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Impedance spectra analysis to characterize interdigitated electrodes as electrochemical sensors

Lookup NU author(s): Dr Sunilkumar Rana, Dr Robin Page, Emeritus Professor Calum McNeilORCiD

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Abstract

Interdigitated electrode (IDE) arrays have been used widely for electrochemical impedance spectroscopy (EIS). Here, we present an in-depth analysis of interdigitated electrode impedance spectra. Such an analysis is necessary for the identification of the contribution of each interdigitated electrode circuit element to the impedance change. We also discuss the importance of the solution conductivity in impedance spectroscopy showing that the use of low conductivity solutions is advantageous when inter-digit solution resistance and geometric capacitance need to be monitored.

Publication metadata

Author(s): Rana S, Page RH, McNeil CJ

Publication type: Article

Publication status: Published

Journal: Electrochimica Acta

Year: 2011

Volume: 56

Issue: 24

Pages: 8559-8563

Print publication date: 23/07/2011

ISSN (print): 0013-4686

ISSN (electronic): 1873-3859

Publisher: Pergamon

URL: http://dx.doi.org/10.1016/j.electacta.2011.07.055

DOI: 10.1016/j.electacta.2011.07.055

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