Single-Walled Carbon Nanotubes as Shadow Masks for Nanogap Fabrication

E. P. De Poortere; L. M. Huang; M. Huang; S. J. Wind; S. O'Brien; J. Hone; H. L. Stormer

doi:10.1063/1.2192636

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Single-Walled Carbon Nanotubes as Shadow Masks for Nanogap Fabrication

E. P. De Poortere·L. M. Huang·M. Huang·S. J. Wind·S. O'Brien·J. Hone·H. L. Stormer

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Abstract

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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E. P. De Poortere, L. M. Huang, M. Huang, S. J. Wind, S. O'Brien, J. Hone, H. L. Stormer. 2006-04-11. Single-Walled Carbon Nanotubes as Shadow Masks for Nanogap Fabrication. https://doi.org/10.1063/1.2192636

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