Evidence of Correlation between Catalyst Particles and the Single-Wall Carbon Nanotube Diameter: A First Step towards Chirality Control

被引：127

作者：

Fiawoo, M. -F. C. ^{[1
,2
]}

Bonnot, A. -M. ^{[3
]}

Amara, H. ^{[1
]}

Bichara, C. ^{[4
,5
]}

Thibault-Penisson, J. ^{[6
,7
]}

Loiseau, A. ^{[1
]}

机构：

[1] ONERA CNRS, Lab Etud Microstruct, F-92322 Chatillon, France

[2] Monash Univ, Dept Mat Engn, Clayton, Vic 3168, Australia

[3] CNRS UJF, Inst Louis Neel, F-38042 Grenoble 9, France

[4] CNRS, Ctr Interdisciplinaire Nanosci Marseille, F-13288 Marseille 09, France

[5] Aix Marseille Univ, F-13288 Marseille 09, France

[6] CNRS, Inst Mat Microelect Nanosci Provence, F-13397 Marseille 20, France

[7] Aix Marseille Univ, F-13397 Marseille 20, France

来源：

PHYSICAL REVIEW LETTERS | 2012年 / 108卷 / 19期

关键词：

CHEMICAL-VAPOR-DEPOSITION; GROWTH; NANOPARTICLES; SPECTROSCOPY; NUCLEATION; PRESSURE; SCALE;

D O I：

10.1103/PhysRevLett.108.195503

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Controlling the structure of single-wall carbon nanotubes during their synthesis by chemical vapor deposition remains a challenging issue. Here, using a specific synthesis protocol and ex situ transmission electron microscopy, we perform a statistical analysis of the structure of the tubes and of the catalyst particles from which they grow. We discriminate two nucleation modes, corresponding to different nanotube-particle junctions, that occur independently of the particle size. With the support of tight binding calculations, we show that a direct control of the nanotube diameter by the particle can only be achieved under growth conditions close to thermodynamic equilibrium.

引用

页数：5

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