M. Bar et al., PATTERN-FORMATION IN COMPOSITE EXCITABLE MEDIA, Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics, 52(6), 1995, pp. 5739-5742
The propagation of periodic reaction-diffusion waves (wave trains) on
a composite catalytic surface, whose subdomains are characterized by d
ifferent reaction kinetics, is-observed experimentally during CO oxida
tion and analyzed computationally with a realistic reaction-diffusion
model. Complete transmission as well as partial blocking of plane wave
s, creation of spirals as well as chemical turbulence due to presence
of a domain boundary with curved waves are found for different paramet
ers.