Volume 14, Issue 50 1803471
Communication

Parallel Fabrication of Self-Assembled Nanogaps for Molecular Electronic Devices

Johnas Eklöf-Österberg

Corresponding Author

Johnas Eklöf-Österberg

Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Gothenburg, 412 96 Sweden

E-mail: [email protected], [email protected]Search for more papers by this author
Tina Gschneidtner

Tina Gschneidtner

Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Gothenburg, 412 96 Sweden

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Behabitu Tebikachew

Behabitu Tebikachew

Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Gothenburg, 412 96 Sweden

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Samuel Lara-Avila

Samuel Lara-Avila

Department of Microtechnology and Nanoscience, Chalmers University of Technology, Gothenburg, 412 96 Sweden

National Physical Laboratory, Teddington, TW11 0LW UK

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Kasper Moth-Poulsen

Corresponding Author

Kasper Moth-Poulsen

Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Gothenburg, 412 96 Sweden

E-mail: [email protected], [email protected]Search for more papers by this author
First published: 25 October 2018
Citations: 9

Abstract

Single molecule electronics might be a way to add additional function to nanoscale devices and continue miniaturization beyond current state of the art. Here, a combined top-down and bottom-up strategy is employed to assemble single molecules onto prefabricated electrodes. Protodevices, which are self-assembled nanogaps composed by two gold nanoparticles linked by a single or a few molecules, are guided onto top-down prefabricated nanosized nickel electrodes with sandwiched palladium layers. It is shown that an optimized geometry of multilayered metallic (top-down) electrodes facilitates the assembly of (bottom-up) nanostructures by surface charge interactions. Moreover, such assembly process results in an electrode–nanoparticle interface free from linking molecules that enable electrical measurements to probe electron transport properties of the nanoparticle–molecule–nanoparticle protodevices.

Conflict of Interest

The authors declare no conflict of interest.

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