Impact of helium pressure in arc plasma synthesis on crystallinity of single-walled carbon nanotubes

Single-walled carbon nanotubes (SWNTs) were synthesized with a high growth rate by an arc plasma method employing the electrodes made from a Ni-Y mixture catalyst. In a previous study, it was reported that the monitoring of high-crystallinity SWNT growth enabled the evaluation of the results of the...

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Bibliographic Details
Published inJapanese Journal of Applied Physics Vol. 57; no. 6S2; pp. 6 - 9
Main Authors Ando, Atsushi, Takeda, Keigo, Ohta, Takayuki, Ito, Masafumi, Hiramatsu, Mineo, Ishikawa, Kenji, Kondo, Hiroki, Sekine, Makoto, Suzuki, Tomoko, Inoue, Sakae, Ando, Yoshinori, Hori, Masaru
Format Journal Article
LanguageEnglish
Published Tokyo The Japan Society of Applied Physics 01.06.2018
Japanese Journal of Applied Physics
Subjects
Catalysis
Crystal structure
Crystallinity
Emission analysis
Helium
Optical emission spectroscopy
Plasma
Single wall carbon nanotubes
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Summary:Single-walled carbon nanotubes (SWNTs) were synthesized with a high growth rate by an arc plasma method employing the electrodes made from a Ni-Y mixture catalyst. In a previous study, it was reported that the monitoring of high-crystallinity SWNT growth enabled the evaluation of the results of the optical emission spectroscopy (OES) of C2, Ni, and Y. Here, the impact of helium pressure of arc plasma on the high crystallinity of SWNTs was determined by considering the high intensity ratios of catalytic metals over C2 emissions at low helium pressures in the arc plasma.
ISSN:0021-4922
1347-4065
DOI:10.7567/JJAP.57.06JF01