Nano Archive

Temperature and substrate dependence of structure and growth mechanism of carbon nanofiber

Chuang, Chia-Chih and Liu, Wei-Long and Chen, Wen-Jauh and Huang, Jin-Hua (2008) Temperature and substrate dependence of structure and growth mechanism of carbon nanofiber. APPLIED SURFACE SCIENCE, 254 (15). pp. 4681-4687.

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Abstract

The carbon nanofibers were grown on Ni/Si and Ni/Ti/Si substrates in 1 atm CH4 atmosphere at 640 degrees C and 700 degrees C by thermal chemical vapor deposition method. The carbon nanofibers were characterized by field emission scanning electron microscopy, transmission electron microscopy, and Raman spectrometry for morphology, microstructure, and crystallinity. The electron emission property of carbon nanofibers was also investigated by current-voltage (I-V) measurement. The results showed that the solid amorphous carbon nanofibers could be grown on Ni/Si substrate at 640 degrees C through tip growth mechanism, the carbon nanotubes could be grown on Ni/Si substrate at 700 degrees C through tip growth mechanism, and the carbon nanotubes could be grown on Ni/Ti/Si substrate at 700 degrees C through root growth mechanism. (C) 2008 Elsevier B.V. All rights reserved.

Item Type:Article
Uncontrolled Keywords:carbon nanofiber; carbon nanotube; amorphous; growth mechanism; thermal chemical vapor deposition
Subjects:Analytical Science > Microscopy and probe methods
Material Science > Nanofabrication processes and tools
Physical Science > Nano objects
ID Code:2414
Deposited By:Farnush Anwar
Deposited On:23 Dec 2008 13:51
Last Modified:09 Jan 2009 15:56

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