Nanoelectrode Ensembles Using Carbon Nanopipettes

We demonstrate a simple approach for fabricating nanoelectrode ensembles (NEEs) for nanostructures exhibiting conical morphologies. The fabrication concept utilizes the tapered geometries of carbon nanopipettes (CNPs) and entails one simple, dip-coating step with an insulating polymer to engineer th...

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Bibliographic Details
Published in:Electrochemical and solid-state letters 2006-01, Vol.9 (6), p.H43-H47
Main Authors: Lowe, Randall D., Mani, Radhika C., Baldwin, Richard P., Sunkara, Mahendra K.
Format: Article
Language:English
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Summary:We demonstrate a simple approach for fabricating nanoelectrode ensembles (NEEs) for nanostructures exhibiting conical morphologies. The fabrication concept utilizes the tapered geometries of carbon nanopipettes (CNPs) and entails one simple, dip-coating step with an insulating polymer to engineer their spatial distribution. After dip-coating, the CNPs in the NEE are separated by several micrometers. Uncoated CNP arrays exhibit peak-shaped behavior in cyclic voltammetry, whereas polymer-coated NEEs yield steady-state, sigmoidal voltammograms over a wide range of scan rates. As-synthesized CNPs could also be employed as templates for synthesizing conical morphologies of other materials to be incorporated into NEEs.
ISSN:1099-0062
DOI:10.1149/1.2193071