Time-resolved SFG study of formate on a Ni( 1 1 1 ) surface under irradiation of picosecond laser pulses

H. Noguchi, T. Okada, K. Onda, S. S. Kano, A. Wada, K. Domen

研究成果: ジャーナルへの寄稿会議記事査読

8 被引用数 (Scopus)

抄録

Time-resolved sum-frequency generation spectroscopy was carried out on a deuterated formate (DCOO) adsorbed on Ni(1 1 1) surface to investigate the surface reaction dynamics under instantaneous surface temperature jump induced by the irradiation by picosecond laser pulses. The irradiation of pump pulse (800 nm) caused the rapid intensity decrease of both CD and OCO stretching modes of bridged formate on Ni(1 1 1). Different temporal behaviors of intensity recovery between these two vibrational modes were observed, i.e., CD stretching mode recovered faster than OCO. This is the first result to show that the dynamics of adsorbates on metals strongly depends on the observed vibrational mode. From the results of temperature and pump fluence dependence, we concluded that the observed intensity change was not due to the decomposition or desorption, but was induced by a non-thermal process.

本文言語英語
ページ(範囲)183-188
ページ数6
ジャーナルSurface Science
528
1-3
DOI
出版ステータス出版済み - 3月 20 2003
外部発表はい
イベントDIET -9 - Aussois, フランス
継続期間: 6月 1 20026月 4 2002

!!!All Science Journal Classification (ASJC) codes

  • 凝縮系物理学
  • 表面および界面
  • 表面、皮膜および薄膜
  • 材料化学

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