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Issue 21, 2013
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The effect of channel height and electrode aspect ratio on redox cycling at carbon interdigitated array nanoelectrodes confined in a microchannel

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Abstract

Redox cycling is a commonly used electrochemical sensing scheme for enhancing faradaic current signals. This effect can be improved by either optimizing electrode geometries or restricting electrochemical reactions within a limited volume. Here, we demonstrate a simple batch fabrication of 1 : 1 aspect ratio carbon interdigitated array nanoelectrodes integrated in a polydimethylsiloxane microchannel that enables current amplification by up to 1116 times. We also examine the factors that influence the effect of redox cycling, including the electrode aspect ratio and channel height, by using experiments and simulations.

Graphical abstract: The effect of channel height and electrode aspect ratio on redox cycling at carbon interdigitated array nanoelectrodes confined in a microchannel

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Publication details

The article was received on 03 maí 2013, accepted on 06 ágú. 2013 and first published on 08 ágú. 2013


Article type: Paper
DOI: 10.1039/C3AN00905J
Citation: Analyst, 2013,138, 6404-6411
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    The effect of channel height and electrode aspect ratio on redox cycling at carbon interdigitated array nanoelectrodes confined in a microchannel

    J. Heo, Y. Lim and H. Shin, Analyst, 2013, 138, 6404
    DOI: 10.1039/C3AN00905J

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