Directed motion of two-headed Brownian motors

摘要

Two-headed Brownian motors based on potential fluctuations are studied. Directed motion of the Brownian motor is induced by the shift transitions of the ratchet-like periodic potential. The Brownian motors with different lengths of necks can move in opposite directions. The efficiency of the Brownian motors to do work against external force is higher than the flashing thermal ratchet. [References: 16]