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Published Online May 2, 2002
Science DOI: 10.1126/science.1071265

Reports

Submitted on February 25, 2002
Accepted on April 18, 2002

Design and Control of Patterns of Wave Propagation in Excitable Media

Tatsunari Sakurai 1, Eugene Mihaliuk 1, Florin Chirila 1, Kenneth Showalter 1*

1 Department of Chemistry, West Virginia University, Morgantown, WV 26506 USA.

* To whom correspondence should be addressed. E-mail: kshowalt{at}wvu.edu.

Intricate patterns of wave propagation are exhibited in a chemical reaction-diffusion system with spatiotemporal feedback. Wave behavior is controlled by imposing feedback-regulated excitability gradients to 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.


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Science. ISSN 0036-8075 (print), 1095-9203 (online)