Localized Chemical Wave Emission and Mode Switching in a Patterned Excitable Medium

K. J. M. Bishop and B. A. Grzybowski
Phys. Rev. Lett. 97, 128702 – Published 21 September 2006
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Abstract

Chemical waves are initiated from complex geometries in the excitable Belosouv-Zhabotinsky medium using a wet stamping technique. Because of the coupling between the system’s chemical kinetics and geometry, waves are emitted only from selected locations. By varying the nature of the wave-triggering reagent (here formaldehyde or methanol), it is possible to switch between two spatially distinct modes of wave emission. The system’s dynamics is studied numerically, and the results of modeling agree with experimental observations.

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  • Received 22 November 2005

DOI:https://doi.org/10.1103/PhysRevLett.97.128702

©2006 American Physical Society

Authors & Affiliations

K. J. M. Bishop and B. A. Grzybowski*

  • Department of Chemical and Biological Engineering and Northwestern Institute for Complexity, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, USA

  • *Corresponding author. Electronic address: grzybor@northwestern.edu

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Issue

Vol. 97, Iss. 12 — 22 September 2006

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