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Journal Articles ChemPhysChem Year : 2011

Alternating-current measurements in scanning electrochemical microscopy, part 1: principle and theory.

Abstract

The development of the scanning electrochemical microscope in ac mode is presented from both experimental and theoretical point of views. The experiments are performed with the ferri/ferrocyanide redox mediator as model system. Based on analysis of the frequency-dependent collection efficiency, diffusion between the probe and the substrate is investigated, and analysis of time constants allows evaluation of the size of the sensing area under investigation. The experimental results are in good agreement with numerical simulations.

Dates and versions

hal-00816597 , version 1 (22-04-2013)

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Dao Trinh, Michel Keddam, Xosé Ramon Novoa, Vincent Vivier. Alternating-current measurements in scanning electrochemical microscopy, part 1: principle and theory.. ChemPhysChem, 2011, 12 (11), pp.2169-76. ⟨10.1002/cphc.201001084⟩. ⟨hal-00816597⟩
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