Microorganism billiards

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• 作者：Saverio E. Spagnolie ; ^{spagnolie@math.wisc.edu} ; Colin Wahl ; Joseph Lukasik ; Jean-Luc Thiffeault
• 关键词：Billiards ; Non-specular reflections ; Microorganism locomotion ; Sorting
• 刊名：Physica D: Nonlinear Phenomena
• 出版年：2017
• 出版时间：15 February 2017
• 年：2017
• 卷：341
• 期：Complete
• 页码：33-44
• 全文大小：792 K
• 卷排序：341

文摘

We analyze billiard motion with non-specular reflections in regular polygonal domains. Trajectories can be stable or chaotic depending on the departure angle and container geometry. Stable orbits are robust to small random fluctuations. A passive sorting device is proposed to separate microorganisms with different departure angles. Different departure angles result in trapping or diffusive trajectories in an environment of square obstacles.