Towards arithmetic circuits in sub-excitable chemical media

Adamatzky, A., de Lacy Costello, B., Bull, L. and Holley, J. (2011) Towards arithmetic circuits in sub-excitable chemical media. Israel Journal of Chemistry, 51 (1). pp. 56-66. ISSN 0021-2148 Available from:

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A sub-excitable Belousov-Zhabotinsky medium exhibits localized travelling excitations (in contrast to an excitable medium exhibiting target or spiral waves). Initially assymetric perturbations give birth to excitation wave-fragments. The shape and velocity vectors of the wave-fragments are conserved, meaning they can travel for substantial distances in the reaction media. When the wave-fragments collide they may reflect, merge, or annihilate. We interpret wave-fragments as values of logical variables, and the post-collision states of the fragments as outputs of logical gates. We show how to cascade logical gates in primitive arithmetical circuits.

Item Type:Article
Uncontrolled Keywords:wave fragments,systems, motion, Belousov-Zhabotinsky reaction, excitable chemical medium, collision-based computing, nonequilibrium processes, computational chemistry
Faculty/Department:Faculty of Environment and Technology > Department of Computer Science and Creative Technologies
ID Code:20682
Deposited By: M. Clarke
Deposited On:25 Jul 2013 11:12
Last Modified:12 Apr 2016 12:20

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