Single-Walled Carbon Nanotubes as Shadow Masks for Nanogap Fabrication

Details Single-Walled Carbon Nanotubes as Shadow Masks for Nanogap Fabrication Single-Walled Carbon Nanotubes as Shadow Masks for Nanogap Fabrication

2006-04-11

arxiv.org/abs/cond-mat/0604289v1

Appl. Phys. Lett. 88, 143124 (2006)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

10.1063/1.2192636

We describe a technique for fabricating nanometer-scale gaps in Pt wires on insulating substrates, using individual single-walled carbon nanotubes as shadow masks during metal deposition. More than 80% of the devices display current-voltage dependencies characteristic of direct electron tunneling. Fits to the current-voltage data yield gap widths in the 0.8-2.3 nm range for these devices, dimensions that are well suited for single-molecule transport measurements.

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