Fabrication of probe-typed carbon nanotube point emitters

Seung Il Jung; Jai Seong Choi; Hyung Cheoul Shim; Soohyun Kim; Sung Ho Jo; Cheol Jin Lee

doi:10.1063/1.2402222

Fabrication of probe-typed carbon nanotube point emitters

Seung Il Jung, Jai Seong Choi, Hyung Cheoul Shim, Soohyun Kim, Sung Ho Jo, Cheol Jin Lee

School of Electrical Engineering

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

42 Citations (Scopus)

Abstract

Probe-typed carbon nanotube (CNT) point emitter was fabricated by attaching single-walled CNT (SWCNT) and double-walled CNT (DWCNT) bundles onto the atomic force microscope tip using dielectrophoresis method. The field emission current from SWCNT point emitter was 4.9 μA at 750 V, which is corresponding to the emission current density of at least 1.2× 103 A cm2. The Fowler-Nordheim plots for the SWCNT and DWCNT point emitters revealed that the SWCNT bundle consists of more individual SWCNTs than DWCNT bundle and, as a result, the field emission performance of the SWCNT point emitter is better than the DWCNT point emitter. It is suggested that the probe-typed CNT point emitters can be used for microwave amplifiers and high-resolution electron-beam instruments.

Original language	English
Article number	233108
Journal	Applied Physics Letters
Volume	89
Issue number	23
DOIs	https://doi.org/10.1063/1.2402222
Publication status	Published - 2006

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.2402222

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title = "Fabrication of probe-typed carbon nanotube point emitters",

abstract = "Probe-typed carbon nanotube (CNT) point emitter was fabricated by attaching single-walled CNT (SWCNT) and double-walled CNT (DWCNT) bundles onto the atomic force microscope tip using dielectrophoresis method. The field emission current from SWCNT point emitter was 4.9 μA at 750 V, which is corresponding to the emission current density of at least 1.2× 103 A cm2. The Fowler-Nordheim plots for the SWCNT and DWCNT point emitters revealed that the SWCNT bundle consists of more individual SWCNTs than DWCNT bundle and, as a result, the field emission performance of the SWCNT point emitter is better than the DWCNT point emitter. It is suggested that the probe-typed CNT point emitters can be used for microwave amplifiers and high-resolution electron-beam instruments.",

author = "Jung, {Seung Il} and Choi, {Jai Seong} and Shim, {Hyung Cheoul} and Soohyun Kim and Jo, {Sung Ho} and Lee, {Cheol Jin}",

note = "Funding Information: This work was supported by National R&D Project for Nano Science and Technology and supported by the SRC program of Center for Nanotubes and Nanostructured Composites of MOST/KOSEF and supported by the Ministry of Commerce, Industry, and Energy of Korea through a Components and Materials Technology Development Project (No. 0401-DD2-0162).",

year = "2006",

doi = "10.1063/1.2402222",

language = "English",

volume = "89",

journal = "Applied Physics Letters",

issn = "0003-6951",

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T1 - Fabrication of probe-typed carbon nanotube point emitters

AU - Jung, Seung Il

AU - Choi, Jai Seong

AU - Shim, Hyung Cheoul

AU - Kim, Soohyun

AU - Jo, Sung Ho

AU - Lee, Cheol Jin

N1 - Funding Information: This work was supported by National R&D Project for Nano Science and Technology and supported by the SRC program of Center for Nanotubes and Nanostructured Composites of MOST/KOSEF and supported by the Ministry of Commerce, Industry, and Energy of Korea through a Components and Materials Technology Development Project (No. 0401-DD2-0162).

PY - 2006

Y1 - 2006

N2 - Probe-typed carbon nanotube (CNT) point emitter was fabricated by attaching single-walled CNT (SWCNT) and double-walled CNT (DWCNT) bundles onto the atomic force microscope tip using dielectrophoresis method. The field emission current from SWCNT point emitter was 4.9 μA at 750 V, which is corresponding to the emission current density of at least 1.2× 103 A cm2. The Fowler-Nordheim plots for the SWCNT and DWCNT point emitters revealed that the SWCNT bundle consists of more individual SWCNTs than DWCNT bundle and, as a result, the field emission performance of the SWCNT point emitter is better than the DWCNT point emitter. It is suggested that the probe-typed CNT point emitters can be used for microwave amplifiers and high-resolution electron-beam instruments.

AB - Probe-typed carbon nanotube (CNT) point emitter was fabricated by attaching single-walled CNT (SWCNT) and double-walled CNT (DWCNT) bundles onto the atomic force microscope tip using dielectrophoresis method. The field emission current from SWCNT point emitter was 4.9 μA at 750 V, which is corresponding to the emission current density of at least 1.2× 103 A cm2. The Fowler-Nordheim plots for the SWCNT and DWCNT point emitters revealed that the SWCNT bundle consists of more individual SWCNTs than DWCNT bundle and, as a result, the field emission performance of the SWCNT point emitter is better than the DWCNT point emitter. It is suggested that the probe-typed CNT point emitters can be used for microwave amplifiers and high-resolution electron-beam instruments.

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VL - 89

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JF - Applied Physics Letters

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M1 - 233108

ER -

Fabrication of probe-typed carbon nanotube point emitters

Abstract

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