The condition of optimal efficiency in the energy transformation of a massive Brownian particle, moving in an asymmetric potential and subject to an external driving force, is studied by direct simulation of the stochastic differential equations. We analyze the behavior of the stationary...

The average current and efficiency of an overdamped Brownian particle, moving in an asymmetric potential and subject to an external driving force is studied by Langevin equation simulations. We found that there is a regime where the efficiency can be optimized at finite temperatures,...