[15p-K305-1~14] 3.1 Basic optics and frontier of optics

3:45 PM - 4:00 PM JST(6:45 AM - 7:00 AM UTC)

[15p-K305-9] Surface Plasmon Resonance of Ag Nanofilm Surface Modified with SnO₂ Layer

〇(M1)Reito Suzuki¹, Atsushi Sugita¹, Kei Hosomi¹ (1.Shizuoka Univ.)

Keywords:

Surface Plasmon Resonance,Surface Modified

This paper reports Surface Plasmon (SP) resonance behavior of Ag film coated with SnO₂ layer and its protection against surface modification by sulfur and hydrocarbon components in the air atmosphere. The SnO₂ layer was grown in Na₂SO₃ solution by wet method. The reflection spectroscopy showed that the SP resonance behavior of the SnO₂-coated Ag film was essentially the same as that of the bare Ag film. This means that the Ag surface was protected as expected by the introduction of the SnO₂ layer. The protection provided by the SnO₂ layer against the surface modification persisted for several days after sample preparation. The chemical state studied by XPS method and the surface morphology observed by AFM method are also reported.