Observation of synchronized spatiotemporal reaction waves in coupled electrochemical oscillations of an NDR type
Observation of synchronized spatiotemporal reaction waves in coupled electrochemical oscillations of an NDR type
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DOI：
10.1016/j.elecom.2005.02.016
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发表时间：
2005-04
影响因子：
5.4
通讯作者：
Satoshi Fukushima;Shuji Nakanishi;Kazuhiro Fukami;Sho-ichiro Sakai;T. Nagai;T. Tada;Y. Nakato
中科院分区：
文献类型：
--
作者：
Satoshi Fukushima;Shuji Nakanishi;Kazuhiro Fukami;Sho-ichiro Sakai;T. Nagai;T. Tada;Y. Nakato
利用在铂（Pt）电极上h2o2还原过程中出现的NDR型电流振荡，研究了时空反应波的耦合。对于并排放置的两个pt环工作电极，振荡耦合产生各种同步波，如同相模式的空间均匀波（HW 's），反相模式的HW 's，以及与HW同步的驻波或行波，这取决于外加电位和参考电极的相对位置。这些结果可以用正局部耦合和负全局耦合效应的组合来解释。
The coupling of spatiotemporal reaction waves was investigated by the use of current oscillations of an NDR type, appearing in H2O2reduction on platinum (Pt) electrodes. For two Pt-ring working electrodes located side by side, the oscillatory coupling gave rise to various synchronized waves, such as spatially homogeneous waves (HW’s) in an in-phase mode, HW’s in an anti-phase mode, and a standing wave or a traveling wave synchronized with a HW, depending on the applied potential and the relative position of the reference electrode. The results are explained in terms of a combination of positive local coupling and negative global coupling effects.