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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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https://hal-ens-lyon.archives-ouvertes.fr/ensl-00315777
Contributor : Sergio Ciliberto Connect in order to contact the contributor
Submitted on : Sunday, August 31, 2008 - 3:18:14 PM
Last modification on : Thursday, March 11, 2021 - 3:16:01 PM
Long-term archiving on: : Thursday, June 3, 2010 - 7:14:24 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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