Conduction mechanism of the bamboo-shaped multiwalled carbon nanotubes

J. W. Jang; S. H. Kim; C. E. Lee; T. J. Lee; C. J. Lee; H. S. Kim; E. H. Kim; S. J. Noh

Conduction mechanism of the bamboo-shaped multiwalled carbon nanotubes

J. W. Jang, S. H. Kim, C. E. Lee, T. J. Lee, C. J. Lee, H. S. Kim, E. H. Kim, S. J. Noh

Research output: Contribution to journal › Conference article › peer-review

Abstract

Temperature-dependent resistivity measurements were carried out on bamboo-shaped multiwalled carbon nanotubes (BS-MWNTs) vertically grown on cobalt catalyst deposited Al₂O₃/Ti substrates and iron catalysts deposited SiO₂/Ti substrates at 750 - 950 °C by thermal chemical vapor deposition. The resistivity decreased with increasing growth temperature, and showed lower values in the case of SiO₂/Ti substrates than in the case of the Al₂O₃/Ti substrates. A heterogeneous model, compromising quasi 1-D metal terms and the fluctuation-induced tunneling through thin barriers between metallic regions was introduced to explain the conduction mechanism. As a result, it was proposed that the important factor for the conduction mechanism of BS-MWNTs is the inter-sheet conduction by discontinuous graphitic sheets at the compartments.

Original language	English
Pages (from-to)	S985-S988
Journal	Journal of the Korean Physical Society
Volume	42
Issue number	SUPPL.2
Publication status	Published - 2003 Feb
Event	Proceedings of the Joint International Plasma Symposium of 6th APCPST, 15th SPSM, OS 2002 and 11th KAPRA - Jeju Island, Korea, Republic of Duration: 2002 Jul 1 → 2002 Jul 4

Keywords

Bamboo-shape
Carbon nanotubes
Conduction mechanism

ASJC Scopus subject areas

General Physics and Astronomy

Cite this

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title = "Conduction mechanism of the bamboo-shaped multiwalled carbon nanotubes",

abstract = "Temperature-dependent resistivity measurements were carried out on bamboo-shaped multiwalled carbon nanotubes (BS-MWNTs) vertically grown on cobalt catalyst deposited Al2O3/Ti substrates and iron catalysts deposited SiO2/Ti substrates at 750 - 950 °C by thermal chemical vapor deposition. The resistivity decreased with increasing growth temperature, and showed lower values in the case of SiO2/Ti substrates than in the case of the Al2O3/Ti substrates. A heterogeneous model, compromising quasi 1-D metal terms and the fluctuation-induced tunneling through thin barriers between metallic regions was introduced to explain the conduction mechanism. As a result, it was proposed that the important factor for the conduction mechanism of BS-MWNTs is the inter-sheet conduction by discontinuous graphitic sheets at the compartments.",

keywords = "Bamboo-shape, Carbon nanotubes, Conduction mechanism",

author = "Jang, {J. W.} and Kim, {S. H.} and Lee, {C. E.} and Lee, {T. J.} and Lee, {C. J.} and Kim, {H. S.} and Kim, {E. H.} and Noh, {S. J.}",

year = "2003",

month = feb,

language = "English",

volume = "42",

pages = "S985--S988",

journal = "Journal of the Korean Physical Society",

issn = "0374-4884",

publisher = "Korean Physical Society",

number = "SUPPL.2",

note = "Proceedings of the Joint International Plasma Symposium of 6th APCPST, 15th SPSM, OS 2002 and 11th KAPRA ; Conference date: 01-07-2002 Through 04-07-2002",

}

TY - JOUR

T1 - Conduction mechanism of the bamboo-shaped multiwalled carbon nanotubes

AU - Jang, J. W.

AU - Kim, S. H.

AU - Lee, C. E.

AU - Lee, T. J.

AU - Lee, C. J.

AU - Kim, H. S.

AU - Kim, E. H.

AU - Noh, S. J.

PY - 2003/2

Y1 - 2003/2

N2 - Temperature-dependent resistivity measurements were carried out on bamboo-shaped multiwalled carbon nanotubes (BS-MWNTs) vertically grown on cobalt catalyst deposited Al2O3/Ti substrates and iron catalysts deposited SiO2/Ti substrates at 750 - 950 °C by thermal chemical vapor deposition. The resistivity decreased with increasing growth temperature, and showed lower values in the case of SiO2/Ti substrates than in the case of the Al2O3/Ti substrates. A heterogeneous model, compromising quasi 1-D metal terms and the fluctuation-induced tunneling through thin barriers between metallic regions was introduced to explain the conduction mechanism. As a result, it was proposed that the important factor for the conduction mechanism of BS-MWNTs is the inter-sheet conduction by discontinuous graphitic sheets at the compartments.

AB - Temperature-dependent resistivity measurements were carried out on bamboo-shaped multiwalled carbon nanotubes (BS-MWNTs) vertically grown on cobalt catalyst deposited Al2O3/Ti substrates and iron catalysts deposited SiO2/Ti substrates at 750 - 950 °C by thermal chemical vapor deposition. The resistivity decreased with increasing growth temperature, and showed lower values in the case of SiO2/Ti substrates than in the case of the Al2O3/Ti substrates. A heterogeneous model, compromising quasi 1-D metal terms and the fluctuation-induced tunneling through thin barriers between metallic regions was introduced to explain the conduction mechanism. As a result, it was proposed that the important factor for the conduction mechanism of BS-MWNTs is the inter-sheet conduction by discontinuous graphitic sheets at the compartments.

KW - Bamboo-shape

KW - Carbon nanotubes

KW - Conduction mechanism

UR - http://www.scopus.com/inward/record.url?scp=0037307961&partnerID=8YFLogxK

M3 - Conference article

AN - SCOPUS:0037307961

SN - 0374-4884

VL - 42

SP - S985-S988

JO - Journal of the Korean Physical Society

JF - Journal of the Korean Physical Society

IS - SUPPL.2

T2 - Proceedings of the Joint International Plasma Symposium of 6th APCPST, 15th SPSM, OS 2002 and 11th KAPRA

Y2 - 1 July 2002 through 4 July 2002

ER -

Conduction mechanism of the bamboo-shaped multiwalled carbon nanotubes

Abstract

Keywords

ASJC Scopus subject areas

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