Kheowan O U, Zykov V S, Rangsiman O, Müller S C
Otto-von-Guericke-Universität, Institut für Experimentelle Physik, Magdeburg, Germany.
Phys Rev Lett. 2001 Mar 5;86(10):2170-3. doi: 10.1103/PhysRevLett.86.2170.
Spiral waves rotating in a thin layer of the light-sensitive Belousov-Zhabotinsky reaction can be controlled by the application of short light pulses at instants corresponding to the passage of a wave front through a measuring point. It is shown that such a feedback results in a drift of the spiral wave core along a discrete set of stable circular orbits centered at the measuring point, in good quantitative agreement with the theory of the resonance attractor recently developed. Variations of parameters in the feedback loop initiate transitions between orbits of different size. Thus a spiral wave drift can be induced along a snail-shaped trajectory with permanently growing distance from the measuring point.
在光敏感的贝洛索夫-扎博廷斯基反应的薄层中旋转的螺旋波，可以通过在波前经过测量点的瞬间施加短光脉冲来控制。结果表明，这种反馈会导致螺旋波核心沿着以测量点为中心的一组离散稳定圆形轨道漂移，这与最近发展的共振吸引子理论在定量上吻合良好。反馈回路中参数的变化会引发不同大小轨道之间的转变。因此，可以沿着与测量点距离不断增加的蜗牛状轨迹诱导螺旋波漂移。
