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An Experimental Design Method Leading to Chemical Turing Patterns
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Journal Article
An Experimental Design Method Leading to Chemical Turing Patterns
2009
Overview
Chemical reaction-diffusion patterns often serve as prototypes for pattern formation in living systems, but only two isothermal single-phase reaction systems have produced sustained stationary reaction-diffusion patterns so far. We designed an experimental method to search for additional systems on the basis of three steps: (i) generate spatial bistability by operating autoactivated reactions in open spatial reactors; (ii) use an independent negative-feedback species to produce spatiotemporal oscillations; and (iii) induce a space-scale separation of the activatory and inhibitory processes with a low-mobility complexing agent. We successfully applied this method to a hydrogen-ion autoactivated reaction, the thiourea-iodate-sulfite (TuIS) reaction, and noticeably produced stationary hexagonal arrays of spots and parallel stripes of pH patterns attributed to a Turing bifurcation. This method could be extended to biochemical reactions.
Publisher
American Association for the Advancement of Science,The American Association for the Advancement of Science,American Association for the Advancement of Science (AAAS)
Subject
Biological and medical sciences
/ Exact sciences and technology
/ Fundamental and applied biological sciences. Psychology
/ Gels
/ General and physical chemistry
/ Kinetics
/ Mechanisms. Catalysis. Electron transfer. Models
/ Physical chemistry in biology
/ Protons
