電解液中金属表面上のナノ構造の崩壊過程  [in Japanese] Decay Processes of Nano-Features on Metal Surfaces in Electrolytes  [in Japanese]

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Author(s)

    • 平井 信充 HIRAI Nobumitsu
    • 大阪大学大学院工学研究科マテリアル応用工学専攻 Department of Materials Science and Processing, Graduate School of Engineering, Osaka University

Abstract

Decay processes of multi-layered islands on Au(100) surfaces, as well as nano-holes on Au(100) and Ag(100) surfaces in sulfuric acid aqueous solution under potential control have been investigated by <I>in-situ</I> electrochemical atomic force microscopy (EC-AFM). The influences of surface excess charge and of the high electric field at metal/electrolyte interface on the decay processes have been discussed. The decay rate of the first layer of the multi-layered islands is constant independently of the time elapse, suggesting that the detachment of the atoms from the step edges is a limiting process for the decay. The decay rate of the second or the third layer after the complete collapse of the upper layer is almost the same as that of the first layer. The rate is much greater than that before the complete collapse of the upper layer. The decay rate of the nano-islands and -holes on Au(100) has a minimum near the zero charge potential, and increases as the potential varies from the minimum.

Journal

  • Hyomen Kagaku

    Hyomen Kagaku 23(4), 248-253, 2002-04-10

    The Surface Science Society of Japan

References:  15

Codes

  • NII Article ID (NAID)
    10008008580
  • NII NACSIS-CAT ID (NCID)
    AN00334149
  • Text Lang
    JPN
  • Article Type
    ART
  • ISSN
    03885321
  • NDL Article ID
    6135270
  • NDL Source Classification
    ZM35(科学技術--物理学)
  • NDL Call No.
    Z15-379
  • Data Source
    CJP  NDL  J-STAGE 
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