Logical Functions of a Cross Junction of Excitable Chemical Media

We discuss properties of a cross junction composed of active areas, in which the Belousov−Zhabotinsky reaction proceeds, and passive stripes. The response of such a junction with respect to pulses of excitation arriving from perpendicular directions is studied. It is shown that the device works as a...

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Bibliographic Details
Published in:The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory Molecules, spectroscopy, kinetics, environment, & general theory, 2001-09, Vol.105 (35), p.8189-8195
Main Authors: Sielewiesiuk, Jakub, Górecki, Jerzy
Format: Article
Language:English
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Summary:We discuss properties of a cross junction composed of active areas, in which the Belousov−Zhabotinsky reaction proceeds, and passive stripes. The response of such a junction with respect to pulses of excitation arriving from perpendicular directions is studied. It is shown that the device works as a coincidence detector because the second pulse is stopped if it arrives earlier than a certain characteristic time after the first one. Using the Rovinsky−Zhabotinsky model, we calculate the size of the cross junction and specify its temporal characteristics. We suggest how the cross junction can work as a switch of a chemical signal.
ISSN:1089-5639
1520-5215
DOI:10.1021/jp011072v