Stochastic Resonance Under Modulation in a Model ofElectrooxidation of Formic Acid

Abstract

Abstract: Stochastic resonance(SR) is modulated in a model of electrochemical oxidation formic acid onPt.The driving current and the saturation coverage for carbon monooxide are two control parameters inthe model.When the driving current is perturbed by a period signal and noise, oscillations induced by noiseare observed near Hopf bifurcation point.The interspike distributions being the most order with the incre-ment of noise intensity indicates the occurrence of SR.The signal in the saturation coverage for carbonmonooxide may modulate the stochastic resonance.The initial phases and periods of the modulation signaldetermine the results of modulation.

Key words: Stochastic resonance, Modulation, Signal, Noise

CLC Number:

O641.12

TrendMD:

PI Zong-Xin, XIN Hou-Wen. Stochastic Resonance Under Modulation in a Model ofElectrooxidation of Formic Acid[J]. Chem. J. Chinese Universities, 2002, 23(4): 674.

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Stochastic Resonance Under Modulation in a Model ofElectrooxidation of Formic Acid

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