Experimental logical gates in a reaction-diffusion medium: The XOR gate and beyond

Adamatzky, Andrew; de Lacy Costello, Ben

Abstract

We exploit the particulars of diffusive wave front interactions in certain types of two-reactant reaction-diffusion medium to construct a laboratory prototype of an XOR gate. In the design, the values of the logic variables are represented by the presence or absence of a precipitate, “wires” are constructed of a substrate loaded gel, and the computation is based on diffusive wave dynamics. We also discuss implementation of AND gate and study a three-valued composition, derived from the gate dynamic, and discuss possible logics that could be derived from this composition. © 2002 The American Physical Society.

• Journal Article Type: Article
• Publication Date: Oct 14, 2002
• Journal: Physical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics
• Print ISSN: 1063-651X
• Publisher: American Physical Society
• Peer Reviewed: Peer Reviewed
• Volume: 66
• Issue: 4
• Pages: 6
• DOI: https://doi.org/10.1103/PhysRevE.66.046112
• Keywords: experimental logic gates, reaction-diffusion medium, XOR gate
• Public URL: https://uwe-repository.worktribe.com/output/1079561
• Publisher URL: http://dx.doi.org/10.1103/PhysRevE.66.046112