As a simple physico-chemical system that exhibits droplet motion induced by
the pattern formation inside it, we investigate the motion of a droplet of Belousov-
Zhabotinsky (BZ) reaction medium depending on the size and initial point of the chemical
wave. We also observe the profile of Marangoni flow induced in the BZ droplet. In our
previous paper, we reported the BZ-droplet motion and proposed a mechanism based on
low-Reynolds-number hydrodynamics. Here, we discuss the validity of the suggested
mechanism based on experimental results.
Keywords: Active matter, Belousov-Zhabotinsky reaction, droplet motion, interfacial tension, Marangoni
effect, pattern formation.
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