Highly Sensitive Plasmon Refractive Index Sensor Based on MIM Waveguide

被引：0

作者：

Jiang, Wen ^{[1
,2
,3
]}

Yan, Shubin ^{[2
,3
]}

Yan, Xiaoran ^{[2
]}

Xu, Aiwei ^{[2
]}

Liu, Guang ^{[2
]}

Wang, Chong ^{[2
]}

Li, Lei ^{[1
,2
,3
]}

Mu, Xiangyang ^{[1
]}

Gao, Guowang ^{[1
]}

机构：

[1] Xian Shiyou Univ, Sch Elect Engn, Xian 710065, Peoples R China

[2] Zhejiang Univ Water Resources & Elect Power, Sch Elect Engn, Hangzhou 310018, Peoples R China

[3] Zhejiang Belarus Joint Lab Intelligent Equipment &, Hangzhou 310018, Peoples R China

来源：

MICROMACHINES | 2024年 / 15卷 / 08期

基金：

中国国家自然科学基金;

关键词：

Fano resonance; plasmon refractive index nanosensor; finite element method (FEM); sensitivity; figure of merit (FOM); FANO RESONANCE;

D O I：

10.3390/mi15080987

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

This paper introduces a novel plasmon refractive index nanosensor structure based on Fano resonance. The structure comprises a metal-insulator-metal (MIM) waveguide with an inverted rectangular cavity and a circle minus a small internal circle plus a rectangular cavity (CMSICPRC). This study employs the finite element method (FEM) to analyze the sensing characteristics of the structure. The results demonstrate that the geometrical parameters of specific structures exert a considerable influence on the sensing characteristics. Simulated experimental data show that the maximum sensitivity of this structure is 3240 nm/RIU, with a figure of merit (FOM) of 52.25. Additionally, the sensor can be used in biology, for example, to detect the concentration of hemoglobin in blood. The sensitivity of the sensor in this application, according to our calculations, can be 0.82 nm center dot g/L.

引用

页数：13

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