Density wave propagation of a wave train in a closed excitable medium
Density wave propagation of a wave train in a closed excitable medium
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DOI：
10.1103/physreve.84.046203
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发表时间：
2011-10-05
影响因子：
2.4
通讯作者：
Nakata, Satoshi
中科院分区：
文献类型：
--
作者：
Suematsu, Nobuhiko J.;Sato, Taisuke;Nakata, Satoshi
可激发反应扩散介质中的波列由于各个波之间的相互作用而表现出各种时空模式。在本文中，我们报告了一个新的时空模式的波列在一个封闭的可激发介质。我们用Ru（bpy）（3）（2+）作催化剂的光敏Belousov-Zhabotinsky反应进行了实验，并用FitzHugh-Nagumo方程进行了数值计算。以局部分布的波列作为初始条件，系统地改变波的数目。在实验和数值计算中，密度波的传播都是在大量波的弛豫过程中形成的波列中进行的。我们的研究结果表明，密度波的传播起源于抑制波之间的相互作用。
A wave train in an excitable reaction-diffusion medium shows a variety of spatiotemporal patterns as a result of interactions between the individual waves. In this paper, we report a novel spatiotemporal pattern in a wave train in a closed excitable medium. We carried out experiments using a photosensitive Belousov-Zhabotinsky reaction with Ru(bpy)(3)(2+) as a catalyst and a numerical calculation using the FitzHugh-Nagumo equation. A wave train was locally distributed as an initial condition and the number of waves was systematically varied. In both the experiment and numerical calculation, density wave propagation was formed in a wave train during relaxation with a large number of waves. Our results suggest that density wave propagation originates from inhibitory interaction between the waves.