AVS 52nd International Symposium
    Nanometer-Scale Science and Technology Tuesday Sessions
       Session NS-TuP

Paper NS-TuP12
Double-walled Carbon Nanotubes Grown on Co Tip Catalysts by Chemical Vapor Deposition

Tuesday, November 1, 2005, 4:00 pm, Room Exhibit Hall C&D

Session: Nanometer Scale Science and Technology Poster Session
Presenter: C.-M. Yeh, National Tsing Hua University, Taiwan, R. O. C.
Authors: C.-M. Yeh, National Tsing Hua University, Taiwan, R. O. C.
C.-J. Huang, National Tsing Hua University, Taiwan, R. O. C.
M.-Y. Chen, National Tsing Hua University, Taiwan, R. O. C.
J.C. Hwang, National Tsing Hua University, Taiwan, R. O. C.
Correspondent: Click to Email
A cobalt tip structure has been used as the catalysts for the grown of double-walled carbon naotubes (DWCNTs) by catalytic chemical vapor deposition at 900~1000°C. The cobalt tip catalysts were fabricated by a pre-deposition of a cobalt thin layer of 0.5~10 nm on Si(100) and a sequential microwave plasma treatment at 450°C. The outer and inner tube diameters of the DWCNTs are in the range of 3~4 and 2~3 nm, respectively, determined by transmission electron microscopy. The density of DWCNTs can be enhanced by the Co tip catalysts, which structure is superior to ball-like Co islands for the growth of CNTs.