Two-tier symmetry-breaking model of patterns on a catalytic surface

L. M. Pismen, R. Imbihl, B. Y. Rubinstein, M. I. Monin
1998 Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics  
We present a two-tier symmetry-breaking model on a catalytic surface mediated by propagating transition fronts on two different scales. On the microscopic ͑nanoscale͒ level, there is a competition between two alternative surface phases biased by the local level of a diffusing species. On the microscopic scale, relative abundance of surface phases acts as a refractive variable biasing the balance between alternative states of the diffusive activator, thereby causing either global oscillations or
more » ... bal oscillations or domain oscillations and spiral waves in an extended system. The distribution of surface phases evolves on a longer time scale due to a curvature effect, exhibiting a kind of a ripening process coupled with oscillatory dynamics.
doi:10.1103/physreve.58.2065 fatcat:b2yghgitfvexhjpfittjspdoui