Fabrication of a Sub‐Micrometer Electrode Array: Electrochemical Characterization and Mapping of an Electroactive Species by Confocal Raman Microspectroscopy
Sabine Szunerits, Patrick Garrigue, Jean‐Luc Bruneel, Laurent Servant +1
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100% confidenceMES research in electrode, membrane. Abstract The fabrication of an ordered electrode array based on an e...
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Abstract
Abstract The fabrication of an ordered electrode array based on an etched optical fiber bundle is described. The high density sub‐micrometer electrode array is characterized electrochemically using cyclic voltammetry and geometrically via scanning electron microscopy. The observed steady‐state current indicates that individual diffusion layers do not overlap and that the electrodes are diffusively independent. Spatially resolved chemical information of the etched and insulating paint‐covered surface of the electrode array is obtained from confocal Raman microspectroscopy (CRM) experiments. Finally electroactive spots are probed using CRM through the different Raman spectra of the electroactive species of the redox couple Fe(CN) 6 3− /Fe(CN) 6 4− .
Keywords
Identifiers
- Journal
- Electroanalysis
- Year
- 2003