研究目的
To present a spectral analysis of a nanodipole array above a graphene layer by the Periodic Green’s Function method, evaluating the influence of chemical potential on the absorbance and electromagnetic fields, and comparing the model based on impedance condition with a formulation that considers graphene with a finite thickness.
研究成果
The spectral analysis verified the graphene dispersion characteristic as a function of frequency, chemical potential, and dipoles concentration in the array. The emergence of the SPP pole and its contribution in the space domain were observed. The proposed model by surface impedance was consistent with an approach that considers graphene with a finite thickness, showing identical field profiles with a small difference close to the graphene layer.
研究不足
The study is limited to the spectral analysis of a nanodipole array above a graphene layer using the PGF method. The comparison between the surface impedance model and the finite thickness model shows a small difference close to the graphene layer, indicating a potential area for further optimization.
1：Experimental Design and Method Selection:
The study uses the Periodic Green’s Function (PGF) method for spectral analysis of a nanodipole array above a graphene layer. Graphene is modeled as a surface impedance with conductivity described by the Kubo model.
2：Sample Selection and Data Sources:
The structure under analysis is a periodic array of nanodipoles uniformly distributed above a graphene layer deposited on a silicon dioxide (SiO2) substrate.
3：List of Experimental Equipment and Materials:
MATLAB software for generating parametric results.
4：Experimental Procedures and Operational Workflow:
The Green’s function is obtained by the complex two-dimensional Fourier series transform, with impedance condition at the interface between the dielectric media. A parametric analysis of the influence of chemical potential on the absorbance and the electromagnetic fields in the spectral domain is performed.
5：Data Analysis Methods:
The dispersion characteristic of graphene is verified, and the emergence of the Surface Plasmon Polariton (SPP) pole in the spectral representation is investigated.
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