IJPAM: Volume 59, No. 1 (2010)
Department of Physics
University of Pisa
3, Largo B. Pontecorvo, Pisa, I-56127, ITALY
Centro di Calcolo Numerico ``B. van der Pol''
5, via Cecco di Pietro, Pisa, I-56123, ITALY
Abstract.A possible improvement of the directed motion of an inertial Brownian motor should operate on the identification of the optimal conditions that maximize the motor current and minimize its dispersion. In this paper, we have analyzed the role of a bias on the motion of a rocked ratchet in an asymmetric potential making use of a numerical simulation of the inertial Brownian motor. The existence of a critical range for negative loads correpsondent to optimal efficiency for the transport properties of the Brownian motor has been found. In turn, the connection between the load and the efficiency is discussed.
Received: December 8, 2007
AMS Subject Classification: 60J65
Key Words and Phrases: inertial Brownian motor, asymmetric potential, numerical simulation
Source: International Journal of Pure and Applied Mathematics