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.

to be published in Philosophical Magazine

References in corpus (1)

• Measurement of Effective Temperatures in an Aging Colloidal Glass

Cited by in corpus (4)

• Active dumbbells: dynamics and morphology in the coexisting region
• Generalized fluctuation-dissipation relation and effective temperature in off-equilibrium colloids
• Experimental study of out of equilibrium fluctuations in a colloidal suspension of Laponite using optical traps
• Aging and effective temperatures near a critical point