研究目的
Investigating the design and performance of a tunable triple-band graphene refractive index sensor with good angle-polarization tolerance for label-free biomedical sensing.
研究成果
The designed graphene sensor exhibits high sensitivity (up to 11.56 μm/RIU) and good angle-polarization tolerance, making it suitable for label-free biomedical sensing. The sensing range can be adjusted by controlling the graphene doping level, offering flexibility in applications.
研究不足
The study is theoretical and based on simulations; practical implementation may face challenges in fabrication and environmental stability.
1：Experimental Design and Method Selection:
The study involves designing a graphene sensor composed of elliptic-circular nanodisk resonators on a dielectric substrate, using finite difference time domain (FDTD) method for simulations.
2：Sample Selection and Data Sources:
The geometric parameters of the graphene structure are fixed, with variations in the refractive index of the surrounding medium and doping level of graphene.
3：List of Experimental Equipment and Materials:
Graphene elliptic-circular nanodisk resonators, dielectric substrate.
4：Experimental Procedures and Operational Workflow:
Transmission spectra are calculated under normal incident excitation with variations in refractive index and doping level.
5：Data Analysis Methods:
Sensitivity and figure of merit (FOM) are calculated to evaluate sensor performance.
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