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3)-ordered silicon layer on Al(111)Sato, Yusuke*; Fukaya, Yuki; Cameau, M.*; Kundu, A. K.*; Shiga, Daisuke*; Yukawa, Ryu*; Horiba, Koji*; Chen, C.-H.*; Huang, A.*; Jeng, H.-T.*; et al.
Physical Review Materials (Internet), 4(6), p.064005_1 - 064005_6, 2020/06
Times Cited Count：6 Percentile：30.33(Materials Science, Multidisciplinary)no abstracts in English
Sekioka, T.*; Terasawa, Michitaka*; Sataka, Masao; Kitazawa, Shinichi; Niibe, M.*
Nuclear Instruments and Methods in Physics Research B, 193(1-4), p.751 - 754, 2002/01
Times Cited Count：2 Percentile：18.91(Instruments & Instrumentation)no abstracts in English
Tagawa, Masahito*; Yokota, Kumiko*; Matsumoto, Koji*; Kitamura, Akira*; Yamada, Noriko*; Kanda, Kazuhiro*; Niibe, Masahito*; Yoshigoe, Akitaka; Teraoka, Yuden; Belin, M.*; et al.
no journal, ,
We have investigated on degradation of hydrogenated diamond-like carbon (HDLC) surfaces by atomic oxygen beams for space environments under laboratory environments. HDLC was formed on silicon surfaces by a plasma CVD method. The atomic oxygen neams were generated by a laser detonation method. The HDLC surfaces modified by the atomic oxygens were analyzed by Synchrotron Radiation Photo-Emission Spectroscopy (SRPES), Ratherford Backscattering Spectroscopy (RBS), Elestic Recoil Detection Analysis (ERDA), Near-Edge X-ray Absorption Fine Structure method (NEXAFS). Chemical bonding states of oxygen atoms were almost maintained as they were. Concentrations of carbon and hydrogen, sp
/sp
ratio were decreased by the action of oxygen atoms. We concluded that carbon atoms in the sp state were selectively etched out.
Tagawa, Masahito*; Yokota, Kumiko*; Kitamura, Akira*; Matsumoto, Koji*; Yamada, Noriko*; Kanda, Kazuhiro*; Niibe, Masahito*; Yoshigoe, Akitaka; Teraoka, Yuden; Belin, M.*; et al.
no journal, ,
Degradation of hydrogenated diamond -like carbon surfaces in space environments by action of high speed atomic oxygen beams has been investigated in laboratory environments. The HDLC was prepared on Si substrates by a plasma CVD method. High speed oxygen atomic beams were generated by a laser detonation method. The HDLC surfaces irradiated by the oxygen atomic beams were analyzed by Synchrotron Radiation Photoemission Spectroscopy (SRPES), Ratherford Backscattering Spectroscopy (RBS), Elastic Recoil Detection Analysis (ERDA), Near-Edge X-ray Absorption Fine Structure (NEXAFS). Although chemical bonding states of oxygen atoms were maintained as they were even after the oxygen atomic beam irradiation, concentrations of carbon and hydrogen were decreased. The sp/sp ratio was also decreased. Consequently, carbon atoms in the sp state were selectively etched out with hydrogen atoms by chemical reactions with oxygen atomic beams.
