Increasing the length of single-wall carbon nanotubes in a magnetically enhanced arc discharge

被引：125
|
作者：
Keidar, Michael [1 ]
Levchenko, Igor [2 ]
Arbel, Tamir [3 ]
Alexander, Myriam [4 ]
Waas, Anthony M. [5 ]
Ostrikov, Kostya [2 ]
机构：
[1] George Washington Univ, Dept Mech & Aerosp Engn, Washington, DC 20052 USA
[2] Univ Sydney, Sch Phys, Sydney, NSW 2006, Australia
[3] Univ Michigan, Dept Mat Sci, Ann Arbor, MI 48109 USA
[4] Univ Chicago, Dept Geophys Sci, Chicago, IL 60637 USA
[5] Univ Michigan, Dept Aerosp Engn, Ann Arbor, MI 48109 USA
来源：
APPLIED PHYSICS LETTERS | 2008年 / 92卷 / 04期
基金：
澳大利亚研究理事会;
关键词：
D O I：
10.1063/1.2839609
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
It is demonstrated that a magnetic field has a profound effect on the length of a single-wall carbon nanotube (SWCNT) synthesized in the arc discharge. The average length of SWCNT increases by a factor of 2 in discharge with magnetic field as compared with the discharge without magnetic field, and the yield of long nanotubes with lengths above 5 mu m also increases. A model of SWCNT growth on metal catalyst in arc plasma was developed. Monte-Carlo simulations confirm that the increase of the plasma density in the magnetic field leads to an increase in the nanotube growth rate and thus leads to longer nanotubes. (C) 2008 American Institute of Physics.
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页数：3
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