研究目的
Investigating the design of a plasmonic platform to improve the sensitivity of surface enhanced Raman spectroscopy (SERS) for molecular detection.
研究成果
The proposed plasmonic platform based on gold nanostars (LPNs and SPNs) offers a high SERS intensity enhancement of 85% compared to platforms without SPNs. The design improves sensitivity in the near infrared and visible regions, making it suitable for molecular detection applications.
研究不足
The study is limited to theoretical simulations and does not include experimental validation. The smallest physically meaningful distance between small plasmonic nanostars (SPNs) is limited to 0.5 nm, where optical responses still obey Maxwell’s theory.
1：Experimental Design and Method Selection:
The study utilized the finite element methods (FEM) with numerically stable edge element discretization and solutions of Maxwell’s equations using COMSOL Multiphysics software.
2：Sample Selection and Data Sources:
The simulation was based on a plasmonic platform composed of gold nanostars (LPNs and SPNs) on a glass substrate.
3：List of Experimental Equipment and Materials:
COMSOL Multiphysics? Modeling Software was used for simulations.
4：Experimental Procedures and Operational Workflow:
The study involved simulating the absorption spectrum and SERS intensity enhancement for different configurations of the plasmonic platform.
5：Data Analysis Methods:
The analysis focused on the enhancement factor and sensitivity of the plasmonic platform to refractive index variations.
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