Stopping and initiation of a chemical pulse at the interface of excitable media with different diffusivity.
Stopping and initiation of a chemical pulse at the interface of excitable media with different diffusivity.
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在具有不同扩散率的可激发介质的界面处停止和启动化学脉冲。
DOI：
10.1103/physreve.76.066201
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发表时间：
2007
期刊：
影响因子：
--
通讯作者：
S. Kinoshita
中科院分区：
文献类型：
--
作者：
J. Miyazaki;S. Kinoshita
利用Belousov-Zhabotinsky反应系统，实验研究了具有不同扩散性质的可激发介质界面处的化学脉冲动力学。当化学脉冲从较大的扩散区传播到较小的扩散区时，它在界面处停止并形成稳定的激发带。此外，由该带激发的脉冲串随后出现。提出了一个简单的一维非连续扩散模型，并进行了数值模拟，显示出良好的协议与实验。单向脉冲传播的界面上强烈建议的基础上提出的模型。
The dynamics of a chemical pulse at the interface of excitable media having different diffusion properties is presented experimentally using the Belousov-Zhabotinsky reaction system. When a chemical pulse propagates from a larger diffusion region to a smaller diffusion region, it stops and forms a steady excitation band at the interface. Furthermore, a pulse train stimulated by this band appears subsequently. A simple one-dimensional model with discontinuous diffusion is proposed, and a numerical simulation is performed that shows good agreement with the experiment. Unidirectional pulse propagation across the interface is strongly suggested on the basis of the proposed model.