Filament Tension and Phase Locking of Meandering Scroll Waves.
Filament Tension and Phase Locking of Meandering Scroll Waves.
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蜿蜒涡卷波的灯丝张力和锁相。
DOI：
10.1103/physrevlett.119.258101
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发表时间：
2017
影响因子：
8.6
通讯作者：
Dierckx H
中科院分区：
文献类型：
--
作者：
Dierckx H
蜿蜒的螺旋波经常在兴奋介质中观察到，如Belousov-Zhabotinsky反应和心脏组织。我们推导了一般反应扩散系统中弯曲转子漂移动力学的理论，并将其应用于两种类型的外部扰动：外场和三维曲率诱导漂移。我们发现两种截然不同的状态：在细丝曲率较小的情况下，蜿蜒的涡旋波表现出细丝张力，其符号决定了稳定性和漂移方向。然而，在强外场或弯曲运动接近共振的情况下，可以预测和观察到弯曲模式的锁相。
Meandering spiral waves are often observed in excitable media such as the Belousov-Zhabotinsky reaction and cardiac tissue. We derive a theory for drift dynamics of meandering rotors in general reaction-diffusion systems and apply it to two types of external disturbances: an external field and curvature-induced drift in three dimensions. We find two distinct regimes: with small filament curvature, meandering scroll waves exhibit filament tension, whose sign determines the stability and drift direction. In the regimes of strong external fields or meandering motion close to resonance, however, phase locking of the meander pattern is predicted and observed.