` Sensitive surface plasmon resonance biosensor enhanced by photonic-crystal metallic structure

被引:0
作者
Wang, Fang
Chen, Chaoying
Fang, Junbin
Peng, Shuihua
Yu, J. H.
Zhang, Jun
Tang, Jieyuan
Lu, Huihui
Chen, Zhe [1 ]
Luo, Yunhan
机构
[1] Jinan Univ, Key Lab Optoelect Informat & Sensing Technol Guan, Guangdong Higher Educ Inst, Guangzhou 510632, Guangdong, Peoples R China
来源
23RD INTERNATIONAL CONFERENCE ON OPTICAL FIBRE SENSORS | 2014年 / 9157卷
关键词
surface Plasmon resonance; photonic crystal metallic; surface plasmons; full width half maximum (FWHM); minimum reflectance; sensitivity; FOM;
D O I
10.1117/12.2059592
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
In this paper, we propose and analytically demonstrate a novel photonic crystal metallic structure, where a photonic crystal (PC) structure is integrated in a total-internal-reflection (TIR) geometry. This unique configuration introduces a new plasmon excitation mechanism, and the excited plasmon modes satisfy the conditions for both resonance modes in PC structure and Plasmon modes in the metallic structure, which makes it possesses a narrow resonance width, smaller minimum reflectance and higher sensitivity comparing with the conventional SPR sensor. The novel and sensitive PC-metallic biosensor will serve as a promising choose for optical biosensing, and in enhanced total-internal-reflection fluorescence microscopy (TIRFM).
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收藏
页数:4
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