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arXiv 1402.3260cond-mat.softcond-mat.stat-mech
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无序景观中活性物质的传输与干扰

Active Matter Transport and Jamming on Disordered Landscapes

C. Reichhardt, C. J. Olson Reichhardt

摘要:

我们用数值方法研究了由固定障碍物组成的随机无序景观上的漂移力驱动的主动奔跑翻滚粒子的运输。对于增加的运行长度,净颗粒传输最初增加之前达到最大值,并在较大的运行长度下降。传输减少与簇或活晶体状态的形成有关,这些状态被障碍物局部堵塞或阻塞。我们还发现,该系统动态堵塞在较低的颗粒密度时,运行长度增加。我们的研究结果表明,有一个最佳的活性水平,活性物质运输通过淬火无序,并可能是重要的理解在复杂环境中的生物运输或应用程序的活性物质颗粒在随机介质中。

英文摘要:

We numerically examine the transport of active run-and-tumble particles driven with a drift force over random disordered landscapes comprised of fixed obstacles. For increasing run lengths, the net particle transport initially increases before reaching a maximum and decreasing at larger run lengths. The transport reduction is associated with the formation of cluster or living crystal states that become locally jammed or clogged by the obstacles. We also find that the system dynamically jams at lower particle densities when the run length is increased. Our results indicate that there is an optimal activity level for active matter transport through quenched disorder, and could be important for understanding biological transport in complex environments or for applications of active matter particles in random media.

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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