Different effects of substrates on the morphologies of single-walled carbon nanotubes

被引：2

作者：

Tao, Li ^{[1
,2
]}

Wang, Gang ^{[1
,2
]}

Yu, Fang ^{[1
]}

Sun, Lianfeng ^{[1
]}

机构：

[1] Natl Ctr Nanosci & Technol, Beijing 100049, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

来源：

CHINESE SCIENCE BULLETIN | 2014年 / 59卷 / 19期

基金：

中国国家自然科学基金;

关键词：

Single-walled carbon nanotube; Floating catalyst chemical vapor deposition; Metal substrate; Energy dissipation; LARGE-SCALE; RAMAN-SPECTROSCOPY; GROWTH; TRANSPORT;

D O I：

10.1007/s11434-014-0340-4

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

In this work, different effects of substrates on the morphologies of single-walled carbon nanotubes (SWNTs) are studied. SWNTs were produced by floating catalytic chemical vapor deposition using CH4 as carbon source gas and Ar as carrier gas. Then the SWNTs were deposited on lithography-patterned different substrates. The as-grown SWNTs at the boundaries between SiO2 and metal were characterized by scanning electron microscopy, atomic force spectroscopy and Raman spectroscopy. It is found that SWNTs deposited on low-conductivity substrates trend to have curved morphologies and some of them form rings, while SWNTs deposited on metal substrates remain straight and orientated. The mechanism of these effects was also discussed, which is closely related to the thermal conductivities and the principle of energy dissipation.

引用

页码：2318 / 2323

页数：6

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