Termination mechanisms of Turing patterns in growing systems
Gabriel Morgado, Laurence Signon, Bogdan Nowakowski, and Annie Lemarchand
Acta Physica Polonica B (2019) Vol. 50 , No 7
The question of the termination of a periodic spatial structure of Turingtype in a growing system is addressed in a chemical engineering perspective and a biomimetic approach. The effects of the dynamical parameters on the stability and the wavelength of the structure are analytically studied and used to propose experimental conditions for which a Turing pattern stops by itself with a decreasing wavelength. The proposed mechanism is successfully checked by the numerical integration of the equations governing the dynamics of the activator and the inhibitor. We conclude that a local increase of the concentration of the reservoir which controls the injection rate of the inhibitor into the system can be used to achieve the appropriate termination of a Turing pattern.