Effect of particle density on the aligned growth of carbon nanotubes

Sheng-gao Wang; Jian-hua Wang; Jian-jun Han

doi:10.1007/BF03000155

Journal of Wuhan University of Technology Materials Science Edition ›› 2004, Vol. 19 ›› Issue (2) : 4 -6. DOI: 10.1007/BF03000155

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Effect of particle density on the aligned growth of carbon nanotubes

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Abstract

Aligned carbon nanotubes (CNTs) were prepared on Nicoated Ni substrate by microwave plasma chemical vapor deposition (MWPCVD) with a mixture of methane and hydrogen gases at temperature of 550°C. The experimental results show a direct correlation between the alignment of CNTs and the density of the catalyst particles at low temperature. When the particle density is high enough, among CNTs there are strong interactions that can inhibit CNTs from growing randomly. The crowding effect among dense CNTs results in the aligned growth of CNTs at low temperature.

Keywords

aligned carbon nanotubes / high particle density / microwave plasma chemical vapor deposition

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Sheng-gao Wang, Jian-hua Wang, Jian-jun Han. Effect of particle density on the aligned growth of carbon nanotubes. Journal of Wuhan University of Technology Materials Science Edition, 2004, 19(2): 4-6 DOI:10.1007/BF03000155

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