Ratchet transport of particles in the obstacle lattices with topographical gradients

Wei-jing Zhu, Jian-chun Wu and Bao-quan Ai

Chaos, Solitons & Fractals, 2022, vol. 162, issue C

Abstract: We study the transport of two types of particles (active particles and active particles with polar interaction) moving in the obstacle lattices with topographical gradients in the x-direction. The direction of particle motion is determined by the topographical gradient and the transport behaviors are different for different types of particles. For active particles, there exists an optimal rotational diffusion coefficient (or the obstacle number) at which the average velocity of particles takes its maximum value. The average velocity increases with the self-propulsion speed. For active particles with polar interaction, particles can change their direction by changing the system parameters (the polar interaction strength, the rotational diffusion coefficient, and the self-propulsion speed).

Keywords: Active particles; Brownian motion; Topotaxis (search for similar items in EconPapers)
Date: 2022
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Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:chsofr:v:162:y:2022:i:c:s096007792200621x

DOI: 10.1016/j.chaos.2022.112411

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