Electric-field-induced microstructural transformation of carbon nanotubes

被引：31
作者：
Bao, Qiaoliang
Zhang, Han
Pan, Chunxu [1 ]
机构：
[1] Wuhan Univ, Dept Phys, Wuhan 430072, Peoples R China
[2] Wuhan Univ, Key Lab Acoust & Photon Mat & Devices, Minist Educ, Wuhan 430072, Peoples R China
来源：
APPLIED PHYSICS LETTERS | 2006年 / 89卷 / 06期
关键词：
D O I：
10.1063/1.2227620
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
In the present work, microstructural transformation of carbon nanotubes (CNTs) from the "herringbone" into highly crystalline structure in an electric field was experimentally observed by using a high-resolution transmission electron microscope and the growth mechanism was modeled and discussed by using a finite element method. It is found that the CNT microstructures can be changed by an electric field through the influence of the electrostatic force on the carbon surface and bulk diffusion on/in a deformed catalyst particle. Preliminary experiment revealed that an isomeric "graphite-nongraphite-graphite-nongraphite center dot" CNTs could be synthesized when a pulsed electric field is applied, which are expected to exhibit special properties and promising applications. (c) 2006 American Institute of Physics.
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页数：3
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