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Phys. Rev. Lett. 90, 187401 (2003) [4 pages]

Carbon Nanowire Made of a Long Linear Carbon Chain Inserted Inside a Multiwalled Carbon Nanotube

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Xinluo Zhao1, Yoshinori Ando1,*, Yi Liu2,†, Makoto Jinno1, and Tomoko Suzuki1
1Department of Materials Science and Engineering, Meijo University, Nagoya 468-8502, Japan
2Department of Materials Science and Engineering, Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan

Received 5 November 2002; published 6 May 2003

A new type of one-dimensional (1D) carbon structure, carbon nanowires (CNWs), was discovered in the cathode deposits prepared by hydrogen arc discharge evaporation of carbon rods. Observation of high-resolution transmission electron microscopy (HRTEM) indicates that a CNW consists of a multiwalled carbon nanotube (MWNT) with a long 1D linear carbon chain (C chain) inserted into its innermost tube of 0.7 nm in diameter. The characteristic Raman peaks of CNWs appeared at around 1850  cm-1. Raman scattering and HRTEM studies show the formation of a long linear C chain involving more than 100 carbon atoms inside a MWNT. This novel 1D carbon allotrope has potential applications in nanoelectronics, nanomechanics, and nanomaterials.

© 2003 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.90.187401
DOI:
10.1103/PhysRevLett.90.187401
PACS:
78.30.Na, 61.46.+w, 81.07.Vb

*To whom correspondence should be addressed.

Electronic address: yando@ccmfs.meijo-u.ac.jp

†Current address: Institut für Festkörperforschung, Forschungszentrum Jülich, D-52425 Jülich, Germany.

 
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