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Characterization of Ceramic-Based Dual Ultramicroelectrodes by Microscopic and Electrochemical Methods

Published online by Cambridge University Press:  02 July 2020

F M. Bums ,
D. M. Giolando  and
J. R. Kirchhoff
F M. Bums
Affiliation:
Department of Chemistry, The University of Toledo, Toledo, OH, 43606
D. M. Giolando
Affiliation:
Department of Chemistry, The University of Toledo, Toledo, OH, 43606
J. R. Kirchhoff
Affiliation:
Department of Chemistry, The University of Toledo, Toledo, OH, 43606
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Extract

Recent trends directed toward the miniaturization of electrodes have produced ultramicroelectrode (UME) devices. Interest in UMEs is due to the considerable improvement in the quality of the electrochemical information that is obtained as the dimensions of the electroactive surface decreases. UMEs exhibit increased sensitivity to analytes, decreased response time, and enhanced single-to-noise. In addition, solution resistance has a decreased influence on the signal. Finally, the reduced size of UMEs allows electroanalysis in small sampling environments. As a result, UMEs have been used in applications for intracellular electroanalysis, as detectors in capillary separation methods and gas chromatography, and as electrochemical probes in scanning electrochemical microscopy.

While UMEs have been investigated since the early 1980s, single probe dual UMEs are a recent development. Dual UMEs have two independent UMEs in close proximity, which allows much flexibility in the design of electrochemical-based sensor devices.

Type
Low Voltage SEM Imaging and Analysis for the Biological and Materials Sciences
Information
Microscopy and Microanalysis , Volume 3 , Issue S2: Proceedings: Microscopy & Microanalysis '97, Microscopy Society of America 55th Annual Meeting, Microbeam Analysis Society 31st Annual Meeting, Histochemical Society 48th Annual Meeting, Cleveland, Ohio, August 10-14, 1997 , August 1997 , pp. 1245 - 1246
Copyright
Copyright © Microscopy Society of America 1997

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6 The authors gratefully acknowledge the financial support of the Ohio Board of Reagents and The University of Toledo.Google Scholar