Title:
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Regular wave propagation out of noise in chemical active media
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Author:
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Alonso Muñoz, Sergio; Sendiña Nadal, Irene; Pérez Muñuzuri, Vicente; Sancho, José M.; Sagués i Mestre, Francesc
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Other authors:
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Universitat de Barcelona |
Abstract:
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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. |
Subject(s):
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-Química física -Física estadística -Dinàmica de fluids -Chemistry, Physical and theoretical -Statistical physics -Fluid dynamics |
Rights:
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(c) American Physical Society, 2001
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Document type:
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Article Article - Published version |
Published by:
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American Physical Society
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