Rejuvenation and overaging in a colloidal glass under shear

Virgile Viasnoff; Francois Lequeux

doi:10.1103/physrevlett.89.065701

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arXiv · cond-mat/0203328

Rejuvenation and overaging in a colloidal glass under shear

Virgile Viasnoff·Francois Lequeux

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Abstract

We report the modifications of the microscopic dynamics of a colloidal glass submitted to shear. We use multispeckle diffusing wave spectroscopy to monitor the evolution of the spontaneous slow relaxation processes after the sample have been submitted to various straining. We show that high shear rejuvenates the system and accelerates its dynamics whereas moderate shear overage the system. We analyze this phenomena within the frame of the Bouchaud's trap model.

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Virgile Viasnoff, Francois Lequeux. 2002-03-15. Rejuvenation and overaging in a colloidal glass under shear. https://doi.org/10.1103/physrevlett.89.065701

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