We consider three-dimensional Turing patterns and their isoconcentration surfaces corresponding to the equilibrium concentration of the reaction kinetics. We call these surfaces equilibrium concentration surfaces (EC surfaces). They are the interfaces between the regions of "high" and "low" concentrations in Turing patterns. We give alternate characterizations of EC surfaces by means of two variational principles, one of them being that they are optimal for diffusive transport. Several examples of EC surfaces are considered. Remarkably, they are often very well approximated by certain minimal surfaces. We give a dynamical explanation for the emergence of Scherk's surface in certain cases, a structure that has been observed numerically previously in [De Wit et al., 1997].
International Journal of Bifurcation & Chaos in Applied Sciences & Engineering
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Electronic version of an article published as International Journal of Bifurcation & Chaos in Applied Sciences & Engineering. Feb2008, Vol. 18 Issue 2, p391-406. DOI: 10.1142/S0218127408020355, © World Scientific Publishing Company, http://www.worldscientific.com/loi/ijbc
Glimm, Tilmann and Hentschel, H. G. E., "On Isoconcentration Surfaces of Three Dimensional Turing Patterns" (2008). Mathematics. Paper 55.