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Issue 12, 2019
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Turing patterns on radially growing domains: experiments and simulations

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Abstract

We study Turing pattern formation in a system undergoing radial growth in two dimensions. The photosensitive chlorine dioxide–iodine–malonic acid reaction is illuminated to inhibit patterning, with a growing non-illuminated circular domain in which the pattern develops. We examine the relationship between the linear radial growth rate and the resulting pattern morphology. Faster growth causes the pattern to form parallel to the growing boundary as concentric rings, while slower growth leads to pattern formation perpendicular to the growing boundary. We observe three distinct growth modes for the Turing patterns, which also depend on the radial growth rate. The experimental results are qualitatively reproduced in numerical simulations using the Lengyel–Epstein model with an additional term to account for the photosensitivity of the reaction. These results may provide new insight into how patterns form in growing biological systems.

Graphical abstract: Turing patterns on radially growing domains: experiments and simulations

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Supplementary files

Article information


Submitted
21 Dec 2018
Accepted
05 Mar 2019
First published
06 Mar 2019

Phys. Chem. Chem. Phys., 2019,21, 6718-6724
Article type
Paper
Author version available

Turing patterns on radially growing domains: experiments and simulations

C. Konow, N. H. Somberg, J. Chavez, I. R. Epstein and M. Dolnik, Phys. Chem. Chem. Phys., 2019, 21, 6718
DOI: 10.1039/C8CP07797E

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