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Originally published in Science Express on 2 May 2002
Science 14 June 2002:
Vol. 296. no. 5575, pp. 2009 - 2012
DOI: 10.1126/science.1071265
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Reports

Design and Control of Wave Propagation Patterns in Excitable Media

Tatsunari Sakurai, Eugene Mihaliuk, Florin Chirila, Kenneth Showalter*

Intricate patterns of wave propagation are exhibited in a chemical reaction-diffusion system with spatiotemporal feedback. Wave behavior is controlled by feedback-regulated excitability gradients that guide propagation in specified directions. Waves interacting with boundaries and with other waves are observed when interaction terms are incorporated into the control algorithm. Spatiotemporal feedback offers wide flexibility for designing and controlling wave behavior in excitable media.

Department of Chemistry, West Virginia University, Morgantown, WV 26506, USA.
*   To whom correspondence should be addressed. E-mail: kshowalt{at}wvu.edu

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