Please use this identifier to cite or link to this item: https://doi.org/10.1021/nl102445x
Title: Large-diameter graphene nanotubes synthesized using Ni nanowire templates
Authors: Wang, R.
Hao, Y. 
Wang, Z.
Gong, H. 
Thong, J.T.L. 
Keywords: carbon nanotube
chemical vapor deposition
Graphene synthesis
nanowire template
Issue Date: 8-Dec-2010
Source: Wang, R., Hao, Y., Wang, Z., Gong, H., Thong, J.T.L. (2010-12-08). Large-diameter graphene nanotubes synthesized using Ni nanowire templates. Nano Letters 10 (12) : 4844-4850. ScholarBank@NUS Repository. https://doi.org/10.1021/nl102445x
Abstract: We report a method to synthesize tubular graphene structures by chemical vapor deposition (CVD) on Ni nanowire templates, using ethylene as a precursor at growth temperature of around 750 °C. Unlike carbon nanotubes that are synthesized via conventional routes, the number of graphene layers is determined by the growth time and is independent of the tube diameter and tube length, which follow those of the nanowire template. This allows us to realize large-diameter tubes with shells comprising a few or many layers of graphene as desired. Thin graphene layers are observed to be highly crystalline, and of uniform thickness throughout the length of the nanowire. Raman analysis shows the presence of a small level of defects typical of CVD-grown graphene. The metallic core could be removed by chemical etching to result in a collapsed tube. Backgated field-effect transistor measurements were conducted on the collapsed graphene tube. This approach to the realization of tubular graphene offers new opportunities for graphene-based nanodevices. © 2010 American Chemical Society.
Source Title: Nano Letters
URI: http://scholarbank.nus.edu.sg/handle/10635/50965
ISSN: 15306984
DOI: 10.1021/nl102445x
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