Open Access Nano Express

Nanogap structures for molecular nanoelectronics

Paolo Motto1*, Alice Dimonte2, Ismael Rattalino2, Danilo Demarchi1, Gianluca Piccinini1 and Pierluigi Civera1

Author affiliations

1 Department of Electronics, Corso Duca degli Abruzzi 24, 10129 Turin, Italy

2 Italian Institute of Technology, IIT@Polito Center, Corso Trento 21, Turin, Italy

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Citation and License

Nanoscale Research Letters 2012, 7:113  doi:10.1186/1556-276X-7-113

Published: 9 February 2012

Abstract

This study is focused on the realization of nanodevices for nano and molecular electronics, based on molecular interactions in a metal-molecule-metal (M-M-M) structure. In an M-M-M system, the electronic function is a property of the structure and can be characterized through I/V measurements. The contact between the metals and the molecule was obtained by gold nanogaps (with a dimension of less than 10 nm), produced with the electromigration technique. The nanogap fabrication was controlled by a custom hardware and the related software system. The studies were carried out through experiments and simulations of organic molecules, in particular oligothiophenes.