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Control of Cobalt Catalyst Thin Film Thickness by Varying Spin Speed in Spin Coating towards Carbon Nanotube Growth

Zulkapli, Nor Najihah and Abd Manaf, Mohd Edeerozey and Ab Maulod, Hairul Effendy and Abdul Manaf, Nor Syafira and raja seman, raja noor amalina and Bistamam, Mohd Shahril Amin and Talib, Elyas and Mohd Abid, Mohd Asyadi Azam (2015) Control of Cobalt Catalyst Thin Film Thickness by Varying Spin Speed in Spin Coating towards Carbon Nanotube Growth. Applied Mechanics and Materials, 761. pp. 421-425. ISSN 1662-7482

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Abstract

Cobalt (Co) catalyst thin film is an active metal catalyst that can be very helpful to grow carbon nanotubes (CNTs). The catalyst thin films were prepared on silicon wafers by spin coating the solution of cobalt acetate tetrahydrate and ethanol. The effects of different spin speed parameter during the spin coating process were investigated. The findings showed that the optimum thickness of the Co catalyst thin films, i.e., 12.1 nm, was obtained at the highest spin speed of 8000 rpm. The uniformity of the thin films was also found to increase with increasing spin speed. The study also demonstrated that single-walled carbon nanotubes could be grown from Co catalyst particles after the catalytic chemical vapor deposition of ethanol. The particle and thickness analysis, as performed by means of FESEM while the existence of CNTs, was performed by Raman spectroscopy.

Item Type: Article
Subjects: T Technology > TJ Mechanical engineering and machinery
Divisions: Faculty of Manufacturing Engineering > Department of Engineering Materials
Depositing User: MOHD EDEEROZEY ABD MANAF
Date Deposited: 30 Nov 2016 23:59
Last Modified: 30 Nov 2016 23:59
URI: http://eprints.utem.edu.my/id/eprint/17765

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