We study the spatiotemporal dynamics of the oscillatory photoelectrodissolution of $n$-type Si in a fluoride-containing electrolyte under anodic potentials using in situ ellipsometric imaging. When lowering the illumination intensity stepwise, we successively observe uniform oscillations, modulated amplitude clusters, and the coexistence of multifrequency clusters, i.e., regions with different frequencies, with a stationary domain. We argue that the multifrequency clusters emerge due to an adaptive, nonlinear, and nonlocal coupling, similar to those found in the context of neural dynamics.

中文翻译：

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具有强非线性耦合的振荡电化学系统中的自组织多频簇

我们研究了振荡光电溶解的时空动力学 $ñ$使用原位椭偏成像在阳极电势下的含氟电解质中制备S型Si 。当逐步降低照明强度时，我们连续观察到均匀振荡，调制振幅簇以及多频簇（即具有不同频率的区域和固定域）的共存。我们认为，多频率簇是由于自适应，非线性和非局部耦合而出现的，类似于在神经动力学中发现的那些。