| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for effectively manufacturing multi-pipe (double-pipe, or the like) carbon nanotubes (CNTs) having a structure whereby interior tubes are formed within the CNTs. SOLUTION: In this manufacturing method, fullerene/CNT hybrid structures are prepared, wherein assembled fullerenes, these being fullerenes that are linked, have been housed within single-layer CNTs. The interior tubes are formed from the assembled fullerenes by subjecting the hybrid structures to electron beam irradiation while in a heated state. It is preferred that irradiation with the electron beams occurs at a temperature of 100 to 500°C and with the electron beams having an accelerating voltage of 80 to 250 kV. According to the manufacturing method of the present invention, multi-pipe CNTs with few defects can be manufactured at a lower temperature and in a shorter period than in the case where the fullerene/CNT hybrid structures are only maintained under high temperature conditions (and electron beam irradiation is not performed). COPYRIGHT: (C)2004,JPO
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