Figure of Merit Enhancement of a Surface Plasmon Resonance Sensor Using a Low-Refractive-Index Porous Silica Film

被引：86

作者：

Meng, Qing-Qing ^{[1
]}

Zhao, Xin ^{[1
]}

Lin, Cheng-You ^{[1
]}

Chen, Shu-Jing ^{[2
]}

Ding, Ying-Chun ^{[1
]}

Chen, Zhao-Yang ^{[1
]}

机构：

[1] Beijing Univ Chem Technol, Coll Sci, Beijing 100029, Peoples R China

[2] China Univ Geosci Beijing, Sch Mat Sci & Technol, Beijing 100083, Peoples R China

来源：

SENSORS | 2017年 / 17卷 / 08期

基金：

中国国家自然科学基金; 国家重点研发计划;

关键词：

surface plasmon resonance sensor; figure of merit; porous silica; low-refractive-index; ZNO THIN-FILM; SENSITIVITY-ENHANCEMENT; GRAPHENE; PERFORMANCE; BIOSENSOR; PRISM;

D O I：

10.3390/s17081846

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

In this paper; the surface plasmon resonance (SPR) sensor with a porous silica film was studied. The effect of the thickness and porosity of the porous silica film on the performance of the sensor was analyzed. The results indicated that the figure of merit (FOM) of an SPR sensor can be enhanced by using a porous silica film with a low-refractive-index. Particularly; the FOM of an SPR sensor with 40 nm thick 90% porosity porous silica film; whose refractive index is 1.04 was improved by 311% when compared with that of a traditional SPR sensor. Furthermore; it was found that the decrease in the refractive index or the increase in the thickness of the low-refractive-index porous silica film can enlarge the FOM enhancement. It is believed that the proposed SPR sensor with a low-refractive-index porous silica film will be helpful for high-performance SPR sensors development.

引用

页数：11

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