Effective temperatures from the fluctuation-dissipation measurements in soft glassy materials

S. Jabbari-Farouji; D. Mizuno; D. Derks; G. H. Wegdam; F.C. Mac Kintosh; C. Schmidt; D. Bonn

doi:10.1209/0295-5075/84/20006

Effective temperatures from the fluctuation-dissipation measurements in soft glassy materials

S. Jabbari-Farouji, D. Mizuno, D. Derks, G. H. Wegdam, F.C. Mac Kintosh, C. Schmidt, D. Bonn

Physics of Living Systems

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Abstract

We have investigated the validity of the fluctuation-dissipation theorem (FDT) and the applicability of the concept of effective temperature in a number of non-equilibrium soft glassy materials. Using a combination of passive and active microrheology to measure displacement fluctuations and the mechanical response function of probe particles embedded in the materials, we have directly tested the validity of the FDT. Our results show no violation of the FDT over several decades in frequency (1-10

Original language	English
Article number	20006
Number of pages	7
Journal	Europhysics Letters
Volume	84
Issue number	2
DOIs	https://doi.org/10.1209/0295-5075/84/20006
Publication status	Published - 8 Oct 2008

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Effective temperatures from the fluctuation-dissipation measurements in soft glassy materials

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10.1209/0295-5075/84/20006

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AU - Derks, D.

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AU - Mac Kintosh, F.C.

AU - Schmidt, C.

AU - Bonn, D.

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AB - We have investigated the validity of the fluctuation-dissipation theorem (FDT) and the applicability of the concept of effective temperature in a number of non-equilibrium soft glassy materials. Using a combination of passive and active microrheology to measure displacement fluctuations and the mechanical response function of probe particles embedded in the materials, we have directly tested the validity of the FDT. Our results show no violation of the FDT over several decades in frequency (1-10

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Effective temperatures from the fluctuation-dissipation measurements in soft glassy materials

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