Langham, Jacob and Barkley, Dwight (2013) Non-specular reflections in a macroscopic system with wave-particle duality : spiral waves in bounded media. Chaos: An Interdisciplinary Journal of Nonlinear Science, Volume 23 (Number 1). doi:10.1063/1.4793783

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Abstract

Spiral waves in excitable media possess both wave-like and particle-like properties. When resonantly forced (forced at the spiral rotation frequency) spiral cores travel along straight trajectories, but may reflect from medium boundaries. Here, numerical simulations are used to study reflections from two types of boundaries. The first is a no-flux boundary which waves cannot cross, while the second is a step change in the medium excitability which waves do cross. Both small-core and large-core spirals are investigated. The predominant feature in all cases is that the reflected angle varies very little with incident angle for large ranges of incident angles. Comparisons are made to the theory of Biktashev and Holden. Large-core spirals exhibit other phenomena such as binding to boundaries. The dynamics of multiple reflections is briefly considered.

Item Type:	Journal Article
Divisions:	Faculty of Science > Mathematics
Journal or Publication Title:	Chaos: An Interdisciplinary Journal of Nonlinear Science
Publisher:	American Institute of Physics
ISSN:	1054-1500
Official Date:	March 2013
Dates:	Date Event March 2013 Published
Volume:	Volume 23
Number:	Number 1
Number of Pages:	9
DOI:	10.1063/1.4793783
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Open Access

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