Noise-induced spatial periodicity in excitable chemical media
نویسنده
چکیده
We show that spatiotemporal noise acting on the illumination intensity of an excitable photosensitive Belousov–Zhabotinskii medium, modelled by the diffusively coupled two-component Oregonator kinetics, is able to extract a characteristic spatial frequency of the system in a resonant manner. We emphasize that thereby the system is locally initiated from steady state excitable conditions so the observed patterns are exclusively noise induced. Thus, the reported phenomenon is a novel observation of spatial coherence resonance in excitable chemical media. 2005 Elsevier B.V. All rights reserved.
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