Diffusion-gradient-induced length instabilities in the catalytic growth of carbon nanotubes

A. Gamalski; E. S. Moore; Michael Treacy; R. Sharma; Peter Rez

doi:10.1063/1.3271521

Diffusion-gradient-induced length instabilities in the catalytic growth of carbon nanotubes

A. Gamalski, E. S. Moore, Michael Treacy, R. Sharma, Peter Rez

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

12 Scopus citations

Abstract

We report in situ transmission electron microscopy observations of length instabilities in the growth of straight-wall carbon nanotubes. The nanotubes are grown at: T<725 °C, P<80 mTorr by chemical vapor decomposition of acetylene on Fe nanoparticles formed in situ prior to tube growth. The growing nanotubes detach episodically from the catalyst particles, which then nucleate a fresh nanotube. Detachment is induced by the shedding of carbon-starved inner walls during diffusion-limited growth.

Original language	English (US)
Article number	233109
Journal	Applied Physics Letters
Volume	95
Issue number	23
DOIs	https://doi.org/10.1063/1.3271521
State	Published - 2009

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.3271521

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title = "Diffusion-gradient-induced length instabilities in the catalytic growth of carbon nanotubes",

abstract = "We report in situ transmission electron microscopy observations of length instabilities in the growth of straight-wall carbon nanotubes. The nanotubes are grown at: T<725 °C, P<80 mTorr by chemical vapor decomposition of acetylene on Fe nanoparticles formed in situ prior to tube growth. The growing nanotubes detach episodically from the catalyst particles, which then nucleate a fresh nanotube. Detachment is induced by the shedding of carbon-starved inner walls during diffusion-limited growth.",

author = "A. Gamalski and Moore, {E. S.} and Michael Treacy and R. Sharma and Peter Rez",

note = "Funding Information: Funding from the National Science Foundation (Grant No. NSF-CBET #0625340), and the use of facilities in the LeRoy Eyring Center for Solid State Science at Arizona State University are gratefully acknowledged. Copyright: Copyright 2010 Elsevier B.V., All rights reserved.",

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AU - Gamalski, A.

AU - Moore, E. S.

AU - Treacy, Michael

AU - Sharma, R.

AU - Rez, Peter

N1 - Funding Information: Funding from the National Science Foundation (Grant No. NSF-CBET #0625340), and the use of facilities in the LeRoy Eyring Center for Solid State Science at Arizona State University are gratefully acknowledged. Copyright: Copyright 2010 Elsevier B.V., All rights reserved.

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Y1 - 2009

N2 - We report in situ transmission electron microscopy observations of length instabilities in the growth of straight-wall carbon nanotubes. The nanotubes are grown at: T<725 °C, P<80 mTorr by chemical vapor decomposition of acetylene on Fe nanoparticles formed in situ prior to tube growth. The growing nanotubes detach episodically from the catalyst particles, which then nucleate a fresh nanotube. Detachment is induced by the shedding of carbon-starved inner walls during diffusion-limited growth.

AB - We report in situ transmission electron microscopy observations of length instabilities in the growth of straight-wall carbon nanotubes. The nanotubes are grown at: T<725 °C, P<80 mTorr by chemical vapor decomposition of acetylene on Fe nanoparticles formed in situ prior to tube growth. The growing nanotubes detach episodically from the catalyst particles, which then nucleate a fresh nanotube. Detachment is induced by the shedding of carbon-starved inner walls during diffusion-limited growth.

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Diffusion-gradient-induced length instabilities in the catalytic growth of carbon nanotubes

Abstract

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