Controlled Array of Silver Nanoparticles on Nanopatterns

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  • Yamamoto Hiroki
    The Institute of Scientific and Industrial Research, Osaka University
  • Ohnuma Akira
    Catalysis Research Center, Hokkaido University Institute for the Advancement of Higher Education, Hokkaido University
  • Ohtani Bunsho
    Catalysis Research Center, Hokkaido University
  • Kozawa Takahiro
    The Institute of Scientific and Industrial Research, Osaka University

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Nanoparticles have unique, size-dependent properties associated with magnetic, photonic, chemical, and electrical behavior, which are different from the properties in their respective bulk materials. Those properties can be controlled through the immobilization of nanoparticles on an appropriate substrate. Therefore, it is essential to construct ordered structure of the nanoparticles on solid substrate. We succeeded in the the controlled array of silver (Ag) nanoparticles on the resulting water-soluble dithiol self-assembled monolayer (SAM) nanopatterns such as line and space and dots. Spherical Ag nanopartcles were arrayed above gold nanopatterns with a gap distance of a few nanometers supported by water-soluble dithiol. The difference in attachment behavior of Ag nanoparticle between two kinds of dithiol SAMs was clearly observed.

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