Spontaneous motion of a droplet coupled with a chemical wave
Spontaneous motion of a droplet coupled with a chemical wave
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DOI：
10.1103/physreve.84.015101
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发表时间：
2011-07-13
影响因子：
2.4
通讯作者：
Sumino, Yutaka
中科院分区：
文献类型：
--
作者：
Kitahata, Hiroyuki;Yoshinaga, Natsuhiko;Sumino, Yutaka
我们提出了一个反应扩散系统中液滴自发运动与内部动态模式耦合的框架。化学反应的时空顺序导致了表面张力的不均匀性，并由于马兰戈尼效应导致了由周围流动驱动的自推进。内部模式的数值计算与低雷诺数下流场的理论结果很好地再现了使用Belousov-Zhabotinsky反应介质的液滴所得到的实验结果。
We propose a framework for the spontaneous motion of a droplet coupled with internal dynamic patterns generated in a reaction-diffusion system. The spatiotemporal order of the chemical reaction gives rise to inhomogeneous surface tension and results in self-propulsion driven by the surrounding flow due to the Marangoni effect. Numerical calculations of internal patterns together with theoretical results of the flow fields at low Reynolds number reproduce well the experimental results obtained using a droplet of the Belousov-Zhabotinsky reaction medium.