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Título:
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Concentration fluctuations in a polymer solution under a temperature gradient
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Autores:
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Li, W. B. ;
Zhang, K. J. ;
Sengers, Jan V. ;
Gammon, R. W. ;
Ortiz de Zárate Leira, José María
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Tipo de documento:
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texto impreso
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Editorial:
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American Physical Society, 1998-12-21
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Dimensiones:
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application/pdf
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Nota general:
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info:eu-repo/semantics/openAccess
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Idiomas:
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Palabras clave:
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Estado = Publicado
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Materia = Ciencias: Física: Termodinámica
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Tipo = Artículo
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Resumen:
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We have performed small-angle Rayleigh light-scattering measurements in polymer solutions under various externally applied temperature gradients. Our experiments confirm the existence of an enhancement of the concentration fluctuations. The nonequilibrium concentration fluctuations are proportional to (del T)(2)/k(4), where del T is the applied temperature gradient, and k is the wave number of the fluctuations. The measured strengths of the nonequilibrium fluctuations in the dilute and semidilute concentration regime agree with the strengths calculated from fluctuating hydrodynamics.
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En línea:
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https://eprints.ucm.es/id/eprint/27418/1/Ortiz38libre.pdf
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