中国物理B ›› 2017, Vol. 26 ›› Issue (8): 80702-080702.doi: 10.1088/1674-1056/26/8/080702

• GENERAL • 上一篇    下一篇

Effective transport of passive particles induced by chiral-active particles in microchannel

Yunfeng Hua(华昀峰), Linli He(何林李), Linxi Zhang(章林溪)   

  1. 1 Department of Physics, Zhejiang University, Hangzhou 310027, China;
    2 Department of Physics, Wenzhou University, Wenzhou 325027, China
  • 收稿日期:2017-03-27 修回日期:2017-05-02 出版日期:2017-08-05 发布日期:2017-08-05
  • 通讯作者: Linxi Zhang E-mail:lxzhang@zju.edu.cn
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 21374102, 21674096, and 21674082).

Effective transport of passive particles induced by chiral-active particles in microchannel

Yunfeng Hua(华昀峰)1, Linli He(何林李)2, Linxi Zhang(章林溪)1   

  1. 1 Department of Physics, Zhejiang University, Hangzhou 310027, China;
    2 Department of Physics, Wenzhou University, Wenzhou 325027, China
  • Received:2017-03-27 Revised:2017-05-02 Online:2017-08-05 Published:2017-08-05
  • Contact: Linxi Zhang E-mail:lxzhang@zju.edu.cn
  • About author:0.1088/1674-1056/26/8/
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 21374102, 21674096, and 21674082).

摘要:

Transport of passive particles induced by chiral-active particles in microchannel is investigated by using the overdamped Langevin dynamics simulation in a two-dimensional model system. Due to the chirality of active particles and special structure of microchannel, effective ratchet transport of passive particles is achieved. Effective transport of passive particles depends on the width of microchannel (d), the density (ρ), and the angular velocity (ω) of chiral-active particles. There exist optimal parameters for d and ω at which the transport efficiency for passive particles takes its maximal value. This investigation can help us understand the necessity of active motion for living systems to maintain a number of vital processes such as materials transport inside cells and the foraging dynamics of mobile organisms.

关键词: transport, active particle, passive particle, overdamped Langevin dynamics simulation, microchannel

Abstract:

Transport of passive particles induced by chiral-active particles in microchannel is investigated by using the overdamped Langevin dynamics simulation in a two-dimensional model system. Due to the chirality of active particles and special structure of microchannel, effective ratchet transport of passive particles is achieved. Effective transport of passive particles depends on the width of microchannel (d), the density (ρ), and the angular velocity (ω) of chiral-active particles. There exist optimal parameters for d and ω at which the transport efficiency for passive particles takes its maximal value. This investigation can help us understand the necessity of active motion for living systems to maintain a number of vital processes such as materials transport inside cells and the foraging dynamics of mobile organisms.

Key words: transport, active particle, passive particle, overdamped Langevin dynamics simulation, microchannel

中图分类号:  (Computer modeling and simulation)

  • 07.05.Tp
77.84.Jd (Polymers; organic compounds) 78.40.Pg (Disordered solids) 78.67.Qa (Nanorods)