Interaction of condensed water molecules with hydroxyl and hydrogen groups on Si(0 0 1)

Hiroyuki S. Kato, Maki Kawai, Kazuto Akagi, Shinji Tsuneyuki

Research output: Contribution to journalConference article

14 Citations (Scopus)

Abstract

Interaction of condensed water molecules with hydroxyl and hydrogen groups on Si(0 0 1) was investigated using high-resolution electron energy-loss spectroscopy (HREELS) in an ultrahigh vacuum system and also slab model calculations based on the density functional theory (DFT). Equal amounts of the hydroxyl and hydrogen groups were formed via dissociative adsorption of water molecules on a reconstructed Si(0 0 1)-(2 × 1) surface. The interaction between the hydroxyl group and condensed water molecules was clearly observed in vibrational peak shifts of the hydroxyl group, while the hydrogen group showed little interaction, reflecting its hydrophilic or hydrophobic property, respectively.

Original languageEnglish
Pages (from-to)34-40
Number of pages7
JournalSurface Science
Volume587
Issue number1-2
DOIs
Publication statusPublished - 2005 Aug 1
Externally publishedYes
EventProceedings of the 11th International Conference on Vibrations at Surfaces -
Duration: 2004 Jun 62005 Jun 10

Keywords

  • Electron energy-loss spectroscopy (EELS)
  • Low index single crystal
  • Silicon
  • Solid-liquid interface
  • Vibrations of adsorbed molecules
  • Water
  • Wetting

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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