Brownian pump powered by a white-noise flashing ratchet.
A Brownian pump of particles powered by a stochastic flashing ratchet mechanism is studied. The pumping device is embedded in a finite region and bounded by particle reservoirs. In the steady state, we exactly calculate the spatial density profile, the concentration ratio between both reservoirs and the particle flux. We propose a simulation framework for the consistent evaluation of such observable quantities.
Gomez-Marin
A
A
Facultat de Fisica, Universitat de Barcelona, Diagonal 647, 08028 Barcelona, Spain.
Sancho
J M
JM