Hildebrand M, Skødt H, Showalter K
Department of Chemistry, West Virginia University, Morgantown, West Virginia 26506-6045, USA.
Phys Rev Lett. 2001 Aug 20;87(8):088303. doi: 10.1103/PhysRevLett.87.088303. Epub 2001 Aug 6.
Domains containing spiral waves form on a stationary background in a photosensitive Belousov-Zhabotinsky reaction with light-induced alternating nonlocal feedback. Complex behavior of colliding and splitting wave fragments is found with feedback radii comparable to the spiral wavelength. A linear stability analysis of the uniform stationary states in an Oregonator model reveals a spatial symmetry breaking instability. Numerical simulations show behavior in agreement with that found experimentally and also predict a variety of other new patterns.
在具有光诱导交替非局部反馈的光敏贝洛索夫-扎博廷斯基反应中，包含螺旋波的区域在静止背景上形成。当反馈半径与螺旋波长可比时，发现了波片段碰撞和分裂的复杂行为。对俄勒冈振子模型中均匀静止态的线性稳定性分析揭示了一种空间对称破缺不稳定性。数值模拟显示的行为与实验结果一致，并且还预测了各种其他新图案。
