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

Li Tao; Gang Wang; Fang Yu; Lianfeng Sun

doi:10.1007/s11434-014-0340-4

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

Li Tao, Gang Wang, Fang Yu, Lianfeng Sun^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	2318-2323
Number of pages	6
Journal	Chinese Science Bulletin
Volume	59
Issue number	19
DOIs	https://doi.org/10.1007/s11434-014-0340-4
Publication status	Published - May 2014
Externally published	Yes

Keywords

Energy dissipation
Floating catalyst chemical vapor deposition
Metal substrate
Single-walled carbon nanotube

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10.1007/s11434-014-0340-4

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title = "Different effects of substrates on the morphologies of single-walled carbon nanotubes",

abstract = "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.",

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AU - Tao, Li

AU - Wang, Gang

AU - Yu, Fang

AU - Sun, Lianfeng

PY - 2014/5

Y1 - 2014/5

N2 - 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.

AB - 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.

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KW - Floating catalyst chemical vapor deposition

KW - Metal substrate

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

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Keywords

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