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Different effects of substrates on the morphologies of single-walled carbon nanotubes
  • ISSN号：1001-6538
  • 期刊名称：Chinese Science Bulletin
  • 时间：2014.7
  • 页码：2318-2323
  • 分类：TB383[一般工业技术—材料科学与工程] TN41[电子电信—微电子学与固体电子学]
  • 作者机构：[1]National Center for Nanoscience and Technology,Beijing 100190, China, [2]University of Chinese Academy of Sciences, Beijing 100049,China
  • 相关基金：supported by the National Natural Science Foundation of China(10774032 and 90921001);Key Knowledge Innovation Project of the Chinese Academy of Sciences on Water Science Research and Instrument Developing Project of the Chinese Academy of Sciences(Y2010031)
  • 相关项目：石墨烯边缘结构的可控制备、特性及相关器件研究
作者： Tao, Li|Wang, Gang|Yu, Fang|Sun, Lianfeng|
关键词： 单壁碳纳米管, 催化化学气相沉积, 形态, 基板, 扫描电子显微镜, 拉曼光谱, 能量耗散, 图案化, Single-walled carbon nanotube , Floating catalyst chemical vapor deposition, Metalsubstrate , Energy dissipation
中文摘要：

在这个工作，围单人赛的碳 nanotubes (SWNT ) 的形态学上的底层的不同效果被学习。SWNT 被漂浮的催化化学蒸汽免职用 CH 生产 < 潜水艇 class= “ a-plus-plus ” > 是的 4 碳来源气体和 Ar 作为搬运人气体。然后， SWNT 在平版印刷术有图案的不同底层上被扔。在在 SiO 之间的边界的成长得当的 SWNT < 潜水艇 class= “ a-plus-plus ” > 2 和金属被扫描电子显微镜学，原子力量光谱学和拉曼光谱学描绘。在低传导性的底层趋势上扔了弯了形态学，被发现那 SWNT，他们中的一些形成戒指，当在金属底层上扔的 SWNT 仍然保持直、面向时。这些效果的机制也与热传导性和精力驱散的原则有关仔细被讨论，它是。

英文摘要：

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 sub- strates 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.

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