论文标题
狭窄的示例时间和圆形域中的活性颗粒的排序
Narrow-escape time and sorting of active particles in circular domains
论文作者
论文摘要
现在已经很好地确定，可以对Microswimmers进行分类或隔离，以制造合适的微流体设备或使用外部场。一个自然的问题是，如何使用这些技术来划分不同的运动能力。在本文中，使用稀数极限的数值模拟，我们研究了运动参数（持久性和速度的时间）如何影响来自圆形域的活性颗粒的狭窄eScape时间。我们表明，逃生时间在两个渐近方案之间进行了交叉。交叉的控制参数是活动运动的持久长度与圆形域的典型长度尺度之间的比率。我们探索利用此发现的可能性，以通过运动参数对活动粒子进行分类。
It is now well established that microswimmers can be sorted or segregated fabricating suitable microfluidic devices or using external fields. A natural question is how these techniques can be employed for dividing swimmers of different motility. In this paper, using numerical simulations in the dilute limit, we investigate how motility parameters (time of persistence and velocity) impacts the narrow-escape time of active particles from circular domains. We show that the escape time undergoes a crossover between two asymptotic regimes. The control parameters of the crossover is the ratio between persistence length of the active motion and the typical length scale of the circular domain. We explore the possibility of taking advantage of this finding for sorting active particles by motility parameters.
