Fabrication of fluorine-terminated diamond-like carbon thin film using a hyperthermal atomic fluorine beam |
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Authors: | Kazuhiro Kanda Noriko Yamada Kumiko Yokota Masahito Tagawa Masahito Niibe Makoto Okada Yuichi Haruyama Shinji Matsui |
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Affiliation: | 1. LASTI, University of Hyogo, 3-1-2 Koto, Kamigori, Ako, Hyogo 678-1205, Japan;2. Reasearch & Development Center, Dai Nippon Printing Co., Ltd. 250-1, Wakashiba, Kashiwa, Chiba 277-0871, Japan;3. Department of Mechanical Engineering, Kobe University, Rokko-dai 1-1, Nada, Kobe 657-8501, Japan |
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Abstract: | Surface modification of diamond-like carbon (DLC) film was performed using a hyperthermal atomic fluorine beam on the purpose of production of hydrophobic surface by maintaining the high hardness of DLC film. By the irradiation of atomic fluorine beam of a 1.0 × 1020 atoms/cm2, the contact angle of a water drop against the DLC surface increased from 73° to 111°. The formation of CF3, CF2 and CF bonding on the modified DLC surface was confirmed from the measurements of X-ray photoelectron spectra and near-edge X-ray absorption fine structure spectra. Irradiation of hyperthermal atomic fluorine beam was concluded to produce insulator fluorine-terminated DLC film, which has high F content on the surface, by the taking of the use of neutral atomic beam as a fluorine source. |
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