Competition and cooperation between lattice-oriented growth and step-templated growth of aligned carbon nanotubes on sapphire

Hiroki Ago; Kenta Imamoto; Naoki Ishigami; Ryota Ohdo; Ken Ichi Ikeda; Masaharu Tsuji

doi:10.1063/1.2715031

Competition and cooperation between lattice-oriented growth and step-templated growth of aligned carbon nanotubes on sapphire

Hiroki Ago, Kenta Imamoto, Naoki Ishigami, Ryota Ohdo, Ken Ichi Ikeda, Masaharu Tsuji

Research output: Contribution to journal › Article › peer-review

39 Citations (Scopus)

Abstract

The authors study the growth mechanism of single-walled carbon nanotubes (SWNTs) horizontally aligned on A -plane single crystal sapphire (11 2- 0) by making the controlled step/terrace structure. SWNT growth direction was sensitive to the surface geometry of the sapphire, and there was competition between two growth modes, lattice-oriented growth and step-templated growth. On the substrate with single-atomic steps, SWNTs aligned parallel to the [1 1- 00] direction as dominated by the lattice-oriented growth mode, while SWNTs aligned along the step edges when the double-atomic or higher steps were formed. Our findings have potential for the fabrication of designed architecture of SWNTs by combining these two growth modes.

Original language	English
Article number	123112
Journal	Applied Physics Letters
Volume	90
Issue number	12
DOIs	https://doi.org/10.1063/1.2715031
Publication status	Published - 2007

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.2715031

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title = "Competition and cooperation between lattice-oriented growth and step-templated growth of aligned carbon nanotubes on sapphire",

abstract = "The authors study the growth mechanism of single-walled carbon nanotubes (SWNTs) horizontally aligned on A -plane single crystal sapphire (11 2- 0) by making the controlled step/terrace structure. SWNT growth direction was sensitive to the surface geometry of the sapphire, and there was competition between two growth modes, lattice-oriented growth and step-templated growth. On the substrate with single-atomic steps, SWNTs aligned parallel to the [1 1- 00] direction as dominated by the lattice-oriented growth mode, while SWNTs aligned along the step edges when the double-atomic or higher steps were formed. Our findings have potential for the fabrication of designed architecture of SWNTs by combining these two growth modes.",

author = "Hiroki Ago and Kenta Imamoto and Naoki Ishigami and Ryota Ohdo and Ikeda, {Ken Ichi} and Masaharu Tsuji",

note = "Funding Information: This work was supported by the Grant-in-aid for Scientific Research from MEXT, the Industrial Technology Research Program from NEDO, and the CREST-JST. The authors acknowledge T. Morikawa and K. Yanagi of Kyocera Co. for valuable discussion. ",

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volume = "90",

journal = "Applied Physics Letters",

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T1 - Competition and cooperation between lattice-oriented growth and step-templated growth of aligned carbon nanotubes on sapphire

AU - Ago, Hiroki

AU - Imamoto, Kenta

AU - Ishigami, Naoki

AU - Ohdo, Ryota

AU - Ikeda, Ken Ichi

AU - Tsuji, Masaharu

N1 - Funding Information: This work was supported by the Grant-in-aid for Scientific Research from MEXT, the Industrial Technology Research Program from NEDO, and the CREST-JST. The authors acknowledge T. Morikawa and K. Yanagi of Kyocera Co. for valuable discussion.

PY - 2007

Y1 - 2007

N2 - The authors study the growth mechanism of single-walled carbon nanotubes (SWNTs) horizontally aligned on A -plane single crystal sapphire (11 2- 0) by making the controlled step/terrace structure. SWNT growth direction was sensitive to the surface geometry of the sapphire, and there was competition between two growth modes, lattice-oriented growth and step-templated growth. On the substrate with single-atomic steps, SWNTs aligned parallel to the [1 1- 00] direction as dominated by the lattice-oriented growth mode, while SWNTs aligned along the step edges when the double-atomic or higher steps were formed. Our findings have potential for the fabrication of designed architecture of SWNTs by combining these two growth modes.

AB - The authors study the growth mechanism of single-walled carbon nanotubes (SWNTs) horizontally aligned on A -plane single crystal sapphire (11 2- 0) by making the controlled step/terrace structure. SWNT growth direction was sensitive to the surface geometry of the sapphire, and there was competition between two growth modes, lattice-oriented growth and step-templated growth. On the substrate with single-atomic steps, SWNTs aligned parallel to the [1 1- 00] direction as dominated by the lattice-oriented growth mode, while SWNTs aligned along the step edges when the double-atomic or higher steps were formed. Our findings have potential for the fabrication of designed architecture of SWNTs by combining these two growth modes.

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Competition and cooperation between lattice-oriented growth and step-templated growth of aligned carbon nanotubes on sapphire

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