Characteristics of SPR Sensor Based on Polymer Waveguide

ZHANG Yi-liang; WANG Jian-bin; HUANG Xiao-liang; ZHANG Dan

doi:10.3788/fgxb20133407.0948

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Characteristics of SPR Sensor Based on Polymer Waveguide

更新时间：2020-08-12

- Characteristics of SPR Sensor Based on Polymer Waveguide
- Chinese Journal of Luminescence Vol. 34, Issue 7, Pages: 948-951(2013)
- 作者机构：
  
  厦门大学信息科学与技术学院,福建厦门,361000
- 作者简介：
- 基金信息：
- DOI：10.3788/fgxb20133407.0948
  CLC： TB838.1
- Received：20 March 2013，
  
  Revised：12 May 2013，
  
  Published：10 July 2013
- 稿件说明：
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张以亮, 汪建斌, 黄晓亮, 张丹. 聚合物波导型表面等离子体共振传感器的特性研究[J]. 发光学报, 2013,34(7): 948-951

ZHANG Yi-liang, WANG Jian-bin, HUANG Xiao-liang, ZHANG Dan. Characteristics of SPR Sensor Based on Polymer Waveguide[J]. Chinese Journal of Luminescence, 2013,34(7): 948-951
张以亮, 汪建斌, 黄晓亮, 张丹. 聚合物波导型表面等离子体共振传感器的特性研究[J]. 发光学报, 2013,34(7): 948-951 DOI： 10.3788/fgxb20133407.0948.

ZHANG Yi-liang, WANG Jian-bin, HUANG Xiao-liang, ZHANG Dan. Characteristics of SPR Sensor Based on Polymer Waveguide[J]. Chinese Journal of Luminescence, 2013,34(7): 948-951 DOI： 10.3788/fgxb20133407.0948.

摘要

基于表面等离子体共振理论

将SU-8作为波导芯层材料

以聚甲基丙烯酸甲酯(PMMA)为下包层材料

设计了一款聚合物波导型SPR传感器。理论计算了波导芯层折射率、被测物折射率、不同金属薄膜及其厚度等因素对表面等离子体共振曲线的影响。分析结果表明

在可测试范围内

被测物折射率越大

灵敏度越高;波导芯层折射率减小

共振峰向长波方向移动

被测物检测范围整体向折射率小的方向偏移

波导芯层折射率增大则相反。

Abstract

A polymer waveguide sensor was designed based on the theory of surface plasmon resonance (SPR). The sensor with SU-8 polymer as the waveguide core material is fabricated on a silicon substrate with a under cladding layer of PMMA. Effect of refractive index of polymer

refractive index of analyte

the different metal

and the thickness of metal on SPR curve is analyzed. Theoretical analysis results show that the sensor sensitivity is improved with the refractive index of analyte increase. The resonance wavelengths of SPR sensor move to longwave direction when the refractive index of polymer is low

and its detection range trend to move to long refractive index. Otherwise the results are contrary.

关键词

Keywords

references

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