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arXiv 1612.06992cond-mat.soft
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反向自驱动二元粒子的通道形成动力学:密度和有限系统尺寸的影响

Lane formation dynamics of oppositely self-driven binary particles: Effects of density and finite system size

Kosuke Ikeda, Kang Kim

摘要:

通过对二维系统的分子动力学模拟,研究了反向自驱动二元粒子的泳道形成动力学。我们的研究全面揭示了密度和系统大小对车道形成的影响。针对各向异性摩擦系数和期望速度的各种组合,系统地确定了区分无车道和车道状态的相图。当所需速度大大增加时,车道被破坏,观察到一个奇特的集群结构。车道结构的时间尺度和空间尺度之间的关系表现出强烈的系统规模效应。这种系统尺寸效应可以归因于与驱动格子气的类比。输运效率的特点是从尺度关系的车道形成的程度和不同车道之间的界面厚度。

英文摘要:

We examined the lane formation dynamics of oppositely self-driven binary particles by molecular dynamics simulations of a two-dimensional system. Our study comprehensively revealed the effects of the density and system size on the lane formation. The phase diagram distinguishing the no-lane and lane states was systematically determined for various combinations of the anisotropic friction coefficient and the desired velocity. A peculiar clustered structure was observed when the lane was destroyed by greatly increasing the desired velocity. A strong system size effect was demonstrated by the relationship between the temporal and spatial scales of the lane structure. This system size effect can be attributed to an analogy with the driven lattice gas. The transport efficiency was characterized from the scaling relation in terms of the degree of lane formation and the interface thickness between different lanes.

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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