Binary collisions between wave-fragments in a sub-excitable Belousov-Zhabotinsky medium

In numerical studies we describe the phenomenology of interactions between localized, shape-preserving, wave-fragments in the sub-excitable Belousov-Zhabotinsky medium and build a representative catalog of wave-fragment collisions that include annihilation, fusion, and quasi-elastic types. We envisage the phenomena discovered will be used in signal tuning and general programming of collision-based [Adamatzky A, editor, Collision-based computing. Springer-Verlag, 2002] excitable chemical computers.