Pulsed laser ablation of graphite in O2 atmosphere for preparation of diamond films and carbon nanotubes

K. Nakajima, M. Furusawa, T. Yamamoto, J. Tashiro, A. Sasaki, T. Chikyow, P. Ahmet, H. Yamada, M. Yoshimoto

研究成果: Article査読

16 被引用数 (Scopus)

抄録

Spatially and time-resolved optical emission analysis was carried out for the plasma plume produced by KrF excimer laser ablation of graphite in various oxygen atmospheres. Furthermore, highly ordered carbon nanofibers were fabricated by pulsed laser ablation using a graphite target containing approximately 1 mol.% metal oxide, such as NiO. In our laser ablation process, carbon nanofibers are deposited in an oxygen atmosphere. From the optical emission study, the visible carbon plasma plume in O2 gas was found to be dominated by the emission of C2 molecules and C atoms. Emission of a C2 Swan band was strongly observed near the substrate under the diamond growth conditions (0.1-0.15 torr O2). From the time-resolved emission study, ablated carbon particles were estimated to have a high kinetic energy of approximately 10 eV.

本文言語English
ページ(範囲)953-956
ページ数4
ジャーナルDiamond and Related Materials
11
3-6
DOI
出版ステータスPublished - 2002 3
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 化学 (全般)
  • 機械工学
  • 材料化学
  • 電子工学および電気工学

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