Lookup NU author(s): Dr Sunilkumar Rana,
Dr Robin Page,
Professor Calum McNeil
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It has been reported that the introduction of a dielectric barrier between adjacent digits of an interdigitated electrode array can improve the sensitivity of the array as an electrochemical impedance biosensor. Here we present an in-depth analysis of the impedance in planar interdigitated electrodes and 3-D interdigitated electrodes (with dielectric barriers). The analysis indicates that the planar geometry not only provides lower impedance but also a higher change impedance as a result of molecular immobilization on the electrode array surface.
Author(s): Rana S, Page RH, McNeil CJ
Publication type: Article
Print publication date: 20/09/2011
ISSN (print): 1040-0397
ISSN (electronic): 1521-4109
Publisher: Wiley - V C H Verlag GmbH & Co. KGaA
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