Threshold barrier of carbon nanotube growth

Qinghong Yuan; Hong Hu; Feng Ding

doi:10.1103/PhysRevLett.107.156101

Threshold barrier of carbon nanotube growth

Qinghong Yuan, Hong Hu, Feng Ding

The Hong Kong Polytechnic University

Research output: Journal article publication › Journal article › Academic research › peer-review

33 Citations (Scopus)

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 (∼2eV 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.

Original language	English
Article number	156101
Journal	Physical Review Letters
Volume	107
Issue number	15
DOIs	https://doi.org/10.1103/PhysRevLett.107.156101
Publication status	Published - 10 Jun 2011

ASJC Scopus subject areas

General Physics and Astronomy

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10.1103/PhysRevLett.107.156101

http://hdl.handle.net/10397/4861

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Threshold barrier of carbon nanotube growth

Abstract

ASJC Scopus subject areas

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