Coexistence of wave propagation and oscillation in the photosensitive Belousov-Zhabotinsky reaction on a circular route.
The photosensitive Belousov-Zhabotinsky (BZ) reaction was investigated on a circular ring, which was drawn using computer software and then projected on a film soaked with BZ solution using a liquid-crystal projector. Under the initial conditions, a chemical wave propagated with a constant velocity on the black ring under a bright background. When the background was rapidly changed to dark, coexistence of the oscillation on part of the ring and propagation of the chemical wave on the other part was observed. These experimental results are discussed in relation to the nature of the photosensitive BZ reaction and theoretically reproduced based on a reaction-diffusion system using the modified Oregonator model.
Nakata
Satoshi
S
Department of Chemistry, Nara University of Education, Nara 630-8528, Japan. nakatas@nara-edu.ac.jp
Morishima
Sayaka
S
Ichino
Takatoshi
T
Kitahata
Hiroyuki
H
D015082:2,2'-Dipyridyl / Q000031:analogs & derivatives* / Q000737:chemistry; D003198:Computer Simulation; D056831:Coordination Complexes; D010777:Photochemistry / Q000379:methods*; D017975:Ruthenium Compounds
D015082:2,2'-Dipyridyl; D056831:Coordination Complexes; C547232:tris(2,2-bipyridine)-ruthenium(II); D017975:Ruthenium Compounds