Premium
Structural characterization of randomly and vertically oriented carbon nanotube films grown by chemical vapour deposition
Author(s) -
Ikuno Takashi,
Furuta Hiroshi,
Yamamoto Tetsuro,
Takahashi Syunji,
Kamizono Motoki,
Honda Shinichi,
Katayama Mitsuhiro,
Hirao Takashi,
Oura Kenjiro
Publication year - 2003
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/sia.1485
Subject(s) - carbon nanotube , chemical vapor deposition , materials science , nanotube , nanotechnology , chemical engineering , deposition (geology) , carbon fibers , field electron emission , carbon nanotube supported catalyst , optical properties of carbon nanotubes , characterization (materials science) , composite material , carbon nanofiber , composite number , biology , electron , paleontology , physics , quantum mechanics , sediment , engineering
We have investigated the structures of randomly and vertically oriented carbon nanotubes grown by thermal chemical vapour deposition and dual‐r.f.‐plasma‐enhanced chemical vapour deposition, respectively. The randomly oriented carbon nanotubes have a bamboo‐like structure, whereas the vertically oriented carbon nanotubes have a multi‐shell shape. Both types of nanotubes have a metal nanoparticle at the tip. The field emission property of the randomly oriented nanotube films was better than that of the vertically oriented nanotube films. This result indicates that more emission sites exist at the body than at the tip of the nanotubes. Copyright © 2003 John Wiley & Sons, Ltd.