研究目的
Investigating the performance enhancement of surface plasmon resonance biosensors based on noble metals-graphene-WS2 at visible and near-infrared wavelengths.
研究成果
The study concludes that the proposed biosensors have better performance in near-infrared wavelengths than in visible wavelengths. The best angular sensitivity and FOM were achieved with the optimized structure. Increasing the number of graphene layers improves absorption, while increasing WS2 layers enhances sensitivity.
研究不足
The study is limited to the visible and near-infrared wavelengths and specific materials (gold, silver, copper, graphene, WS2). The performance is evaluated based on simulations and optimization, not experimental validation.
1：Experimental Design and Method Selection:
The study uses the Kretschmann configuration for surface plasmon resonance biosensors, incorporating metals, graphene, and WS2 layers. The PSO method is applied for optimization.
2：Sample Selection and Data Sources:
The study investigates metals (gold, silver, copper), graphene, and WS2 layers at wavelengths of 633 nm, 660 nm, and 785 nm.
3：List of Experimental Equipment and Materials:
BK7 prism, metals (gold, silver, copper), graphene, WS2 layers.
4：Experimental Procedures and Operational Workflow:
Reflectivity is calculated using the ABCD transfer matrix method. The PSO method is used to optimize reflectivity in terms of structural parameters.
5：Data Analysis Methods:
The study analyzes the sensitivity, FWHM, and FOM of the sensors.
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