Lithographically fabricated nanopore-based electrodes for electrochemistry.
We report a new technique for fabricating electrodes for electrochemical applications with lateral dimensions in the range 15-200 nm and a reproducible, well-defined geometry. This technique allows determining the electrode size by electron microscopy prior to electrochemical measurements and without contamination of the metal electrode. We measured the diffusion-limited current with stepped-current voltammetry and showed that its dependence on electrode size can be quantitatively understood if the known geometry of the electrodes is explicitly taken into account.
Lemay
Serge G
SG
Kavli Institute of Nanoscience, Delft University of Technology, Lorentzweg 1, 2628 CJ Delft, The Netherlands. lemay@mb.tn.tudelft.nl
van den Broek
Dennis M
DM
Storm
Arnold J
AJ
Krapf
Diego
D
Smeets
Ralph M M
RM
Heering
Hendrik A
HA
Dekker
Cees
C