Humidity adsorption and surface plasmon excitation of poly(vinyl alcohol) films with fluorescent microspheres

被引：3

作者：

Kobayashi, Yutaka ^{[1
]}

Fukushima, Makoto ^{[1
]}

Baba, Akira ^{[3
]}

Ohdaira, Yasuo ^{[2
,3
]}

Shinbo, Kazunari ^{[2
,3
]}

Kato, Keizo ^{[1
,3
]}

Kaneko, Futao ^{[2
,3
]}

机构：

[1] Niigata Univ, Grad Sch Sci & Technol, Nishi Ku, Niigata 9502181, Japan

[2] Niigata Univ, Dept Elect & Elect Engn, Niigata 9502181, Japan

[3] Niigata Univ, Ctr Transdisciplinary Res, Niigata 9502181, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS | 2008年 / 47卷 / 02期

关键词：

attenuated total reflection; surface plasmon; emission light; microsphere; sensing;

D O I：

10.1143/JJAP.47.1110

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In this study, thin films of poly(vinyl alcohol) (PVA) mixed with 100 nm polystyrene (PS) microspheres were prepared, and changes in attenuated total reflection (ATR) utilizing surface plasmon (SP) excitation due to the adsorption of humidity were investigated. The PS microspheres contained luminescent dyes, and SP emission light due to these dyes was observed. The sample configuration was prism/Ag film (50 nm)/PVA film with sphere. ATR dip and SP emission peak angles shifted with the adsorption and desorption of humidity, and SP emission light intensity changed markedly. Furthermore, kinetic curves were plotted and humidity adsorption responses were repeatedly observed. Finally, the dispersion relations of SPs were obtained from ATR and SP emission light properties.

引用

页码：1110 / 1114

页数：5

共 12 条

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