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arXiv 2212.14701cond-mat.softphysics.bio-ph
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受限手性活性物质的几何诱导动力学

Geometry-Induced Dynamics of Confined Chiral Active Matter

Archit Negi, Kazusa Beppu, Yusuke T. Maeda

AI总结:

该研究针对手性活性物质中物理约束与手性运动的相互作用机制不明确的问题,通过对圆形边界下的手性自驱动粒子开展数值模拟,发现粒子手性会显著改变受限集体运动形式,且取向变化平衡是有序运动的关键,明确了位阻边界效应对手性活性物质的调控作用。

摘要:

控制活性物质的运动是一个核心问题,近期在非平衡物理、化学工程到生物学等领域受到广泛关注。目前已开发出多种调控活性物质的方法,其中将活性物质物理限制在有限空间内,以及具有破缺旋转对称性(手性)的活性物质是两种主流机制。然而,由物理约束导致的图案形成与手性运动引发的有序化之间的相互作用仍有待更深入的理解。本研究对圆形边界约束下的手性自驱动粒子开展了数值模拟。受限自驱动粒子的集体运动形式会因其手性的不同而产生显著差异。粒子间相互作用与边界壁带来的取向变化之间的平衡,是产生有序集体运动的关键。本研究结果阐明了空间位阻边界效应在调控手性活性物质中的作用。

英文摘要:

Controlling the motion of active matter is a central issue that has recently garnered significant attention in fields ranging from non-equilibrium physics to chemical engineering and biology. Distinct methods for controlling active matter have been developed, and physical confinement to limited space and active matter with broken rotational symmetry (chirality) are two prominent mechanisms. However, the interplay between pattern formation due to physical constraints and the ordering by chiral motion needs to be better understood. In this study, we conduct numerical simulations of chiral self-propelled particles under circular boundary confinement. The collective motion of confined self-propelled particles can take drastically different forms depending on their chirality. The balance of orientation changes between particle interaction and the boundary wall is essential for generating ordered collective motion. Our results clarify the role of the steric boundary effect in controlling chiral active matter.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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