Conical recessed gold microelectrode arrays produced during photolithographic methods: Characterisation and causes

Aguiar, F. A., Gallant, Andrew, Rosamond, M. C., Rhodes, A., Wood, David and Kataky, Ritu (2007) Conical recessed gold microelectrode arrays produced during photolithographic methods: Characterisation and causes. Electrochemistry Communications, 9 (5). pp. 879-885. ISSN 1388-2481

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Official URL: https://doi.org/10.1016/j.elecom.2006.11.023

Abstract

In this work, surface imaging techniques such as scanning Kelvin nanoprobe (SKN), scanning electron microscopy (SEM) and white light interferometer microscopy show that conical recessed electrodes with gradient potential along the recessed walls are formed during standard photolithographic methods for producing microelectrode arrays. The experimental behaviour of these electrode arrays fits very well with the numerical solution using optimal quasi-conformal mappings proposed recently by Amatore and co-workers [C. Amatore, A. Oleinick, I. Svir, J. Electroanal. Chem. 597 (2006) 69; C. Amatore, A. Oleinick, I. Svir, J. Electroanal. Chem. 597 (2006) 77]. The possible reasons for the formation of conical recesses are discussed.

Item Type: Article
Uncontrolled Keywords: Microelectrodes, Arrays, Scanning Kelvin nanoprobe, Scanning electron microscopy, Conical recessed
Subjects: F100 Chemistry
Department: Faculties > Engineering and Environment > Geography and Environmental Sciences
Depositing User: Becky Skoyles
Date Deposited: 17 Apr 2018 11:03
Last Modified: 17 Apr 2018 11:03
URI: http://nrl.northumbria.ac.uk/id/eprint/34008

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