Fluctuation-dissipation theorem in an aging colloidal glass

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

Research output: Contribution to journalArticlepeer-review

65 Citations (Scopus)

Abstract

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.

Original languageEnglish
Article number108302
JournalPhysical review letters
Volume98
Issue number10
DOIs
Publication statusPublished - Mar 9 2007
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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