means of the density-matrix renormalization group technique. The calculations have been carried out for a two-dimensional Ising strip subject to equally strong surface fields. It was found that the critical Casimir force has significantly different behavior on opposite sides of the ...
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A semi-grand-canonical Monte Carlo algorithm is employed in conjunction with the bond fluctuation model to investigate the critical properties of an asymmetric binary (AB) polymer mixture. By applying the equal peak-weight criterion to the concentration distribution, the coexistence curve separating the A-rich and B-rich phases is identified as a function of temperature and chemical potential. ...
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Thermal fluctuations in fluids and fluid mixtures in stationary nonequilibrium states are spatially long ranged. This long-ranged nature of the non-equilibrium fluctuations is caused by a coupling between hydrodynamic modes through the non-equilibrium fluxes or gradients. The phenomena are discussed with some illustrative examples in fluids and fluid mixtures.
متن کاملStructure and dynamics of concentration fluctuations in a non-equilibrium dense colloidal suspension.
Linearised fluctuating hydrodynamics describes effectively the concentration non-equilibrium fluctuations (NEF) arising during a diffusion process driven by a small concentration gradient. However, fluctuations in the presence of large gradients are not yet fully understood. Here we study the giant concentration NEF arising when a dense aqueous colloidal suspension is allowed to diffuse into an...
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ژورنال
عنوان ژورنال: The European Physical Journal E
سال: 2016
ISSN: 1292-8941,1292-895X
DOI: 10.1140/epje/i2016-16103-9