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Fluctuation-dissipation Theorem in an Aging Colloidal Glass by Jabbari-Farouji, Sara; Mizuno, Daisuke; Atakhorrami, Maryam; MacKintosh, Fred C.; Schmidt, Christoph F.; Eiser, Erika; Wegdam, Gerard H.; Bonn, Daniel is a scholarly article available to read on EtoBox.

What is Fluctuation-dissipation Theorem in an Aging Colloidal Glass about?

We provide a direct experimental test of the Stokes-Einstein relation as a special case 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 non-equilibrium 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. This is the clearest change in material properties of the system with aging.

Author

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

Published

2005

Language

EN