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Title: Thermomolecular Orientation of Nonpolar Fluids
Author: Römer, Frank
Bresme, Fernando
Muscatello, Jordan
Bedeaux, Dick
Rubí Capaceti, José Miguel
Keywords: Dinàmica de fluids
Dinàmica molecular
Fluid dynamics
Molecular dynamics
Issue Date: 7-Mar-2012
Publisher: American Physical Society
Abstract: We investigate the response of molecular fluids to temperature gradients. Using nonequilibrium molecular dynamics computer simulations we show that nonpolar diatomic fluids adopt a preferred orientation as a response to a temperature gradient. We find that the magnitude of this thermomolecular orientation effect is proportional to the strength of the temperature gradient and the degree of molecular anisotropy, as defined by the different size or mass of the molecular atomic sites. We show that the preferred orientation of the molecules follows the same trends observed in the Soret effect of binary mixtures. We argue this is a general effect that should be observed in a wide range of length scales.
Note: Reproducció del document publicat a:
It is part of: Physical Review Letters, 2012, vol. 108, num. 10, p. 105901
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ISSN: 0031-9007
Appears in Collections:Articles publicats en revistes (Física de la Matèria Condensada)

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