Competition and cooperation between lattice-oriented growth and step-templated growth of aligned carbon nanotubes on sapphire

被引：57

作者：

Ago, Hiroki ^{[1
]}

Imamoto, Kenta

Ishigami, Naoki

Ohdo, Ryota

Ikeda, Ken-ichi

Tsuji, Masaharu

机构：

[1] Kyushu Univ, Inst Mat Chem & Engn, Kasuga, Fukuoka 8168580, Japan

[2] Kyushu Univ, Grad Sch Engn Sci, Kasuga, Fukuoka 8168580, Japan

来源：

APPLIED PHYSICS LETTERS | 2007年 / 90卷 / 12期

关键词：

D O I：

10.1063/1.2715031

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The authors study the growth mechanism of single-walled carbon nanotubes (SWNTs) horizontally aligned on A-plane single crystal sapphire (1120) by making the controlled step/terrace structure. SWNT growth direction was sensitive to the surface geometry of the sapphire, and there was competition between two growth modes, lattice-oriented growth and step-templated growth. On the substrate with single-atomic steps, SWNTs aligned parallel to the (1120) direction as dominated by the lattice-oriented growth mode, while SWNTs aligned along the step edges when the double-atomic or higher steps were formed. Our findings have potential for the fabrication of designed architecture of SWNTs by combining these two growth modes. (c) 2007 American Institute of Physics.

引用

页数：3

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