Surface diffusion growth and stability mechanism of BN nanotubes produced by laser beam heating under superhigh pressures

A growth mechanism for BN nanotubes appearing at superhigh pressures under laser beam heating [D. Golberg, Y. Bando, M. Eremets, K. Takemura, K. Kurashima, and H. Yusa, Appl. Phys. Lett. 69, 2045 (1996)] is proposed based upon consideration of the dependence of the energy of adsorption and surface d...

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Bibliographic Details
Published in:Applied physics letters 1997-12, Vol.71 (24), p.3522-3524
Main Author: Louchev, Oleg A.
Format: Article
Language:English
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Summary:A growth mechanism for BN nanotubes appearing at superhigh pressures under laser beam heating [D. Golberg, Y. Bando, M. Eremets, K. Takemura, K. Kurashima, and H. Yusa, Appl. Phys. Lett. 69, 2045 (1996)] is proposed based upon consideration of the dependence of the energy of adsorption and surface diffusion on the surface curvature. According to this mechanism, the growth of BN nanotubes is due to surface diffusion along the external surface, which also ensures morphological stability of the open end during growth. It is suggested that the observed nanotube heights are limited by the corresponding diffusion length.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.120379