Pattern Formation by Interacting Chemical Fronts

摘要: Experiments on a bistable chemical reaction in continuously fed thin gel layer reveal new type of spatiotemporal pattern, one which fronts propagate at constant speed until they reach critical separation (typically 0.4 millimeter) and stop. The resulting asymptotic state is highly irregular stationary pattern that contrasts with the regular patterns such as hexagons, squares, stripes have been observed many nonequilibrium systems. are initiated by finite amplitude perturbation rather than through spontaneous symmetry breaking.