CUED Publications database

Diameter and wall number control of carbon nanotubes by chemical vapor deposition

Xie, R and Zhong, G and Zhang, C and Chen, B and Esconjauregui, CS and Robertson, J (2013) Diameter and wall number control of carbon nanotubes by chemical vapor deposition. Journal of Applied Physics, 114. ISSN 0021-8979

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Abstract

We analyze the relationship between the average wall number (N) and the diameter (d) for carbon nanotubes (CNTs) grown by chemical vapour deposition. It is found that N depends linearly on d for diameters in the range of 2.5-10 nm, while single wall nanotubes predominate for diameters under about 2.1 nm. The linear relationship is found to depend somewhat on the growth conditions. It is also verified that the mean diameter depends on the diameter of the originating catalyst nanoparticle, and thus on the initial catalyst thickness where a thin film catalyst is used. This simplifies the characterisation of CNTs by electron microscopy. We also find a linear relationship between nanotube diameter and initial catalyst film thickness. © 2013 AIP Publishing LLC.

Item Type: Article
Subjects: UNSPECIFIED
Divisions: Div B > Electronic Devices & Materials
Div B > Solid State Electronics and Nanoscale Science
Depositing User: Cron Job
Date Deposited: 17 Jul 2017 19:12
Last Modified: 23 Nov 2017 04:00
DOI: