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Shin, Hyung-Joon
Nanoscale Materials Science Lab (NMSL)
Research Interests
  • Scanning tunneling microscopy, surface science, interface science, nanomaterials

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State-selective dissociation of a single water molecule on an ultrathin MgO film

Cited 56 times inthomson ciCited 44 times inthomson ci
Title
State-selective dissociation of a single water molecule on an ultrathin MgO film
Author
Shin, Hyung-JoonJung, JaehoonMotobayashi, KentaYanagisawa, SusumuMorikawa, YoshitadaKim, YousooKawai, Maki
Keywords
Atomic scale; Low temperatures; MgO films; Molecular process; Oxide surface; Reaction paths; Scanning tunnelling microscopy; Scientific fields; Single molecule level; Ultra-thin; Water molecule
Issue Date
2010-05
Publisher
NATURE PUBLISHING GROUP
Citation
NATURE MATERIALS, v.9, no.5, pp.442 - 447
Abstract
The interaction of water with oxide surfaces has drawn considerable interest, owing to its application to problems in diverse scientific fields. Atomic-scale insights into water molecules on the oxide surface have long been recognized as essential for a fundamental understanding of the molecular processes occurring there. Here, we report the dissociation of a single water molecule on an ultrathin MgO film using low-temperature scanning tunnelling microscopy. Two types of dissociation pathwayvibrational excitation and electronic excitationare selectively achieved by means of injecting tunnelling electrons at the single-molecule level, resulting in different dissociated products according to the reaction paths. Our results reveal the advantage of using a MgO film, rather than bulk MgO, as a substrate in chemical reactions.
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DOI
10.1038/NMAT2740
ISSN
1476-1122
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MSE_Journal Papers
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