Nanometer-spaced platinum electrodes with calibrated separation

Details Nanometer-spaced platinum electrodes with calibrated separation Nanometer-spaced platinum electrodes with calibrated separation

2004-11-17

arxiv.org/abs/cond-mat/0411446v1

Applied Physics Letters, volume 80, page 321 (2002)

Physics

Condensed Matter

Materials Science

4 pages, 4 figures

Scientific paper

10.1063/1.1433914

We have fabricated pairs of platinum electrodes with separation between 20 and 3.5 nm. Our technique combines electron beam lithography and chemical electrodeposition. We show that the measurement of the conductance between the two electrodes through the electrolyte provides an accurate and reproducible way to control their separation. We have tested the robustness of the electrodes by applying large voltages across them and by using them to measure the transport properties of Au nano-clusters. Our results show that the technique reliably produces metallic electrodes with a separation that bridges the minimum scale accessible by electron beam lithography with the atomic scale.

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