Propagation and refraction of chemical waves generated by local periodic forcing in a reaction-diffusion model.
We study wave propagation, interaction, and transmission across the boundary between two chemical media in a model of an oscillatory reaction-diffusion medium subjected to local periodic forcing. The forced waves can be either outwardly (OP) or inwardly propagating (IP), depending on the dispersion of the medium. Competition among forced waves, spontaneous spiral waves, and bulk oscillations is studied for both cases. We demonstrate development of a negatively refracted wave train when forced waves traverse the boundary between the OP medium and the IP medium.
Physical Science Department, Southern Utah University, 351 W. University Blvd., Cedar City, Utah 84720, USA.
Renwu
R
Zhang
Lingfa
L
Yang
Anatol M
AM
Zhabotinsky
Irving R
IR
Epstein