Analysis of the Growth Mechanism of Carbon Nanotubes by C₂ Ingestion

Eiji Ōsawa Department of Knowledge-Based Information Engineering, Toyohashi University of Technology, Tempaku-cho, Toyohashi, Aichiken, 441-8580, Japan

Mitsuho Yoshida Department of Knowledge-Based Information Engineering, Toyohashi University of Technology, Tempaku-cho, Toyohashi, Aichiken, 441-8580, Japan; Exploratory Chemical Research Lab., Sankyo Co. Ltd., 2-58 Hiromachi, 1-Chome, Shinagawa-ku, Tokyo, 140-8710, Japan

Hiroshi Ueno Department of Knowledge-Based Information Engineering, Toyohashi University of Technology, Tempaku-cho, Toyohashi, Aichiken, 441-8580, Japan; Quality Control Department, Fuji-Xerox Corp., 9A5 KSP R&D Business Park Building, 3-2-1 Sakato, Koutsu-ku, Kawasaki, 213-8508, Japan

Shin-Ichi Sage Department of Knowledge-Based Information Engineering, Toyohashi University of Technology, Tempaku-cho, Toyohashi, Aichiken, 441-8580, Japan

Emi Yoshida Department of Knowledge-Based Information Engineering, Toyohashi University of Technology, Tempaku-cho, Toyohashi, Aichiken, 441-8580, Japan

Abstract

Cap structures capable of sustaining infinite growth by ingestion of C₂ fragments to give a carbon nanotube were screened systematically. For this purpose a total of 23,296 IPR cap structures having characteristic tubule vectors of (5∼20, 0∼10) were generated by the use of net algorithm. Eighteen recurring patterns were found which involve 50 cap structures having tubule vectors (6∼11, 5).

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Analysis of the Growth Mechanism of Carbon Nanotubes by C₂ Ingestion