TY - GEN
T1 - Particle Transport in a Confined Ratchet Driven by the Colored Noise
AU - Xu, Yong
AU - Mei, Ruoxing
AU - Li, Yongge
AU - Kurths, Jürgen
N1 - Publisher Copyright:
© Springer Nature Switzerland AG 2019.
PY - 2019
Y1 - 2019
N2 - In this paper, we study particle transport in a confined ratchet which is constructed by combining a periodic channel with a ratchet potential under colored Gaussian noise excitation. Due to the interaction of colored noise and confined ratchet, particles host remarkably different properties in the transporting process. By means of the second-order stochastic Runge-Kutta algorithm, effects of the system parameters, including the noise intensity, colored noise correlation time and ratchet potential parameters are investigated by calculating particle current. The results reveal that the colored noise correlation time can lead to an increase of particle current. The increase of noise intensity along the horizontal or vertical direction can accelerate the particle transport in the corresponding direction but slow down the particle transport when there are the same noise intensities in both directions. For potential parameters, an increase of the slope parameter results into an increase of particle currents. The interactions of potential parameters and correlation time can induce complex particle transport phenomena, i.e. particle current increases with the increase of the potential depth parameter for a smaller asymmetric parameter and non-zero correlation time, while the tendency changes for a larger asymmetric parameter. Accordingly, suitable system parameters can be chosen to accelerate the particle transport and used to design new devices for particle transport in microscale.
AB - In this paper, we study particle transport in a confined ratchet which is constructed by combining a periodic channel with a ratchet potential under colored Gaussian noise excitation. Due to the interaction of colored noise and confined ratchet, particles host remarkably different properties in the transporting process. By means of the second-order stochastic Runge-Kutta algorithm, effects of the system parameters, including the noise intensity, colored noise correlation time and ratchet potential parameters are investigated by calculating particle current. The results reveal that the colored noise correlation time can lead to an increase of particle current. The increase of noise intensity along the horizontal or vertical direction can accelerate the particle transport in the corresponding direction but slow down the particle transport when there are the same noise intensities in both directions. For potential parameters, an increase of the slope parameter results into an increase of particle currents. The interactions of potential parameters and correlation time can induce complex particle transport phenomena, i.e. particle current increases with the increase of the potential depth parameter for a smaller asymmetric parameter and non-zero correlation time, while the tendency changes for a larger asymmetric parameter. Accordingly, suitable system parameters can be chosen to accelerate the particle transport and used to design new devices for particle transport in microscale.
KW - Colored noise
KW - Confined ratchet
KW - Particle current
KW - Particle transport
UR - http://www.scopus.com/inward/record.url?scp=85069438786&partnerID=8YFLogxK
U2 - 10.1007/978-3-030-15096-9_15
DO - 10.1007/978-3-030-15096-9_15
M3 - 会议稿件
AN - SCOPUS:85069438786
SN - 9783030150952
T3 - Springer Proceedings in Mathematics and Statistics
SP - 443
EP - 456
BT - Stochastic Dynamics Out of Equilibrium - Institut Henri Poincaré, 2017
A2 - Giacomin, Giambattista
A2 - Olla, Stefano
A2 - Saada, Ellen
A2 - Spohn, Herbert
A2 - Stoltz, Gabriel
A2 - Stoltz, Gabriel
PB - Springer New York LLC
T2 - International workshop on Stochastic Dynamics out of Equilibrium, IHPStochDyn 2017
Y2 - 12 June 2017 through 16 June 2017
ER -