Nonlinear Iron Electrochemical Oscillator: Coupling and Photo Effects

Abstract

The constant potential oxidation of iron in aqueous sulfuric acid solution induces a self-sustained nonlinear oscillation of the current. Here, two independently controlled iron electrodes become synchronized to each other as the distance between the electrodes is reduced. The temporal pattern of the synchronization is a function of the potential difference between the electrodes. The oscillation frequency of the iron electrode can be changed by irradiation with visible light.