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

de Lacy Costello, Ben; Adamatzky, Andrew

Abstract

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.

• 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
• DOI: https://doi.org/10.1016/j.chaos.2004.11.056
• Keywords: collision-based gates, Belousov-Zhabotinsky medium
• Public URL: https://uwe-repository.worktribe.com/output/1048299
• Publisher URL: http://dx.doi.org/10.1016/j.chaos.2004.11.056