arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1503.06454cond-mat.stat-mechcond-mat.softphysics.bio-ph
收藏

受限空间中自推进粒子的滚转动力学

Run-and-Tumble Dynamics of Self-Propelled Particles in Confinement

Jens Elgeti, Gerhard Gompper

摘要:

奔跑翻滚动力学是一种广泛存在的游动细菌机制。在二维和三维空间低密度极限条件下,从理论上和数值上研究了不透水表面附近翻滚运动的微型游泳者的积累。单峰和指数分布的运行长度被认为是。与{指数分布的游程长度}相反,恒定的游程长度导致表面附近颗粒的密度分布中的{峰值和耗尽区域}。最后,我们提出了一个普遍的积累规律,为大通道宽度,这不仅适用于运行和翻滚的游泳者,但也适用于许多其他类型的自推进粒子。

英文摘要:

Run-and-tumble dynamics is a wide-spread mechanism of swimming bacteria. The accumulation of run-and-tumble microswimmers near impermeable surfaces is studied theoretically and numerically in the low-density limit in two and three spatial dimensions. Both uni-modal and exponential distributions of the run lengths are considered. Constant run lengths lead to {peaks and depletions regions} in the density distribution of particles near the surface, in contrast to {exponentially-distributed run lengths}. Finally, we present a universal accumulation law for large channel widths, which applies not only to run-and-tumble swimmers, but also to many other kinds of self-propelled particles.

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。

↑