Effective Temperature in a Colloidal Glass

Abstract : We study the Brownian motion of particles trapped by optical tweezers inside a colloidal glass (Laponite) during the sol-gel transition. We use two methods based on passive rheology to extract the effective temperature from the fluctuations of the Brownian particles. All of them give a temperature that, within experimental errors, is equal to the heat bath temperature. Several interesting features concerning the statistical properties and the long time correlations of the particles are observed during the transition.
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Submitted on : Sunday, August 31, 2008 - 3:18:14 PM
Last modification on : Thursday, April 19, 2018 - 2:54:03 PM
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Pierre Jop, Artyom Petrosyan, Sergio Ciliberto. Effective Temperature in a Colloidal Glass. Phylosophical Magazine, 2008, 88 (33), pp.4205. ⟨10.1080/14786430802459537⟩. ⟨ensl-00315777⟩

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