title: Individual single-walled carbon nanotubes as nanoelectrodes for electrochemistry.
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.
authors.affiliation: Kavli Institute of Nanoscience, Delft University of Technology, Lorentzweg 1, 2628 CJ Delft, The Netherlands.
authors.forename: Iddo
authors.initials: I
authors.lastname: Heller
authors.forename: Jing
authors.initials: J
authors.lastname: Kong
authors.forename: Hendrik A
authors.initials: HA
authors.lastname: Heering
authors.forename: Keith A
authors.initials: KA
authors.lastname: Williams
authors.forename: Serge G
authors.initials: SG
authors.lastname: Lemay
authors.forename: Cees
authors.initials: C
authors.lastname: Dekker