Relaxation of a Colloidal Particle into a Nonequilibrium Steady State

Details Relaxation of a Colloidal Particle into a Nonequilibrium Steady State Relaxation of a Colloidal Particle into a Nonequilibrium Steady State

2009-02-16

arxiv.org/abs/0902.2650v2

Phys. Rev. E., 79, 060104(R) (2009)

Physics

Condensed Matter

Soft Condensed Matter

Scientific paper

We study the relaxation of a single colloidal sphere which is periodically driven between two nonequilibrium steady states. Experimentally, this is achieved by driving the particle along a toroidal trap imposed by scanned optical tweezers. We find that the relaxation time after which the probability distributions have been relaxed is identical to that obtained by a steady state measurement. In quantitative agreement with theoretical calculations the relaxation time strongly increases when driving the system further away from thermal equilibrium.

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