Assembly of Complex Nano-Structure from Single Atoms-Chemical Identification, Manipulation and Assembly by AFM-

  • MORITA Seizo
    Department of Electrical, Electronic and Information Engineering, Osaka University
  • SUGIMOTO Yoshiaki
    Department of Electrical, Electronic and Information Engineering, Osaka University
  • OOYABU Noriaki
    Department of Electrical, Electronic and Information Engineering, Osaka University
  • CUSTANCE Óscar
    Department of Electrical, Electronic and Information Engineering, Osaka University
  • ABE Masayuki
    Department of Electrical, Electronic and Information Engineering, Osaka University
  • POU Pablo
    Departamento de Fısica Teŕica de la Materia Condensada, Universidad Autonoma de Madrid
  • JELINEK Pavel
    Institute of Physics, Academy of Sciences of the Czech Republic
  • PÉREZ Rubén
    Departamento de Fısica Teŕica de la Materia Condensada, Universidad Autonoma de Madrid

Bibliographic Information

Other Title
  • 複素ナノ構造体を組み立てる―原子間力顕微鏡で原子を識別・操作・組立―
  • フクソ ナノ コウゾウタイ オ クミタテル ゲンシカンリョク ケンビキョウ デ ゲンシ オ シキベツ ソウサ クミタテ

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Abstract

  An atomic force microscope (AFM) under noncontact and nearcontact regions operated at room-temperature (RT) in ultrahigh vacuum, is used as a tool for topography-based atomic discrimination and atomic-interchange manipulations of two intermixed atomic species on semiconductor surfaces. Noncontact AFM topography based site-specific force curves provide the chemical covalent bonding forces between the tip apex and the atoms at the surface. Here, we introduced an example related to topography-based atomic discrimination using selected Sn and Si adatoms in Sn/Si(111)-(√3 ×√3 ) surface. Recently, under nearcontact region, we found a lateral atom-interchange manipulation phenomenon at RT in Sn/Ge(111)-c(2×8) intermixed sample. This phenomenon can interchange an embedded Sn atom with a neighbor Ge atom at RT. Using the vector scan method under nearcontact region, we constructed “Atom Inlay”, that is, atom letters “Sn” consisted of 19 Sn atoms embedded in Ge(111)-c(2×8) substrate. Using these methods, now we can assemble compound semiconductor nanostructures atom-by-atom.<br>

Journal

  • Shinku

    Shinku 50 (3), 181-183, 2007

    The Vacuum Society of Japan

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