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首页> 外文期刊>Journal of the Physical Society of Japan >Hydrodynamically Induced Collective Motion of Optically Driven Colloidal Particles on a Circular Path
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Hydrodynamically Induced Collective Motion of Optically Driven Colloidal Particles on a Circular Path

机译：光学驱动胶体颗粒对圆形路径的流体动力学诱导的集体运动

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摘要

Among typical active matter such as self-propelled micro-objects, the characteristic collective motion originating from the hydrodynamic interaction between constituents has been observed in both biological and artificial systems. In illustrating such motion of micrometer-size particles in a one-dimensional optically driven system with a low Reynolds number, we highlight the importance of the hydrodynamic interaction. We show the appearance of regular stationary and dynamic arrangements resembling "crystals" or "clusters" observed in the equilibrium state. A transition in the collective motion has been observed by varying the hydrodynamic interaction in a system of two particle sizes and in a spatially confined system. An optical manipulation technique and the related hydrodynamic equations are also discussed. These are useful tools for elucidating the complex collective behavior of the hydrodynamically coupled micro-objects.
机译：在典型的活性物质之类的诸如自推进的微对象之类的中，在生物和人造系统中，已经观察到来自组分之间的流体动力学相互作用的特征集体运动。 在用低雷诺数的一维光学驱动系统中示出微米尺寸粒子的这种运动，突出了流体动力相互作用的重要性。 我们展示了在平衡状态下观察到类似于“晶体”或“晶体”的定期静止和动态布置的外观。 通过改变两个粒度的系统中的水动力相互作用和空间限制系统，已经观察到集体运动中的过渡。 还讨论了光学操纵技术和相关的流体动力学方程。 这些是用于阐明流体动力学耦合微对象的复杂集体行为的有用工具。

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