Probability of the emergence of helical precipitation patterns in the wake of reaction-diffusion fronts.
Probability of the emergence of helical precipitation patterns in the wake of reaction-diffusion fronts.
复制标题
反应扩散前沿后出现螺旋沉淀模式的概率。
DOI：
10.1103/physrevlett.110078303
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发表时间：
2013
影响因子：
8.6
通讯作者：
Z. Rácz
中科院分区：
文献类型：
--
作者：
Shibi Thomas;I. Lagzi;F. Molnár;Z. Rácz
研究了反应扩散锋面后出现的螺旋和螺旋析出模式。在我们的实验中，这些手性结构的出现具有明确的概率P(H)，这些概率受条件控制，例如试剂的初始浓度。我们开发了一个描述观察到的实验趋势的模型。结果表明，P(H)是由与锋面和不稳定降水模式有关的时间和长度尺度之间的微妙相互作用决定的，而且噪声幅度也起着可量化的作用。
Helical and helicoidal precipitation patterns emerging in the wake of reaction-diffusion fronts are studied. In our experiments, these chiral structures arise with well-defined probabilities P(H) controlled by conditions such as, e.g., the initial concentration of the reagents. We develop a model which describes the observed experimental trends. The results suggest that P(H) is determined by a delicate interplay among the time and length scales related to the front and to the unstable precipitation modes and, furthermore, that the noise amplitude also plays a quantifiable role.