Spontaneous motion of a droplet coupled with a chemical wave

Hiroyuki Kitahata, Natsuhiko Yoshinaga, Ken H. Nagai, Yutaka Sumino

Research output: Contribution to journalArticlepeer-review

67 Citations (Scopus)


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.

Original languageEnglish
Article number015101
JournalPhysical Review E
Issue number1
Publication statusPublished - 2011 Jul 13


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