Manipulating chiral microswimmers in a channel.
Manipulating chiral microswimmers in a channel.
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DOI：
10.1103/physreve.90.062301
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发表时间：
2014-12
期刊：
影响因子：
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通讯作者：
Yunyun Li;P. Ghosh;F. Marchesoni;Baowen Li
中科院分区：
文献类型：
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作者：
Yunyun Li;P. Ghosh;F. Marchesoni;Baowen Li
本文数值模拟了过阻尼点状Janus粒子沿着二维周期性波纹窄通道的扩散。粒子的自推进速度被假定为旋转受到由转矩建模的固有偏置。打破通道相对于其轴的镜像对称性足以产生定向颗粒流，其取向和大小取决于通道几何形状和颗粒游泳性质。这意味着手性microswimmer漂移自主沿着一个狭窄的通道下更一般的不对称条件比以前报道的，其制造和技术应用的潜在影响的属性。
We numerically simulate the diffusion of overdampd pointlike Janus particles along narrow two-dimensional periodically corrugated channels with reflecting walls. The self-propulsion velocity of the particle is assumed to rotate subject to an intrinsic bias modeled by a torque. Breaking the mirror symmetry of the channel with respect to its axis suffices to generate a directed particle flow with orientation and magnitude which depend on the channel geometry and the particle swimming properties. This means that chiral microswimmers drift autonomously along a narrow channel under more general asymmetry conditions than previously reported, a property of potential impact on their fabrication and technological applications.