Individual single-walled carbon nanotubes as nanoelectrodes for electrochemistry

Iddo Heller, Jing Kong, Hendrik A. Heering, Keith A. Williams, Serge G. Lemay, Cees Dekker*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

233 Citations (Scopus)

Abstract

We demonstrate the use of individual single-walled carbon nanotubes (SWNTs) as nanoelectrodes for electrochemistry. SWNTs were contacted by nanolithography, and cyclic voltammetry was performed in aqueous solutions. Interestingly, metallic and semiconducting SWNTs yielded similar steady-state voltammetric curves. We clarify this behavior through a model that considers the electronic structure of the SWNTs. Interfacial electron transfer to the SWNTs is observed to be very fast but can nonetheless be resolved due to the nanometer critical dimension of SWNTs. These studies demonstrate the potential of using a SWNT as a model carbon nanoelectrode for electrochemistry.

Original languageEnglish
Pages (from-to)137-142
Number of pages6
JournalNano letters
Volume5
Issue number1
DOIs
Publication statusPublished - Jan 2005
Externally publishedYes

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