Research of Particle Transport with External Driving Force and Entropy Barrier
S.X. Lia,b, Z.P. Zhangb and D.L. Chen a
aSchool of Physics and Electronic Science, Guizhou Education University, Guiyang 550018, China
bCollege of Big Data and Information Engineering, Guizhou University, Guiyang 550025, China
Received: January 21, 2016; Revised version: March 27, 2016; In final form: April 6, 2016
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Transport of Brownian particle moving along a three-dimensional throat-like channel is investigated in the presence of an external constant force. The solution of the Fick-Jacobs equation in the situation is solved, and the probability current density and particle current describing the motion of particle are obtained. It is found that entropy barrier and external force can reverse the direction of particle current. The motion of Brownian particle can be tuned by the entropy barrier and the external force.

DOI: 10.12693/APhysPolA.129.1105
PACS numbers: 05.40.Jc, 05.40.-a, 05.10.Gg, 05.60.Cd