A flashing correlation ratchet model is proposed, in which the transport of
Brownian particles driven by additive colored noise of Ornstein-Uhlenbeck
type in a flashing ratchet is studied by Monte Carlo simulation. The statio
nary current vs the noise strength and the correlation time is obtained and
analyzed. For a fixed rate of potential flashing, the novel phenomena of c
urrent reversal and reentry occur. The conditions for the occurrence of the
se phenomena are found. The influence of the flipping rate is also discusse
d. This finding might be relevant to the fact that the protein motors with
similar structure can move in opposite directions on the same kind of micro
tubule.