中国物理B ›› 2022, Vol. 31 ›› Issue (4): 40204-040204.doi: 10.1088/1674-1056/ac29b1

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Self-adaptive behavior of nunchakus-like tracer induced by active Brownian particles

Yi-Qi Xia(夏益祺)1,2,†, Guo-Qiang Feng(冯国强)2, and Zhuang-Lin Shen(谌庄琳)2,3,‡   

  1. 1 Department of Physics and Electronic Engineering, Yancheng Teachers University, Yancheng 224007, China;
    2 Center for Soft Condensed Matter Physics&Interdisciplinary Research, School of Physical Science and Technology, Soochow University, Suzhou 215006, China;
    3 Department of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, China
  • 收稿日期:2021-07-22 修回日期:2021-09-05 接受日期:2021-09-24 出版日期:2022-03-16 发布日期:2022-03-16
  • 通讯作者: Yi-Qi Xia, Zhuang-Lin Shen E-mail:xiayq@yctu.edu.cn;shenzl@szu.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11804085 and 21674078), the Natural Science Foundation of the Jiangsu Provincial Higher Education Institutions, China (Grant No. 21KJB140023), and the Foundation of Jiangsu Provincial Innovation and Entrepreneurship Doctor, China (Grant No. JSSCBS20211147).

Self-adaptive behavior of nunchakus-like tracer induced by active Brownian particles

Yi-Qi Xia(夏益祺)1,2,†, Guo-Qiang Feng(冯国强)2, and Zhuang-Lin Shen(谌庄琳)2,3,‡   

  1. 1 Department of Physics and Electronic Engineering, Yancheng Teachers University, Yancheng 224007, China;
    2 Center for Soft Condensed Matter Physics&Interdisciplinary Research, School of Physical Science and Technology, Soochow University, Suzhou 215006, China;
    3 Department of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, China
  • Received:2021-07-22 Revised:2021-09-05 Accepted:2021-09-24 Online:2022-03-16 Published:2022-03-16
  • Contact: Yi-Qi Xia, Zhuang-Lin Shen E-mail:xiayq@yctu.edu.cn;shenzl@szu.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11804085 and 21674078), the Natural Science Foundation of the Jiangsu Provincial Higher Education Institutions, China (Grant No. 21KJB140023), and the Foundation of Jiangsu Provincial Innovation and Entrepreneurship Doctor, China (Grant No. JSSCBS20211147).

摘要: We design a nunchakus-like tracer and investigate its self-adaptive behavior in an active Brownian particle (ABP) bath via systematically tuning the self-propelled capability and density of ABPs. Specifically, the nunchakus-like tracer will have a stable wedge-like shape in the ABP bath when the self-propelled force is high enough. We analyze the angle between the two arms of the tracer and the velocity of the joint point of the tracer. The angle exhibits a non-monotonic phenomenon as a function of active force. However, it increases with density of ABPs increasing monotonically. A simple linear relationship between the velocity and the self-propelled force is found under the highly active force. In other words, the joint points of the tracer diffuse and the super-diffusive behavior can make the relation between the self-propelled force and the density of ABPs persist longer. In addition, we find that the tracer can flip at high density of ABPs. Our results also suggest the new self-adaptive model research of the transport properties in a non-equilibrium medium.

关键词: tracer, self-adaptive, super-diffusion, active Brownian particles

Abstract: We design a nunchakus-like tracer and investigate its self-adaptive behavior in an active Brownian particle (ABP) bath via systematically tuning the self-propelled capability and density of ABPs. Specifically, the nunchakus-like tracer will have a stable wedge-like shape in the ABP bath when the self-propelled force is high enough. We analyze the angle between the two arms of the tracer and the velocity of the joint point of the tracer. The angle exhibits a non-monotonic phenomenon as a function of active force. However, it increases with density of ABPs increasing monotonically. A simple linear relationship between the velocity and the self-propelled force is found under the highly active force. In other words, the joint points of the tracer diffuse and the super-diffusive behavior can make the relation between the self-propelled force and the density of ABPs persist longer. In addition, we find that the tracer can flip at high density of ABPs. Our results also suggest the new self-adaptive model research of the transport properties in a non-equilibrium medium.

Key words: tracer, self-adaptive, super-diffusion, active Brownian particles

中图分类号:  (Molecular dynamics and particle methods)

  • 02.70.Ns
64.70.qj (Dynamics and criticality)