Selective removal of metallic SWNTs using microwave radiation

J. W. Song; H. W. Seo; J. K. Park; J. E. Kim; D. G. Choi; C. S. Han

doi:10.1016/j.cap.2007.04.055

Selective removal of metallic SWNTs using microwave radiation

J. W. Song, H. W. Seo, J. K. Park, J. E. Kim, D. G. Choi, C. S. Han

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

36 Citations (Scopus)

Abstract

We report new method for selectively removing the metallic CNTs from semiconducting CNTs in a powder using high-power microwave radiation in the infrared and radio frequency range of the electromagnetic spectrum. SWNTs in a powder film were heated in a 2.5 GHz microwave oven for a few minutes, and the metallic nanotubes burned more rapidly than the semiconducting nanotubes. Raman data showed that the ratio of metallic to semiconducting nanotubes decreased dramatically after exposure to microwave radiation. Using their more rapid absorption of the radiation energy of the microwaves, we achieved the selective removal of metallic SWNTs from semiconducting SWNTs. This method results in the high-purity of semiconducting SWNTs necessary for sensor and electronic applications.

Original language	English
Pages (from-to)	725-728
Number of pages	4
Journal	Current Applied Physics
Volume	8
Issue number	6
DOIs	https://doi.org/10.1016/j.cap.2007.04.055
Publication status	Published - 2008 Oct
Externally published	Yes

Keywords

Microwave
SWNT
Selective removal

ASJC Scopus subject areas

Materials Science(all)
Physics and Astronomy(all)

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10.1016/j.cap.2007.04.055

Cite this

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title = "Selective removal of metallic SWNTs using microwave radiation",

abstract = "We report new method for selectively removing the metallic CNTs from semiconducting CNTs in a powder using high-power microwave radiation in the infrared and radio frequency range of the electromagnetic spectrum. SWNTs in a powder film were heated in a 2.5 GHz microwave oven for a few minutes, and the metallic nanotubes burned more rapidly than the semiconducting nanotubes. Raman data showed that the ratio of metallic to semiconducting nanotubes decreased dramatically after exposure to microwave radiation. Using their more rapid absorption of the radiation energy of the microwaves, we achieved the selective removal of metallic SWNTs from semiconducting SWNTs. This method results in the high-purity of semiconducting SWNTs necessary for sensor and electronic applications.",

keywords = "Microwave, SWNT, Selective removal",

author = "Song, {J. W.} and Seo, {H. W.} and Park, {J. K.} and Kim, {J. E.} and Choi, {D. G.} and Han, {C. S.}",

note = "Funding Information: We thank the financial support from the Center for Nanoscale Mechatronics & Manufacturing of the 21C Frontier Research Program by MOST.",

year = "2008",

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doi = "10.1016/j.cap.2007.04.055",

language = "English",

volume = "8",

pages = "725--728",

journal = "Current Applied Physics",

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T1 - Selective removal of metallic SWNTs using microwave radiation

AU - Song, J. W.

AU - Seo, H. W.

AU - Park, J. K.

AU - Kim, J. E.

AU - Choi, D. G.

AU - Han, C. S.

N1 - Funding Information: We thank the financial support from the Center for Nanoscale Mechatronics & Manufacturing of the 21C Frontier Research Program by MOST.

PY - 2008/10

Y1 - 2008/10

N2 - We report new method for selectively removing the metallic CNTs from semiconducting CNTs in a powder using high-power microwave radiation in the infrared and radio frequency range of the electromagnetic spectrum. SWNTs in a powder film were heated in a 2.5 GHz microwave oven for a few minutes, and the metallic nanotubes burned more rapidly than the semiconducting nanotubes. Raman data showed that the ratio of metallic to semiconducting nanotubes decreased dramatically after exposure to microwave radiation. Using their more rapid absorption of the radiation energy of the microwaves, we achieved the selective removal of metallic SWNTs from semiconducting SWNTs. This method results in the high-purity of semiconducting SWNTs necessary for sensor and electronic applications.

AB - We report new method for selectively removing the metallic CNTs from semiconducting CNTs in a powder using high-power microwave radiation in the infrared and radio frequency range of the electromagnetic spectrum. SWNTs in a powder film were heated in a 2.5 GHz microwave oven for a few minutes, and the metallic nanotubes burned more rapidly than the semiconducting nanotubes. Raman data showed that the ratio of metallic to semiconducting nanotubes decreased dramatically after exposure to microwave radiation. Using their more rapid absorption of the radiation energy of the microwaves, we achieved the selective removal of metallic SWNTs from semiconducting SWNTs. This method results in the high-purity of semiconducting SWNTs necessary for sensor and electronic applications.

KW - Microwave

KW - SWNT

KW - Selective removal

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DO - 10.1016/j.cap.2007.04.055

M3 - Article

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SN - 1567-1739

VL - 8

SP - 725

EP - 728

JO - Current Applied Physics

JF - Current Applied Physics

IS - 6

ER -

Selective removal of metallic SWNTs using microwave radiation

Abstract

Keywords

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