1. Application of AC impedance techniques to Scanning Electrochemical Microscopy
- Author
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Piotr M. Diakowski and Andrzej S. Baranski
- Subjects
business.industry ,Supporting electrolyte ,Chemistry ,Analytical chemistry ,Substrate (electronics) ,Condensed Matter Physics ,Electrochemistry ,law.invention ,Scanning electrochemical microscopy ,law ,Optoelectronics ,Equivalent circuit ,General Materials Science ,Electrical and Electronic Engineering ,business ,Alternating current ,Electrical conductor ,Electrical impedance - Abstract
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.
- Published
- 2004
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