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Controlling the diffusion of bistable active clusters in one-dimensional channels

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  • Wei-rong Zhong

    (Jinan University)

  • Bao-quan Ai

    (South China Normal University)

Abstract

A two-cluster system with a bistable potential is constructed in one-dimensional channels. Using molecular dynamics and Monte Carlo methods, we study the collective diffusion properties of the bistable cluster system. It is shown that the internal structure of the bistable cluster can greatly influence the diffusion behavior, which is different from simple particle systems. The collective diffusion coefficients of two states can differ by two orders of magnitude. An explanation is found from the distance distribution between two clusters. This study provides theoretical guidance for understanding the particularity of complex active structures in diffusion behavior. If the results are extended to active matter, it can be understood that the active matter can regulate the diffusion ability by changing its own morphology or stability. Graphical abstract In this manuscript, we have investigated the effects of complex structures on collective diffusion behavior in one dimensional channels as the followings: (1) The collective diffusion coefficient of bistable cluster depends strongly on the internal structure of the cluster. If this is true, it means that the previous simplification of a multi-particle system should be readdressed to new discussions. (2) The influence of cluster bistability on the collective diffusion coefficient varies by two orders of magnitude, just like a switch “on and off”. Assuming that the cluster is an active matter that can adjust its form, then controlling the transport of active matter will be possible.

Suggested Citation

  • Wei-rong Zhong & Bao-quan Ai, 2022. "Controlling the diffusion of bistable active clusters in one-dimensional channels," The European Physical Journal B: Condensed Matter and Complex Systems, Springer;EDP Sciences, vol. 95(3), pages 1-6, March.
    • Handle: RePEc:spr:eurphb:v:95:y:2022:i:3:d:10.1140_epjb_s10051-021-00248-y
    DOI: 10.1140/epjb/s10051-021-00248-y
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    References listed on IDEAS

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    1. Zhang, Kun & Wang, Jin, 2017. "Landscape and flux theory of non-equilibrium open economy," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 482(C), pages 189-208.
    2. Tokuyama, Michio & Furubayashi, Takaaki & Kawamura, Junichi, 2017. "Statistical–mechanical theory of self-diffusion in dilute suspensions of macroions," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 486(C), pages 681-700.
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