Abstract
Hot-filament chemical vapor deposition, using a mixture of methane and hydrogen, is used to grow micrometer-long multiwall carbon nanotubes (MWNTs) on 1-μm -diametric iron dots with thicknesses of 54, 40, and 20 nm. Bunches of MWNTs grow on the nanosized thin-film iron dots, and thicker iron dots have more MWNTs, because the nanosized thin-film iron dot behaves as a thin film with many catalyst nanoparticles rather than as a catalyst surface. Therefore, the thickness of the nanosized thin-film iron dot strongly dominates the MWNT growth. However, the MWNTs growing on the iron dots are 1 μm long and ~90 nm wide, indicating that the length and diameter of the MWNT are independent of the size and thickness of the iron dot. In addition, the effect of the applied electrical field on the growth of MWNTs is presented.
| Original language | English |
|---|---|
| Article number | 10J707 |
| Journal | Journal of Applied Physics |
| Volume | 97 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - 2005 May 15 |
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All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)
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Thickness effect of nanosized thin-film iron dot on growth of multiwall carbon nanotubes. / Ma, Y. R.; Wong, M. S.; See, C. H.; Cheng, K. W.; Wu, J. C.; Liou, Y.; Yao, Y. D.
In: Journal of Applied Physics, Vol. 97, No. 10, 10J707, 15.05.2005.Research output: Contribution to journal › Article
TY - JOUR
T1 - Thickness effect of nanosized thin-film iron dot on growth of multiwall carbon nanotubes
AU - Ma, Y. R.
AU - Wong, M. S.
AU - See, C. H.
AU - Cheng, K. W.
AU - Wu, J. C.
AU - Liou, Y.
AU - Yao, Y. D.
PY - 2005/5/15
Y1 - 2005/5/15
N2 - Hot-filament chemical vapor deposition, using a mixture of methane and hydrogen, is used to grow micrometer-long multiwall carbon nanotubes (MWNTs) on 1-μm -diametric iron dots with thicknesses of 54, 40, and 20 nm. Bunches of MWNTs grow on the nanosized thin-film iron dots, and thicker iron dots have more MWNTs, because the nanosized thin-film iron dot behaves as a thin film with many catalyst nanoparticles rather than as a catalyst surface. Therefore, the thickness of the nanosized thin-film iron dot strongly dominates the MWNT growth. However, the MWNTs growing on the iron dots are 1 μm long and ~90 nm wide, indicating that the length and diameter of the MWNT are independent of the size and thickness of the iron dot. In addition, the effect of the applied electrical field on the growth of MWNTs is presented.
AB - Hot-filament chemical vapor deposition, using a mixture of methane and hydrogen, is used to grow micrometer-long multiwall carbon nanotubes (MWNTs) on 1-μm -diametric iron dots with thicknesses of 54, 40, and 20 nm. Bunches of MWNTs grow on the nanosized thin-film iron dots, and thicker iron dots have more MWNTs, because the nanosized thin-film iron dot behaves as a thin film with many catalyst nanoparticles rather than as a catalyst surface. Therefore, the thickness of the nanosized thin-film iron dot strongly dominates the MWNT growth. However, the MWNTs growing on the iron dots are 1 μm long and ~90 nm wide, indicating that the length and diameter of the MWNT are independent of the size and thickness of the iron dot. In addition, the effect of the applied electrical field on the growth of MWNTs is presented.
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U2 - 10.1063/1.1853151
DO - 10.1063/1.1853151
M3 - Article
AN - SCOPUS:20944446340
VL - 97
JO - Journal of Applied Physics
JF - Journal of Applied Physics
SN - 0021-8979
IS - 10
M1 - 10J707
ER -