Transition to irregular dynamics of spiral waves under two-channel feedback

被引：26

作者：

Goldschmidt, DM ^{[1
]}

Zykov, VS ^{[1
]}

Muller, SC ^{[1
]}

机构：

[1] Otto Von Guericke Univ, Inst Expt Phys, D-39106 Magdeburg, Germany

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 80卷 / 23期

关键词：

D O I：

10.1103/PhysRevLett.80.5220

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The effect of a feedback-controlled sequence of short light pulses on spiral wave dynamics in the Belousov-Zhabotinsky reaction is investigated. Each stimulus is applied at a moment that corresponds to the passage of a wave front through one of two measuring points located in the excitable medium. Such a two-channel feedback destroys the initially regular dynamics and results in several complex regimes such as localized irregular motion, "spatial intermittency," or an irregular drift. The experimental results are verified and complemented by numerical simulations performed with the two-component Oregonator model.

引用

页码：5220 / 5223

页数：4

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