Volume 81, Number 5, March 2008
Article Number 50005
Number of page(s) 6
Section General
Published online 19 February 2008
EPL, 81 (2008) 50005
DOI: 10.1209/0295-5075/81/50005

Work and dissipation fluctuations near the stochastic resonance of a colloidal particle

P. Jop, A. Petrosyan and S. Ciliberto

Université de Lyon, Laboratoire de Physique de l'École Normale Supérieure de Lyon, CNRS UMR 5276 46 allée d'Italie, 69364 Lyon cedex 7, France

received 21 November 2007; accepted in final form 17 January 2008; published March 2008
published online 19 February 2008

We study experimentally the fluctuations of the injected and dissipated energy in a system of a colloidal particle trapped in a double-well potential periodically modulated by an external perturbation. The work done by the external force and the dissipated energy are measured close to the stochastic resonance where the injected power is maximum. We show that the steady-state fluctuation theorem holds in this system.

05.40.-a - Fluctuation phenomena, random processes, noise, and Brownian motion.
05.70.Ln - Nonequilibrium and irreversible thermodynamics.
82.70.Dd - Colloids.

© EPLA 2008