Differential susceptibility to noise of mixed Turing and Hopf modes in a photosensitive chemical medium
Rights accessOpen Access
We report on experiments with the photosensitive chlorine dioxide-iodine-malonic acid reaction (CDIMA) when forced with a random (spatiotemporally) distributed illumination. Acting on a mixed mode consisting of oscillating spots, close enough to the Hopf and Turing codimension-two bifurcation, we observe attenuation of oscillations while the spatial pattern is preserved. Numerical simulations confirm and extend these results. All together these observations point out to a larger vulnerability of the Hopf with respect to the Turing mode when facing noise of intermediate intensity and small correlation parameters.
CitationAlonso, S.; Míguez, D.; Sagués, F. Differential susceptibility to noise of mixed Turing and Hopf modes in a photosensitive chemical medium. "Europhysics letters", 31 Desembre 2007, vol. 81, p. 30006-1-30006-6.