Turing patterns in the chlorine dioxide-iodine-malonic acid reaction with square spatial periodic forcing |
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Authors: | Feldman Daniel Nagao Raphael Bánsági Tamás Epstein Irving R Dolnik Milos |
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Institution: | Department of Chemistry and Volen Center for Complex Systems, MS 015, Brandeis University, Waltham, MA 02454, USA. |
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Abstract: | We use the photosensitive chlorine dioxide-iodine-malonic acid reaction-diffusion system to study wavenumber locking of Turing patterns to two-dimensional "square" spatial forcing, implemented as orthogonal sets of bright bands projected onto the reaction medium. Various resonant structures emerge in a broad range of forcing wavelengths and amplitudes, including square lattices and superlattices, one-dimensional stripe patterns and oblique rectangular patterns. Numerical simulations using a model that incorporates additive two-dimensional spatially periodic forcing reproduce well the experimental observations. |
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