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Growth of carbon nanotubes on Si substrate using Fe catalyst produced by pulsed laser deposition

Krishnamurthy, S.; Donnelly, T.; McEvoy, N.; Blau, W.; Lunney, J. G.; Teh, A. S.; Teo, K. B. K. T. and Milne, W. I. (2008). Growth of carbon nanotubes on Si substrate using Fe catalyst produced by pulsed laser deposition. Journal of Nanoscience and Nanotechnology, 8(11) pp. 5748–5752.

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We report the growth of carbon nanotubes on the size controlled iron catalytic nanoparticles. The nanotubes were grown by thermal chemical vapour deposition (CVD) in the temperature range 600-850 °C. The Fe films were deposited on silicon by pulsed laser deposition in vacuum. Atomic force microscopy measurements were performed on the catalytic nanoparticles. The topography of the catalytic nanoparticles shows the homogenous distribution of Fe catalyst. We observe the nanotubes are produced only at temperatures between 650 and 800 °C, and within this narrow temperature regime the yield of nanotubes reaches a maximum around 750 °C and then declines. Raman measurements illustrate a high G/D peak ratio indicating good nanotube quality. By further defining the size of the catalyst the diameter of these carbon nanotubes can be controlled.

Item Type: Journal Article
Copyright Holders: 2008 American Scientific Publishers
ISSN: 1533-4899
Keywords: nanoparticles; nanotubes; pulsed laser deposition
Academic Unit/Department: Mathematics, Computing and Technology > Engineering & Innovation
Mathematics, Computing and Technology
Item ID: 35391
Depositing User: Satheesh Krishnamurthy
Date Deposited: 16 Nov 2012 14:46
Last Modified: 18 Jan 2016 16:01
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