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Atom-Bridge to Nano-Wire

Published online by Cambridge University Press:  02 July 2020

K. Takayanagi ,
Y. Kondo ,
H. Ohnishi ,
Q. Ru  and
H. Kimata
K. Takayanagi
Affiliation:
Takayanagi Particle Surface Project, ERATO, Japan Science and Technology Corporation, 3-1-2, Musashino, Akishima-shi, Tokyo196, Japan Department of Material Science and Engineering, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama, Kanagawa, 226, Japan
Y. Kondo
Affiliation:
Takayanagi Particle Surface Project, ERATO, Japan Science and Technology Corporation, 3-1-2, Musashino, Akishima-shi, Tokyo196, Japan
H. Ohnishi
Affiliation:
Takayanagi Particle Surface Project, ERATO, Japan Science and Technology Corporation, 3-1-2, Musashino, Akishima-shi, Tokyo196, Japan
Q. Ru
Affiliation:
Takayanagi Particle Surface Project, ERATO, Japan Science and Technology Corporation, 3-1-2, Musashino, Akishima-shi, Tokyo196, Japan
H. Kimata
Affiliation:
Department of Material Science and Engineering, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama, Kanagawa, 226, Japan
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Extract

Nano-fabrications are now available for us to produce well-defined nano-structures showing quantum effects, quantized electron conductance at point contact, of phase interference of electron waves at quantum wires, and single electron tunneling at nano-capacitors. It seems near that we can fabricate even such nano-structures that Professor L.Feynman had described in his book “miniaturization”: the smallest memory unit(nano-particle), which contains 5x5x5 atoms. Such nano-particles are expected to have physical and chemical properties depending on their surface nature, since they have rather large volume of surface atoms compared with that of the core atoms. The surface atoms of such nano-particles might be reconstructed to a structure different from their bulk crystal structure, as well the surfaces of silicon and GaAs are reconstructed. It is, therefore, interesting to fablicate such nano-particles and to study their structures.

To study structure and properties of nano-particle surfaces, we developed a UHV high-resolution electron microscope equipped with a field-emission gun (UHV-FE-HR TEM: revised version of JEOL 2000V) at our ERATO project, as shown in fig. 1.

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. 391 - 392
Copyright
Copyright © Microscopy Society of America 1997

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References

Naitoh, Y.. Takayangi, K.. and Tomitori, M.. Surface SciGoogle Scholar
Fabrizio, E.D.. Grella, L.. Gentili, M.. Baciocchi, M.. Jpn. J. Appl. Phys.. 36.L7O. 1997.10.1143/JJAP.36.7757CrossRefGoogle Scholar
Kondo, Y. and Takayanagi, K.. Phys. Rev. lett. submitted.Google Scholar