Department of Chemistry, Brandeis University , Waltham, Massachusetts 02454-9110, United States.
J Phys Chem A. 2014 Apr 3;118(13):2393-400. doi: 10.1021/jp500432t. Epub 2014 Mar 19.
We study the growth dynamics of Turing patterns in the chlorine dioxide-iodine-malonic acid reaction-diffusion system in response to perturbations with visible light. We describe several mechanisms by which Turing patterns reappear after they are suppressed by illumination with a disc-shaped geometry. We observe that under specific conditions the patterns reorganize from a random configuration of spots and stripes to a set of ordered, concentric rings, which we refer to as target Turing patterns. These patterns closely resemble the unit cells of the Turing hexagonal superlattices known as black eye patterns. However, these target Turing patterns are not part of a larger superlattice structure, and they usually have a larger number of concentric rings. Numerical simulations support the experimental findings.
我们研究了在二氧化氯-碘-丙二酸反应扩散系统中，受可见光干扰时，图灵模式的生长动态。我们描述了几种机制，通过这些机制，图灵模式在圆盘几何形状的光照抑制后重新出现。我们观察到，在特定条件下，图案从随机的斑点和条纹配置重新组织成一组有序的同心环，我们称之为目标图灵模式。这些模式与称为黑眼模式的图灵六方超晶格的单元非常相似。然而，这些目标图灵模式不是更大超晶格结构的一部分，它们通常有更多的同心环。数值模拟支持实验结果。
