TY - JOUR
T1 - Fluctuation-dissipation theorem in an aging colloidal glass
AU - Jabbari-Farouji, Sara
AU - Mizuno, Daisuke
AU - Atakhorrami, Maryam
AU - MacKintosh, Fred C.
AU - Schmidt, Christoph F.
AU - Eiser, Erika
AU - Wegdam, Gerard H.
AU - Bonn, Daniel
PY - 2007/3/9
Y1 - 2007/3/9
N2 - 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.
AB - 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.
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U2 - 10.1103/PhysRevLett.98.108302
DO - 10.1103/PhysRevLett.98.108302
M3 - Article
C2 - 17358575
AN - SCOPUS:33947162985
SN - 0031-9007
VL - 98
JO - Physical Review Letters
JF - Physical Review Letters
IS - 10
M1 - 108302
ER -