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Dynamic Observation of the Thinnest Gold Nano-Bridge by Newly Developed UHVTEM

Published online by Cambridge University Press:  02 July 2020

Yukihito kondo  and
Kunio Takayanagi
Yukihito kondo
Affiliation:
Takayangi Particle Surface Project, ERATO, Japan Science and Technology Corporation, 3-1-2, Musashino, Akishima-shiTokyo, 196, Japan
Kunio Takayanagi
Affiliation:
Takayangi Particle Surface Project, ERATO, Japan Science and Technology Corporation, 3-1-2, Musashino, Akishima-shiTokyo, 196, Japan Department of Material Science and Engineering, Tokyo Institute of Technology, 4259, Nagatsuta, Midori-ku, Yokohama, Kanagawa, 226, Japan
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Extract

The nano-structure science have become popular as the nano-fabrication technology has progress recently. Among the nano-structures, the nano-wires have been attracted attention because they show quantized conductance which would be used in quantum devices[l]. The quantized conductance has been observed even at room temperature with the nano-wires prepared by tip-indentation in scanning tunneling microscope [2-4]. However, the direct observation of the nano-wires has not been examined because of lack of their stability and difficulty of specimen preparation.

We have generated a gold thin wire with the thickness ranged 0.8-2 nm, referred to as a nano bridge (NB)[5], in an ultrahigh vacuum transmission electron microscope (UHVTEM) [6]. The NB is stable at room temperature and shows good reproducibility. The shape of NB is surprisingly uniform (see Fig. 2). The structure is stabilized by stable hexagonally-closed-pack (hcp) planes for the NB of 2 nm in thickness [5]. The well-defined structure provide a good opportunities for applied and theoretical studies.

Type
Nanocrystals and Nanocomposites: Novel Structures For Catalysis, Electronics, and Micromechanics
Information
Microscopy and Microanalysis , Volume 3 , Issue S2: Proceedings: Microscopy & Microanalysis '97, Microscopy Society of America 55th Annual Meeting, Microbeam Analysis Society 31st Annual Meeting, Histochemical Society 48th Annual Meeting, Cleveland, Ohio, August 10-14, 1997 , August 1997 , pp. 417 - 418
Copyright
Copyright © Microscopy Society of America 1997

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References

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