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Microelectrochemistry. From Materials to Biological Applications
Ruhr-Universität Bochum, Anal. Chem. - Elektroanalytik & Sensorik (ELAN), Universitätsstr. 150, Bochum 44780, Germany
Miniaturization and exact positioning of needle-type electrodes opens new ways for the visualization of chemical and biochemical activity on surfaces. In scanning electrochemical microscopy (SECM) a needle-type ultramicroelectrode is positioned in close proximity to a surface of interest, and the Faraday current caused by the redox conversion of a free-diffusing redox mediator is used to visualize with high lateral resolution the electrochemical activity. The tutorial lecture will present the basic considerations concerning SECM in constant-height and constant-distance scanning together with the different operation modes of SECM such as feedback mode, generator-collector mode.
Presentation: Tutorial lecture at SMCBS 2003 Workshop, by Wolfgang Schuhmann
See On-line Journal of SMCBS 2003 Workshop
Submitted: 2003-10-19 21:38 Revised: 2009-06-08 12:55