Thickness effect of nanosized thin-film iron dot on growth of multiwall carbon nanotubes

Y. R. Ma, M. S. Wong, C. H. See, K. W. Cheng, J. C. Wu, Y. Liou, Y. D. Yao

Research output: Contribution to journalArticle

1 Citation (Scopus)

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 languageEnglish
Article number10J707
JournalJournal of Applied Physics
Volume97
Issue number10
DOIs
Publication statusPublished - 2005 May 15

Fingerprint

carbon nanotubes
iron
thin films
catalysts
micrometers
filaments
methane
vapor deposition
nanoparticles
hydrogen

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Ma, Y. R. ; Wong, M. S. ; See, C. H. ; Cheng, K. W. ; Wu, J. C. ; Liou, Y. ; Yao, Y. D. / Thickness effect of nanosized thin-film iron dot on growth of multiwall carbon nanotubes. In: Journal of Applied Physics. 2005 ; Vol. 97, No. 10.
@article{8a5d296b6b384385866ecc75ef313b2e,
title = "Thickness effect of nanosized thin-film iron dot on growth of multiwall carbon nanotubes",
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.",
author = "Ma, {Y. R.} and Wong, {M. S.} and See, {C. H.} and Cheng, {K. W.} and Wu, {J. C.} and Y. Liou and Yao, {Y. D.}",
year = "2005",
month = "5",
day = "15",
doi = "10.1063/1.1853151",
language = "English",
volume = "97",
journal = "Journal of Applied Physics",
issn = "0021-8979",
publisher = "American Institute of Physics Publising LLC",
number = "10",

}

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 journalArticle

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.

UR - http://www.scopus.com/inward/record.url?scp=20944446340&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=20944446340&partnerID=8YFLogxK

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 -