Surface modification behaviors of glass-like carbon by oxygen ion implantation

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• 作者：Kazumasa Nakamura ; Yoshikazu Teranishi ; Yukako Wada ; Ko-ichiro Tano ; Isao Nakamura ; Yasuhiro Tanabe ; Eiichi Yasuda ; Takashi Akatsu ; Hitoshi Shindo
• 关键词：Carbon alloy ; Glass-like carbon ; Ion implantation ; Surface modification ; Biological affinities
• 刊名：Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
• 出版年：2009
• 出版时间：1 May 2009
• 年：2009
• 卷：267
• 期：8-9
• 页码：1642-1644
• 全文大小：1453 K

文摘

Surface modification behaviors of glass-like carbon (GLC) by oxygen ion implantation were studied at the ionic doses of 1, 10 and 100 × 10¹⁴ ions/cm². Formation of bank network at the GLC surface, following initial smoothing, was observed with atomic force microscopy (AFM). At the same time, Friction coefficient and surface roughness decreased at the ionic dose of 1 × 10¹⁴ ions/cm², but increased again at higher doses. Increase in surface disorder at lower ionic dose and change to amorphous at higher doses were detected with Raman spectroscopy. As O/C ratio measured with X-ray photoelectron spectroscopy (XPS) increased with the ionic dose, the contact angle of the GLC surface with water decreased. The most biocompatible GLC surface was obtained at the dose of 1 × 10¹⁴ ions/cm².