Development of a TiO2/SiO2 waveguide-mode chip for an ultraviolet near-field fluorescence sensor

Chiaki Kuroda, Midori Nakai, Makoto Fujimaki, Yoshimichi Ohki

研究成果: Article査読

2 被引用数 (Scopus)

抄録

Aimed at detecting fluorescent-labeled biological substances sensitively, a sensor that utilizes near-field light has attracted much attention. According to our calculations, a planar structure composed of two dielectric layers can enhance the electric field of UV nearfield light effectively by inducing waveguide-mode (WM) resonance. The fluorescence intensity obtainable by a WM chip with an optimized structure is 5.5 times that obtainable by an optimized surface plasmon resonance chip. We confirmed the above by making a WM chip consisting of TiO2 and SiO2 layers on a silica glass substrate and by measuring the fluorescence intensity of a solution of quantum dots dropped on the chip.

本文言語English
ページ(範囲)6796-6805
ページ数10
ジャーナルOptics Express
26
6
DOI
出版ステータスPublished - 2018 3 19

ASJC Scopus subject areas

  • 原子分子物理学および光学

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