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Numerical modeling of bacteria propelled micromotors

机译:细菌推进微电机的数值模拟

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摘要

We describe a numerical model for simulating micro-objects immersed in a bath of self-propelled organisms. By using simplified models for swimming cells (2 beads rigidly connected and subject to a self-propelling force) and taking into account various interaction terms (collisions, hydrodynamics), we simulate different shaped devices immersed in the bacterial bath. Considering rotating cog-wheels and translating shuttles we demonstrate the emergence of unidirectional motions, whose efficiency depends on the object shape as well as on bacterial properties. The role of tumbling mechanism and hydrodynamic interactions is analyzed.
机译:我们描述了一个数值模型,用于模拟浸没在自走式生物浴中的微物体。通过使用简化的游泳细胞模型(2个刚性连接的珠子并受到自推进力的作用),并考虑到各种相互作用项(碰撞,流体动力学),我们模拟了浸入细菌浴中的不同形状的设备。考虑旋转齿轮和平移梭,我们证明了单向运动的出现,其效率取决于物体的形状以及细菌的性质。分析了翻滚机制和流体动力相互作用的作用。

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