Proskurkin Ivan S, Smelov Pavel S, Vanag Vladimir K
Centre for Nonlinear Chemistry, Immanuel Kant Baltic Federal University, Kaliningrad, 236041, Russia.
Chemphyschem. 2019 Sep 3;20(17):2162-2165. doi: 10.1002/cphc.201900421. Epub 2019 Aug 5.
We present an experimental system of four identical microreactors (MRs) in which the photosensitive oscillatory Belousov-Zhabotinsky (BZ) reaction occurs. The inhibitory coupling of these BZ MRs is organized via pulses of light coming to each MR from a computer projector. These pulses are induced by spike(s) in other MR(s) of the same network. Time delay between the spike in one BZ MR and the pulsed perturbation of the other BZ MR(s), the amplitude of light pulses, their duration, and the connectivity of the MRs are controlled by the LabVIEW software. Recording the dynamics of the BZ reaction in the MRs via a microscope equipped with a CCD camera, we observe all the main dynamical modes of our network of MRs, which are the IP (in-phase), AP (anti-phase), W (walk), and WR (walk reverse) for the unidirectional coupling, and the IP, two-cluster, three-cluster, and splay modes for the all-to-all coupling. Our software detects all the modes of the network automatically and makes it possible to switch between them on demand using a few special "switching" pulses. As the result of the present work, the experimental implementation of the adaptive behaviour of the pulse-coupled chemical micro-oscillator networks becomes available.
我们展示了一个由四个相同微反应器（MRs）组成的实验系统，其中发生了光敏振荡的贝洛索夫 - 扎博廷斯基（BZ）反应。这些BZ微反应器的抑制性耦合是通过来自计算机投影仪的光脉冲来实现的，这些光脉冲由同一网络中其他微反应器的尖峰诱导产生。一个BZ微反应器中的尖峰与其他BZ微反应器的脉冲扰动之间的时间延迟、光脉冲的幅度、持续时间以及微反应器之间的连接性均由LabVIEW软件控制。通过配备电荷耦合器件（CCD）相机的显微镜记录微反应器中BZ反应的动力学过程，我们观察到了微反应器网络的所有主要动力学模式，对于单向耦合，这些模式包括同相（IP）、反相（AP）、行走（W）和反向行走（WR）；对于全对全耦合，这些模式包括IP、双簇、三簇和展开模式。我们的软件能自动检测网络的所有模式，并可通过一些特殊的“切换”脉冲按需在这些模式之间进行切换。作为本工作的成果，脉冲耦合化学微振荡器网络的自适应行为的实验实现成为可能。
