Dividing Blobs, Chemical Flowers, and Patterned Islands in a Reaction−Diffusion System

Autor:	P. De Kepper, P. W. Davies, P. Blanchedeau, E. Dulos
Rok vydání:	1998
Předmět:	Bistability Chemistry business.industry Front (oceanography) State (functional analysis) Division (mathematics) Instability Molecular physics Supercritical fluid Optics Turing patterns Reaction–diffusion system Physical and Theoretical Chemistry business
Zdroj:	The Journal of Physical Chemistry A. 102:8236-8244
ISSN:	1520-5215 1089-5639
DOI:	10.1021/jp982034n
Popis:	In an one-side-fed open spatial reactor operated with the chlorine dioxide−iodine−malonic acid reaction in the presence of polyvinyl alcohol, we systematically studied the growth dynamics of Turing patterns after a supercritical parameter change. We describe different modes of propagation of the patterned state in an absolutely unstable uniform state, among which are a spot division and a finger splitting mode. We attribute these peculiar growth modes to the existence of two different uniform states and to a morphological instability of a propagating front linking these two states. In regions where bistability between the Turing state and a uniform state is obtained, the interface between the patterned state and the uniform state can be brought to a halt and thus localized patterned states are observed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b5d57d442829081615bf708f083055b8 https://doi.org/10.1021/jp982034n Zobrazit plný text záznamu