Fluctuation-dissipation theorem in an aging colloidal glass.

Jabbari-Farouji, Sara; Mizuno, Daisuke; Atakhorrami, Maryam; MacKintosh, Fred C; Schmidt, Christoph F; Eiser, Erika; Wegdam, Gerard H; Bonn, Daniel

Jabbari-Farouji, Sara; Mizuno, Daisuke; Atakhorrami, Maryam; MacKintosh, Fred C; Schmidt, Christoph F; Eiser, Erika; Wegdam, Gerard H; Bonn, Daniel.

Afiliación

Jabbari-Farouji S; Van der Waals-Zeeman Institute, University of Amsterdam, 1018XE Amsterdam, the Netherlands.

Phys Rev Lett ; 98(10): 108302, 2007 Mar 09.

Article en En | MEDLINE | ID: mdl-17358575

RESUMEN

We provide a direct experimental test of the fluctuation-dissipation theorem (FDT) in an aging colloidal glass. The use of combined active and passive microrheology allows us to independently measure both the correlation and response functions in this nonequilibrium situation. Contrary to previous reports, we find no deviations from the FDT over several decades in frequency (1 Hz-10 kHz) and for all aging times. In addition, we find two distinct viscoelastic contributions in the aging glass, including a nearly elastic response at low frequencies that grows during aging.

Asunto(s)

Algoritmos; Coloides/química; Reología/estadística & datos numéricos; Elasticidad; Suspensiones; Factores de Tiempo; Viscosidad; Agua

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Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Reología / Algoritmos / Coloides Idioma: En Revista: Phys Rev Lett Año: 2007 Tipo del documento: Article País de afiliación: Países Bajos Pais de publicación: Estados Unidos

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