活性游泳体通过各向异性多孔壁的渗透动力学
Permeation dynamics of active swimmers through anisotropic porous walls
AI总结：
本研究以衣藻为模型，通过微迷宫实验揭示柱状障碍物的形状和取向各向异性在不同时间尺度上显著影响活性游泳体的渗透动力学，并探讨隔室间的交换动力学。
摘要：
大多数活体微生物的自然栖息地以复杂结构为特征，这种结构通常由土壤等多孔介质形成。运动微生物的动力学和输运特性受到拥挤且局部各向异性环境的强烈影响。以衣藻为模型系统，我们通过追踪微游泳体的轨迹并分析其统计特性，探索活性胶体通过障碍物结构化壁的渗透过程。利用由圆柱形或细长柱状障碍物构成的微迷宫，我们证明柱体形状和取向的各向异性在不同时间尺度上强烈影响微游泳体的动力学。此外，我们讨论了由柱阵列隔开的两个隔室之间微游泳体交换的动力学。
英文摘要：
Natural habitats of most living microorganisms are distinguished by a complex structure often formed by a porous medium such as soil. The dynamics and transport properties of motile microorganisms are strongly affected by crowded and locally anisotropic environments. Using \chlamy as a model system, we explore the permeation of active colloids through a structured wall of obstacles by tracking microswimmers' trajectories and analysing their statistical properties. Employing micro-labyrinths formed by cylindrical or elongated pillars, we demonstrate that the anisotropy of the pillar's form and orientation strongly affects the microswimmers' dynamics on different time scales. Furthermore, we discuss the kinetics of the microswimmer exchange between two compartments separated by an array of pillars.
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