GROWTH OF CARBON NANOTUBES

被引:205
作者
IIJIMA, S
机构
[1] R and D Group, NEC Corporation, Tsukuba, Ibaraki, 305
来源
MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY | 1993年 / 19卷 / 1-2期
关键词
D O I
10.1016/0921-5107(93)90184-O
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The production, morphologies and atomic structures of carbon nanotubes are reviewed, and a mechanism for tube growth is discussed on the basis of transmission electron microscopy observations. Capping of carbon nanotubes is explained nicely in terms of pentagons; distributions of pentagons in a hexagon network cause various cap morphologies. Heptagons, resulting in negative curvature into a graphitic plane, also provide a variety of graphitic structures. Pentagons and heptagons seem to play a key role in tube growth. On the basis of the consistency of various tube morphologies, we propose a model for tubule growth, in which the tubules are open at their ends while growing in the carbon arc plasma. To support this open-end growth mechanism, other evidence such as layer-by-layer growth on the tube surfaces and ''over-shooting growth'' on tube tips is given.
引用
收藏
页码:172 / 180
页数:9
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