Electrochemical Turing patterns

FIGURE 8.1. Principle of the mechanism underlying the formation of electrochemical Turing patterns [5]. (See color insert.)... 

FIGURE 8.2. Some examples for the formation of electrochemical Turing patterns on a thin Au(l 11) film [12]. 

Mazouz N, Krischer K. 2000. A theoretical study on Turing patterns in electrochemical systems. J Phys Chem B 104 6081 6090. 

The theoretical predictions prompted an experimental search for electrochemical Turing structures that was successful shortly after. The first experimentally observed Turing structures are reproduced in Fig. 71. They stem from the periodate reduction on Au in the presence of camphor whose homogeneous dynamics was introduced in Section 3.2.2. The patterns could be made visible with surface plasmon microscopy (cf. Fig. 54). When changing the composition of the electrolyte, the wavelength of the patterns changed, in accordance with the theoretical result that the wavelength depends on the system s parameters, but not on the dimension of the... 

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