研究目的
Investigating the enhancement of sensitivity in plasmonic refractive index sensors by dividing disk-shaped nanoparticles into smaller components.
研究成果
The proposed technique of dividing disk-shaped nanoparticles into smaller components significantly enhances the sensitivity of plasmonic refractive index sensors, with a demonstrated improvement from 300 nm/RIU to 500 nm/RIU and an increase in FOM from 5.95 to 7.69.
研究不足
The study is limited to simulations using the FDTD method, and practical implementation may face challenges in manufacturing and stability of the proposed nanostructures.
1：Experimental Design and Method Selection:
The study uses the finite difference time domain (FDTD) method for solving Maxwell’s equations and calculating the extinction spectra of nanostructure arrays.
2：Sample Selection and Data Sources:
Arrays of disk-shaped golden nanoparticles are used, with variations in their division into smaller components.
3：List of Experimental Equipment and Materials:
Golden and silver nanoparticles, glass substrate, silicon layer, and liquid with varying refraction coefficients.
4：Experimental Procedures and Operational Workflow:
Simulation of nanostructures with varying divisions and materials to observe plasmon resonance and sensitivity changes.
5：Data Analysis Methods:
Calculation of extinction spectra, sensitivity (S = Δλ/Δn), and figure of merit (FOM = S/FWHM).
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