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Title: Threshold barrier of carbon nanotube growth
Authors: Yuan, Qinghong
Hu, Hong
Ding, Feng
Subjects: Carbon nanotubes
Issue Date: 7-Oct-2011
Publisher: American Physical Society
Source: Physical review letters, 7 Oct. 2011, v. 107, no. 15, 156101, p. 1-5.
Abstract: A previously overlooked step of carbon nanotube (CNT) growth, incorporating C atoms into the CNT wall through the CNT-catalyst interface, is studied by density functional theory calculations. A significant barrier for incorporating C atoms into the CNT wall (∼2  eV for most used catalysts, Fe, Co, and Ni) is revealed and the incorporation can be the threshold step of CNT growth in most experiments. In addition, the temperature dependent CNT growth rate is calculated and our calculation demonstrates that growing 0.1–1 m long CNTs in 1 h is theoretically possible.
Rights: Physical Review Letters © 2011 The American Physical Society. The Journal's web site is located at
Type: Journal/Magazine Article
DOI: 10.1103/PhysRevLett.107.156101
ISSN: 0031-9007 (print)
1079-7114 (online)
Appears in Collections:ITC Journal/Magazine Articles

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