Title :
Multi-walled carbon nanotubes of 200 nm diameter and carbon micro-balloons
Author :
Truong, V. -T ; McMahon, P.J. ; Olsson-Jacques, C.L. ; Wilson, A.R. ; Mathys, G.I.
Author_Institution :
Maritime Platforms Div., Defence Sci. & Technol. Organ., Fishermans Bend, VIC, Australia
Abstract :
The growth of multi-walled carbon nanotubes (MWNTs) with a large diameter of 200 nm on nickel (Ni) coated silicon wafer at different growth times up to 30 min was investigated. CNT cobwebs were found after a short growth time (7 min) and developed into ordered forests at higher growth times (>; 10 min). One of the important formation features of the CNTs in this study was the coaxial structure of the nanotubes, ie. a MWNT within a MWNT. Its formation was due to secondary nanostructures of Ni particles. Unexpected growth of carbon micro-balloons occurred when high flow rates of carbon feedstock was used or when growth time exceeded 15 min.
Keywords :
carbon nanotubes; nanofabrication; C; Ni-Si; Si; carbon feedstock; carbon microballoons; coated silicon wafer; coaxial structure; multiwalled carbon nanotubes; size 200 nm; time 7 min; Carbon; Carbon nanotubes; Electron tubes; Films; Nickel; Silicon; carbon micro-balloons; carbon nanotubes; coaxial structures;
Conference_Titel :
Nanoscience and Nanotechnology (ICONN), 2010 International Conference on
Conference_Location :
Sydney, NSW
Print_ISBN :
978-1-4244-5261-3
Electronic_ISBN :
978-1-4244-5262-0
DOI :
10.1109/ICONN.2010.6045178
