Título:
|
Regular wave propagation out of noise in chemical active media
|
Autor/a:
|
Alonso Muñoz, Sergio; Sendiña Nadal, Irene; Pérez Muñuzuri, Vicente; Sancho, José M.; Sagués i Mestre, Francesc
|
Otros autores:
|
Universitat de Barcelona |
Abstract:
|
A pacemaker, regularly emitting chemical waves, is created out of noise when an excitable photosensitive Belousov-Zhabotinsky medium, strictly unable to autonomously initiate autowaves, is forced with a spatiotemporal patterned random illumination. These experimental observations are also reproduced numerically by using a set of reaction-diffusion equations for an activator-inhibitor model, and further analytically interpreted in terms of genuine coupling effects arising from parametric fluctuations. Within the same framework we also address situations of noise-sustained propagation in subexcitable media. |
Materia(s):
|
-Química física -Física estadística -Dinàmica de fluids -Chemistry, Physical and theoretical -Statistical physics -Fluid dynamics |
Derechos:
|
(c) American Physical Society, 2001
|
Tipo de documento:
|
Artículo Artículo - Versión publicada |
Editor:
|
American Physical Society
|
Compartir:
|
|