18 October 2004 Stochastic resonance in coupled systems
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We present experimental results on two colloidal systems showing features of stochastic resonance. The first one is a generic and the most simple case of a single overdamped colloidal particle in a double-well potential created by laser tweezers. For appropriate modulation of the potential stochastic resonance is unambiguously demonstrated. The second system is composed of many coupled particles controlled by laser tweezers constituting a ratchet cellular automaton. The ratchet was used as a transmission line for defects and was operated in a non-deterministic mode. Our results demonstrate that the transmission is optimal at a well defined noise level which is one of the characteristics of stochastic resonance.
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Dusan Babic, Dusan Babic, Carmen Schmitt, Carmen Schmitt, Clemens Bechinger, Clemens Bechinger, } "Stochastic resonance in coupled systems", Proc. SPIE 5514, Optical Trapping and Optical Micromanipulation, (18 October 2004); doi: 10.1117/12.555985; https://doi.org/10.1117/12.555985

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