Comment on ''Measurement of Effective Temperatures in an Aging Colloidal Glass''
Pierre Jop (Phys-ENS), Artyom Petrosyan (Phys-ENS), Sergio Ciliberto, (Phys-ENS)
TL;DR
This paper reports measurements of particle fluctuations in an aging colloidal glass, finding that the effective temperature remains equal to the bath temperature during aging.
Contribution
It provides experimental evidence that the effective temperature in an aging colloidal glass equals the bath temperature, challenging some prior assumptions.
Findings
Effective temperature equals bath temperature during aging
Fluctuation measurements support equilibrium-like behavior
No deviation in effective temperature observed
Abstract
We measure the fluctuations of the position of a silica bead trapped by an optical tweezers during the aging of a Laponite suspension. We find that the effective temperature is equal to the bath temperature.
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Taxonomy
TopicsMaterial Dynamics and Properties · Geochemistry and Geologic Mapping · Adsorption, diffusion, and thermodynamic properties of materials