Transport of the moving barrier driven by chiral active particles

Transport of the moving barrier driven by chiral active particles
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手性活性粒子驱动的移动势垒的传输

DOI:
10.1063/1.5018371
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发表时间:
2018-03
影响因子:
4.4
通讯作者:
Ai Bao-quan
Ai Bao-quan
中科院分区:
化学2区
文献类型:
--
作者:
Liao Jing-jing;Huang Xiao-qun;Ai Bao-quan

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在二维通道中研究了暴露于手性活性粒子浴中的移动 V 形屏障的传输。由于活性粒子的手性和势垒位置的横向不对称性,活性粒子可以驱动和引导势垒在纵向上的定向传输。屏障的传输由活性粒子的手性决定。移动的屏障和活性粒子以相反的方向移动。势垒的平均速度远大于活性粒子的平均速度。存在势垒平均速度取最大值时的最佳参数(手性、自推进速度、堆积分数和通道宽度)。特别是,定制屏障的几何形状和活性浓度提供了控制活性介质中微生物或货物的运输特性的新策略。
Transport of a moving V-shaped barrier exposed to a bath of chiral active particles is investigated in a two-dimensional channel. Due to the chirality of active particles and the transversal asymmetry of the barrier position, active particles can power and steer the directed transport of the barrier in the longitudinal direction. The transport of the barrier is determined by the chirality of active particles. The moving barrier and active particles move in the opposite directions. The average velocity of the barrier is much larger than that of active particles. There exist optimal parameters (the chirality, the self-propulsion speed, the packing fraction, and the channel width) at which the average velocity of the barrier takes its maximal value. In particular, tailoring the geometry of the barrier and the active concentration provides novel strategies to control the transport properties of micro-objects or cargoes in an active medium.
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发表时间: 2017-09
期刊: Physical review. E
影响因子: --
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