Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2006-05-12
Physics
Condensed Matter
Statistical Mechanics
7 pages, 6 figures
Scientific paper
10.1103/PhysRevE.74.031121
The one dimensional motion of a massless Brownian particle on a symmetric periodic substrate can be rectified by re-injecting its driving noise through a realistic recycling procedure. If the recycled noise is multiplicatively coupled to the substrate, the ensuing feed-back system works like a passive Maxwell's daemon, capable of inducing a net current that depends on both the delay and the autocorrelation times of the noise signals. Extensive numerical simulations show that the underlying rectification mechanism is a resonant nonlinear effect: The observed currents can be optimized for an appropriate choice of the recycling parameters with immediate application to the design of nanodevices for particle transport.
Borromeo M.
Giusepponi S.
Marchesoni Fabio
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