IJPAM: Volume 59, No. 1 (2010)


Mario D'AcuntoNSR, Nano Systems Research, 5, via Cecco di Pietro, Pisa, I-56123, ITALY
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
ISSN: 1311-8080
Year: 2010
Volume: 59
Issue: 1