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Rectification of chiral attractive active particles under inertial effects in transversal temperature difference

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  • Liao, Jing-jing
  • Liao, Bao-cun

Abstract

We numerically study the rectified transport of chiral active particles in a two-dimensional channel with a transverse temperature gradient, focusing on the interplay between particle inertia and attractive interparticle interactions. Our results demonstrate that particle chirality determines the transport direction, while the rectification efficiency depends non-monotonically on the friction coefficient, exhibiting a pronounced peak at intermediate damping. This optimal rectification arises from a dynamic balance between particle inertia and attraction, which facilitates the formation of mobile clusters. In contrast, directed transport is suppressed in both the inertia-dominated underdamped regime and the attraction-dominated overdamped regime. The influence of angular velocity, self-propulsion speed, temperature difference, the lower wall temperature and packing fraction is systematically analyzed, revealing parameter regimes that maximize transport efficiency.

Suggested Citation

  • Liao, Jing-jing & Liao, Bao-cun, 2026. "Rectification of chiral attractive active particles under inertial effects in transversal temperature difference," Chaos, Solitons & Fractals, Elsevier, vol. 203(C).
    • Handle: RePEc:eee:chsofr:v:203:y:2026:i:c:s0960077925016777
    DOI: 10.1016/j.chaos.2025.117664
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