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Issue 84, 2017
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Fabrication of sub-1 nm gap electrodes using metal-mask patterning and conductivity measurements of molecules in nanoscale spaces

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Abstract

We developed a procedure for fabricating sub-1 nm gap Au electrodes using a metal mask for electrode patterning. Self-aligned nanogap formation was achieved using an electromigration method during metal deposition. We also measured the electric conductivities of organic molecules using the new nanogap electrodes. Because the new procedure does not involve wet processing, the ranges of possible electrode and substrate materials for the nanogap electrodes are greatly expanded. Finally, we discussed the molecular orbital energies of bridging and nonbridging 1,4-benzenedithiol molecules between Au electrodes. The new procedure for the fabrication of nanogap electrodes is expected to be useful for measuring the electrical properties of various nanoscale materials.

Graphical abstract: Fabrication of sub-1 nm gap electrodes using metal-mask patterning and conductivity measurements of molecules in nanoscale spaces

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Publication details

The article was received on 02 Oct 2017, accepted on 15 Nov 2017 and first published on 21 Nov 2017


Article type: Paper
DOI: 10.1039/C7RA10873G
Citation: RSC Adv., 2017,7, 53503-53508
  • Open access: Creative Commons BY license
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    Fabrication of sub-1 nm gap electrodes using metal-mask patterning and conductivity measurements of molecules in nanoscale spaces

    Y. Naitoh, K. Albrecht, Q. Wei, K. Yamamoto, H. Shima and T. Ishida, RSC Adv., 2017, 7, 53503
    DOI: 10.1039/C7RA10873G

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