Understanding the nucleation mechanisms of carbon nanotubes in catalytic chemical vapor deposition

被引：143

作者：

Amara, H. ^{[1
,2
]}

Bichara, C. ^{[3
]}

Ducastelle, F. ^{[4
]}

机构：

[1] Fac Univ Notre Dame Paix, Lab Phys Solide, B-5000 Namur, Belgium

[2] Catholic Univ Louvain, PCPM, B-1348 Louvain, Belgium

[3] CRMCN CNRS, Ctr Rech Mat Condensee & Nanosci, F-13288 Marseille, France

[4] ONERA CNRS, Lab Etudes Microstruct, F-92322 Chatillon, France

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 100卷 / 05期

关键词：

D O I：

10.1103/PhysRevLett.100.056105

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The nucleation of carbon caps on small nickel clusters is studied using a tight binding model coupled to grand canonical Monte Carlo simulations. It takes place in a well defined carbon chemical potential range, when a critical concentration of surface carbon atoms is reached. The solubility of carbon in the outermost Ni layers, that depends on the initial, crystalline or disordered, state of the catalyst and on the thermodynamic conditions, is therefore a key quantity to control the nucleation.

引用

页数：4

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