研究目的
Investigating the multiple Fano resonances characteristics of Surface Plasmonic Polaritons (SPPs) subwavelength structure for the design of high sensitive refractive index sensors.
研究成果
The proposed MIM waveguide structure demonstrates high sensitivity to refractive index changes and the ability to independently tune Fano resonance peaks by adjusting structural parameters. The maximum refractive index sensitivity reaches 1600 nm/RIU with a FOM of up to 193.00, indicating significant potential for designing highly sensitive micro-nano sensors.
研究不足
The study is limited by the inability to manufacture nanoscale materials and the lack of a microwave chamber for measuring transmission spectra, relying solely on simulation methods.
1：Experimental Design and Method Selection:
The study employs a single baffle metal-insulator-metal (MIM) waveguide coupled with a semi-circular cavity and a cross-shaped cavity to investigate multiple Fano resonances. The theoretical models used include the multimode interference coupled mode theory (MICMT) and finite element method (FEM) for simulation.
2：Sample Selection and Data Sources:
The study focuses on the simulation of SPPs propagation in MIM structures, with parameters set based on theoretical models and previous research findings.
3：List of Experimental Equipment and Materials:
The study utilizes COMSOL software based on FEM for simulation, with specific geometric parameters of the structure defined for analysis.
4：Experimental Procedures and Operational Workflow:
The study involves simulating the transmission spectra of the proposed structure under varying structural parameters and refractive indexes to analyze the influence on sensing characteristics.
5：Data Analysis Methods:
The study uses MICMT and FEM to analyze the transmission spectra, focusing on the refractive index sensitivity and Figure of Merit (FOM) values.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容
