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Traveling-wave fragments in anisotropic excitable media

F. Mertens, N. Gottschalk, M. Bär, M. Eiswirth, A. Mikhailov, and R. Imbihl
Phys. Rev. E 51, R5193(R) – Published 1 June 1995
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Abstract

Experiments with an anisotropic chemical excitable medium—a catalytic chemical reaction on a single crystal surface—reveal a kind of stable wave pattern representing single traveling-wave fragments. Their existence is attributed to the presence of a strong state-dependent diffusion anisotropy in the medium. A simple theory of traveling fragments setting general conditions for their observation is proposed. Its conclusions are confirmed by numerical simulations of a reaction-diffusion model. Our analysis suggests that traveling-wave fragments are a general property of excitable media with strong state-dependent anisotropy.

  • Received 24 February 1995

DOI:https://doi.org/10.1103/PhysRevE.51.R5193

©1995 American Physical Society

Authors & Affiliations

F. Mertens, N. Gottschalk, M. Bär, M. Eiswirth, and A. Mikhailov

  • Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, D-14195 Berlin (Dahlem), Germany

R. Imbihl

  • Institut für Physikalische Chemie und Elektrochemie, Universität Hannover, Callinstrasse 3-3a, D-30167 Hannover, Germany

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Issue

Vol. 51, Iss. 6 — June 1995

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