Journal of Solid State Electrochemistry

, Volume 8, Issue 10, pp 683–692

Application of AC impedance techniques to Scanning Electrochemical Microscopy

Original Paper


Fundamental aspects of alternating current Scanning Electrochemical Microscopy (AC-SECM) have been studied. In particular, the flow of AC currents in the cell and simplified equivalent circuit diagrams are discussed. In the case of conductive substrates, the local (1st and 2nd order) impedance characteristic of the substrate is presented as a function of DC potential. 3-D imaging of mixed substrates (containing both conductive and non-conductive areas) was performed in the supporting electrolyte alone, without an added redox mediator.


Scanning electrochemical microscopy AC-SECM 2nd order impedance 2nd harmonic AC voltammetry 


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Copyright information

© Springer-Verlag 2004

Authors and Affiliations

  1. 1.Department of ChemistryUniversity of SaskatchewanSaskatoonCanada

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