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2004 Fiscal Year Final Research Report Summary

Experimental comparison between microscopic energy dissipation and inelastic molecular scattering from surfaces

Research Project

Project/Area Number 15510087
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Nanostructural science
Research InstitutionUniversity of Tsukuba

Principal Investigator

SASAKI Masahiro  University of Tsukuba, Graduate School of Pure and Applied Sciences, Associate Professor, 大学院・数理物質科学研究科, 助教授 (80282333)

Co-Investigator(Kenkyū-buntansha) YAMAMOTO Shigehiko  University of Tsukuba, National Institute of Advanced Industrial Sceince and Technology, Visiting Research Scientist, 客員研究員 (60251039)
Project Period (FY) 2003 – 2004
Keywordsnon-contact atomic force microscope(nc-AFM) / energy dissipation / surface reaction / supersonic molecular beam / inelastic molecular scattering / monolayer graphite / hydrocarbons / alkans
Research Abstract

The purpose of this study is to experimentally compare the microscopic mechanical energy dissipation during the observation with a non-contact atomic force microscope(nc-AFM) and the feature of the inelastic scattering of molecules from surfaces, and eventually to clarify the origin of the microscopic energy dissipation, which can be utilized to locally control the surface chemical reaction.
The microscopic mechanical energy dissipations on a carbon material-partially deposited Pt(111) surface are successfully evaluated with a nc-AFM equipped with an amplitude stabilized catilever excitation by automatically compensating the contact potential difference between tip and sample surfaces which induces electric energy dissipation.
On the other hand, for the evaluation of the energy dissipation with molecular beam scattering techniques, the highly oriented monolayer graphite (MG)-covered Pt(111) surface is prepared by a supersonic methane beam irradiation. The angular and velocity distributions of supersonic Ne,Ar,methane and ethane molecules scattered from clean and MG-covered Pt(111) surfaces are well explained within the framework of the classical hard cube model unless the rotational states of molecules are excited during scattering. This suggests that the contrast of the microscopic energy dissipation distribution image is due to the difference in the effective mass of the surface materials. However, the absolute values of the energy dissipations obtained from two methods are found to be largely different. The theoretical study is required to quantitatively clarify the origin of the microscopic energy dissipation.

  • Research Products

    (10 results)

All 2004

All Journal Article (10 results)

  • [Journal Article] Highly oriented monolayer graphite formation on Pt(111) by a supersonic methane beam2004

    • Author(s)
      H.Ueta 他
    • Journal Title

      Surface Science 560

      Pages: 183-190

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] A Study of TaN film field electron emission material by a Kelvin probe force microscope2004

    • Author(s)
      K.Miya 他
    • Journal Title

      Microelectronics Engineering 71

      Pages: 343-347

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Pt(111)表面での単原子層グラファイト形成におけるCH_4分子線並進エネルギーの影響2004

    • Author(s)
      植田寛和 他
    • Journal Title

      真空 47

      Pages: 544-549

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] 単原子層グラファイトで修飾されたPt(111)表面におけるC_2H_6分子の非弾性散乱ダイナミクス2004

    • Author(s)
      森大輔 他
    • Journal Title

      真空 47

      Pages: 633-637

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Inelastic scattering process of H_2O on Pt(111) studied by supersonic molecular beam techniques2004

    • Author(s)
      T.Kondo 他
    • Journal Title

      Surface Science 556-568

      Pages: 1153-1157

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Highly oriented monolayer graphite formation on Pt(111) by a supersonic methane beam2004

    • Author(s)
      H.Ueta et al.
    • Journal Title

      Surface Sceince 560

      Pages: 183-190

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] A Study of TaN film field electron emission material by a Kelvin probe force microscope2004

    • Author(s)
      K.Miya et al.
    • Journal Title

      Microelectronics Engineering 71

      Pages: 343-347

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Effect of Translational energy effect of CH_4 molecules on the formation of monolayer graphite on Pt(111)(in Japanese)2004

    • Author(s)
      H.Ueta et al.
    • Journal Title

      Shinku 47

      Pages: 544-549

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Dynamics of inelastic scattering of C_2H_6 from Pt(111) surfaces covered with monolayer graphite(in Japanese)2004

    • Author(s)
      D.Mori et al.
    • Journal Title

      Shinku 47

      Pages: 633-637

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Inelastic scattering process of H_2O on Pt(111) studied by supersonic molecular beam techniques2004

    • Author(s)
      T.Kondo et al.
    • Journal Title

      Surface Sceince 566-568

      Pages: 1153-1157

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2006-07-11  

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