Bromomalonic-acid-induced transition from trigger wave to big wave in the Belousov-Zhabotinsky reaction
The Marangoni effects on chemical waves in the ferroin-catalyzed Belousov-Zhabotinsky reaction were studied. The main purpose of the present study was to understand the mechanism of the big wave, an accelerative chemical wave involving surface-tension-driven fluid motions. Spatiotemporal variations of surface tension caused by a chemical wave were measured using the Wilhelmy method. The transition from conventional trigger waves to big waves, due to a concentration change of bromomalonic acid, was observed. The strong surface activity of the bromomalonic acid which was responsible for the transition was also observed. It led to an acceleration of the big waves through the Marangoni effect.
Inomoto
O
Institute of Environmental Systems, Graduate School of Engineering, Kyushu University, Fukuoka, Japan.
Abe
K
Amemiya
T
Yamaguchi
T
Kai
S