Scanning electrochemical microscopy: diffusion controlled approach curves for conical AFM-SECM tips


Leonhardt, Kelly, Avdic, Amra, Lugstein, Alois, Pobelov, Ilya, Wandlowski, Thomas, Gollas, Bernhard and Denuault, Guy (2013) Scanning electrochemical microscopy: diffusion controlled approach curves for conical AFM-SECM tips. Electrochemistry Communications, 27, 29-33. (doi:10.1016/j.elecom.2012.10.034).

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Description/Abstract

The diffusion controlled response of conical AFM-SECM probes is presented. Accurate expressions are given which describe the dependence of the probe current on the tip radius and aspect ratio, insulating sheath radius and tip–substrate distance for positive feedback and hindered diffusion. A procedure is proposed to determine the tip dimensions from the experimental approach curves.

Item Type: Article
ISSNs: 1388-2481 (print)
Related URLs:
Keywords: SECM AFM Conical electrode Approach curve Diffusion control
Subjects: Q Science > QD Chemistry
Divisions: Faculty of Natural and Environmental Sciences > Chemistry > Electrochemistry
ePrint ID: 345912
Date Deposited: 05 Dec 2012 15:34
Last Modified: 27 Mar 2014 20:27
URI: http://eprints.soton.ac.uk/id/eprint/345912

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