MODELING OF TURING STRUCTURES IN THE CHLORITE IODIDE MALONIC-ACID STARCH REACTION SYSTEM
MODELING OF TURING STRUCTURES IN THE CHLORITE IODIDE MALONIC-ACID STARCH REACTION SYSTEM
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DOI：
10.1126/science.251.4994.650
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发表时间：
1991-02-08
期刊：
影响因子：
56.9
通讯作者：
EPSTEIN, IR
中科院分区：
文献类型：
--
作者：
LENGYEL, I;EPSTEIN, IR
最近在凝胶反应器中对碘化亚氯酸-丙二酸-淀粉反应进行的实验首次证明了图灵在1952年预测的对称破缺、反应扩散结构的存在。将描述系统时间行为的五变量模型简化为两变量模型，并对其空间行为进行了分析。所发现的结构的波长与实验观察到的完全一致。凝胶通过结合关键碘种发挥关键作用，从而使活化剂和抑制剂碘离子和亚氯酸盐离子的有效扩散系数分别产生必要的差异。
Recent experiments on the chlorite-iodide-malonic acid-starch reaction in a gel reactor give the first evidence of the existence of the symmetry breaking, reaction-diffusion structures predicted by Turing in 1952. A five-variable model that describes the temporal behavior of the system is reduced to a two-variable model, and its spatial behavior is analyzed. Structures have been found with wavelengths that are in good agreement with those observed experimentally. The gel plays a key role by binding key iodine species, thereby creating the necessary difference in the effective diffusion coefficients of the activator and inhibitor species, iodide and chlorite ions, respectively.