TY - JOUR
T1 - Growth of horizontally-aligned single-walled carbon nanotubes on sapphire surface by needle-scratching method
AU - Ago, Hiroki
AU - Kayo, Yasumichi
AU - Tsuji, Masaharu
PY - 2012/4/1
Y1 - 2012/4/1
N2 - We report the growth of single-walled carbon nanotubes (SWNTs) over metal nanoparticles which are formed by scratching sapphire surface with metal wires. The chemical vapor deposition over sapphire substrate scratched with Fe and Co metal wires gives horizontally aligned SWNTs, while no nanotube growth is observed for Au, Mo, and Ni wires. This result suggests that the nanoparticles scattered from Fe and Co wires act as the catalyst for SWNT growth, being different from the previously proposed substrate-catalyzed reaction mechanism. Further, we study the effects of the flow rates of CH 4-H 2 gases during the SWNT growth on the nanotube density and diameter.
AB - We report the growth of single-walled carbon nanotubes (SWNTs) over metal nanoparticles which are formed by scratching sapphire surface with metal wires. The chemical vapor deposition over sapphire substrate scratched with Fe and Co metal wires gives horizontally aligned SWNTs, while no nanotube growth is observed for Au, Mo, and Ni wires. This result suggests that the nanoparticles scattered from Fe and Co wires act as the catalyst for SWNT growth, being different from the previously proposed substrate-catalyzed reaction mechanism. Further, we study the effects of the flow rates of CH 4-H 2 gases during the SWNT growth on the nanotube density and diameter.
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U2 - 10.1143/JJAP.51.04DN02
DO - 10.1143/JJAP.51.04DN02
M3 - Article
AN - SCOPUS:84860364599
VL - 51
JO - Japanese Journal of Applied Physics
JF - Japanese Journal of Applied Physics
SN - 0021-4922
IS - 4 PART 2
M1 - 04DN02
ER -