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Experimental implementation of collision-based gates in Belousov-Zhabotinsky medium

de Lacy Costello, Ben; Adamatzky, Andrew



We experimentally demonstrate that excitation wave-fragments in a Belousov-Zhabotinsky (BZ) medium with immobilised catalyst can be used to build elementary logical gates and circuits. Following our previous theoretical constructions [Adamatzky A. Collision-based computing in Belousov Zhabotinsky medium. Chaos, Solitons & Fractals 2004;21:1259-64] on embedding logical schemes in BZ medium, we represent True/False values of logical variables by presence/absence of wave-fragments. We show that when wave-fragments collide with each other they may annihilate, fuse, split and change their velocity vectors. Thus the values of logical variables represented by the wave-fragments change and certain logical operations are implemented. In the paper we provide examples of experimental logical gates, and present pioneer results in dynamic, architectureless computing in excitable reaction-diffusion systems. © 2005 Elsevier Ltd. All rights reserved.


de Lacy Costello, B., & Adamatzky, A. (2005). Experimental implementation of collision-based gates in Belousov-Zhabotinsky medium. Chaos, Solitons and Fractals, 25(3), 535-544.

Journal Article Type Article
Publication Date Aug 1, 2005
Journal Chaos, Solitons and Fractals
Print ISSN 0960-0779
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 25
Issue 3
Pages 535-544
Keywords collision-based gates, Belousov-Zhabotinsky medium
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