Chirality-dependent growth rate of carbon nanotubes: A theoretical study

被引：31

作者：

Dumlich, Heiko ^{[1
]}

Reich, Stephanie ^{[1
]}

机构：

[1] Free Univ Berlin, Fachbereich Phys, D-14195 Berlin, Germany

来源：

PHYSICAL REVIEW B | 2010年 / 82卷 / 08期

基金：

欧洲研究理事会;

关键词：

NANOPARTICLES;

D O I：

10.1103/PhysRevB.82.085421

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We consider geometric constraints for the addition of carbon atoms to the rim of a growing nanotube. The growth of a tube proceeds through the conversion of dangling bonds from armchair to zigzag and vice versa. We find that the growth rate depends on the rim structure (chirality), the energy barriers for dangling-bond conversion, and the growth temperature. A calculated chirality distribution derived from this minimalistic theory shows surprisingly good agreement with experiment. Our ideas imply that the chirality distribution of carbon nanotubes can be influenced by external parameters.

引用

页数：5

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