Ratchet transport of self-propelled chimeras in an asymmetric periodic structure  

作　　者：Wei-Jing Zhu Bao-Quan Ai 朱薇静;艾保全(School of Photoelectric Engineering,Guangdong Polytechnic Normal University,Guangzhou 510665,China;Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials,School of Physics and Telecommunication Engineering,South China Normal University,Guangzhou 510006,China)

机构地区：[1]School of Photoelectric Engineering,Guangdong Polytechnic Normal University,Guangzhou 510665,China [2]Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials,School of Physics and Telecommunication Engineering,South China Normal University,Guangzhou 510006,China

出　　处：《Chinese Physics B》2022年第4期201-207,共7页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grant No.12075090);the Key-Area Research and Development Program of Guangdong Province,China(Grant No.2019B030330001);the Science and Technology Program of Guangzhou City(Grant No.2019050001);the Natural Science Foundation of Guangdong Province,China(Grant No.2017A030313029);the Major Basic Research Project of Guangdong Province,China(Grant No.2017KZDXM024)。

摘　　要：We studied the rectified transport of underdamped particles subject to phase lag in an asymmetric periodic structure.When the inertia effect is considered,it is possible to observe reversals of the average velocity with small self-propelled force,whereas particles always move in the positive direction with large self-propelled force.The introduction of phase lag leads particles to follow circular orbits and suppress the polar motion.In addition,this can adjust the direction of particle motion.There exists an optimal value of polar interaction strength at which the rectification is maximal.These results open the way for many application processes,such as spatial sorting of particles mixture and separation based on their physical properties.

关 键 词：Brownian motion self-propelled particles stochastic processes 

分 类 号：O552.1[理学—热学与物质分子运动论]