Adsorption and Surface Plasmon Emission Light of Polystyrene Spheres with Fluorescent Dye on Ag Thin Film

Kazunari SHINBO; Hiroshi MIURA; Yasuo OHDAIRA; Akira BABA; Keizo KATO; Futao KANEKO

doi:10.1093/ietele/e91-c.10.1663

Special Section on Functional Thin Films for Optical Applications

Adsorption and Surface Plasmon Emission Light of Polystyrene Spheres with Fluorescent Dye on Ag Thin Film

Kazunari SHINBO, Hiroshi MIURA, Yasuo OHDAIRA, Akira BABA, Keizo KATO, Futao KANEKO

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Keywords: surface plasmon (SP), attenuated total reflection (ATR), SP emission light, polystyrene sphere

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2008 Volume E91.C Issue 10 Pages 1663-1668

DOI https://doi.org/10.1093/ietele/e91-c.10.1663

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Abstract

In this study, attenuated total reflection (ATR) utilizing surface plasmon (SP) excitation and SP emission lights were observed for the adsorption of polystyrene (PS) spheres and a water-soluble polymer. The PS spheres contained fluorescent dyes and exhibited red fluorescence. The ATR properties indicated film deposition with increasing number of adsorption cycles. The SP emission light induced by the fluorescent dye in the spheres was also measured, and an increase in the peak intensity, as well as an angle shift, was observed. Furthermore, the SP emission light spectra were investigated at various emission angles. The dispersion relation obtained from the SP emission light almost corresponded to that obtained from the ATR curves.

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