Influence of groove depth and surface profile on fluorescence enhancement by grating-coupled surface plasmon resonance

Hironobu Hori, Keiko Tawa, Kenji Kintaka, Junji Nishii, Yoshiro Tatsu

研究成果: ジャーナルへの寄稿学術誌査読

29 被引用数 (Scopus)

抄録

The fluorescence intensity of a sample placed on a metal grating pattern is enhanced due to excitation by the electric field of the grating-coupled surface plasmon resonance (GC-SPR). The dependence of the enhancement on groove depth and surface profile was studied with the aim of improving the sensitivity of fluorescence detection. The enhancement was found to depend on the groove depth, with intensity most enhanced on grating substrate of about 20 nm depth, which produced an intensity about 30 times greater than that on a flat borosilicate glass substrate. Rigorous coupled wave analysis calculation showed that the shape of the groove influenced GC-SPR, suggesting that controlling not only the depth but also the shape of the grating surface profile can be an important factor in improving the sensitivity of detection by fluorescence microscopy.

本文言語英語
ページ(範囲)216-221
ページ数6
ジャーナルOptical Review
16
2
DOI
出版ステータス出版済み - 3月 2009
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • 原子分子物理学および光学

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