L M Cao et al 2003 Nanotechnology 14 931 doi:10.1088/0957-4484/14/8/316
L M Cao1,4, X Y Zhang2, C X Gao1, W K Wang1,2, Z L Zhang3 and Z Zhang3
Show affiliationsLarge arrays of aligned CNx nanotubes were synthesized by radiofrequency magnetron sputtering of a mixture of nanometre-sized graphite and nickel powders in a nitrogen atmosphere. The CNx nanotubes produced assembled into bundle-like arrays standing perpendicularly on the silicon substrates. The nickel nanoparticles located in the tips suggest that a 'tip-growth' mechanism governs their growth process. Transmission electron microscopy and electron energy-loss spectroscopy studies reveal that the nanotubes possess a bamboo-like structure and nitrogen to carbon atomic ratios in the range of 0.22–0.32, commensurate with C3Nx (x < 1) stoichiometries. Our results illustrate the potential of the magnetron sputtering method for the creation of a large number of ordered nanostructures.
61.46.-w Structure of nanoscale materials
Surfaces, interfaces and thin films
Issue 8 (August 2003)
Received 9 March 2003, in final form 9 June 2003
Published 2 July 2003
L M Cao et al 2003 Nanotechnology 14 931
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