研究目的
Investigating the effects of disorder within artificially structured metamaterials on their optical properties and the propagation of surface plasmons.
研究成果
The study demonstrates that disorder in metamaterials can significantly affect the propagation characteristics of surface plasmons, offering flexibility in designing tunable plasmonic properties. The findings are significant for understanding plasmonic properties in metamaterials and designing metamaterial-based optoelectronic devices.
研究不足
The study is limited to theoretical analysis and simulation, with potential technical constraints in fabricating disordered metamaterials with precise control over disorder parameters. The experimental validation of the theoretical models is not covered.
1：Experimental Design and Method Selection:
The study explores three models of disordered metamaterials: rotational disorder, sliding disorder, and positional disorder. Theoretical models and effective medium approximation are employed to analyze the dispersion relations of surface plasmons.
2：Sample Selection and Data Sources:
The study uses nanobeam composites and nanowire metamaterials as samples, with parameters such as permittivity and metal fill fraction ratio defined for analysis.
3：List of Experimental Equipment and Materials:
Nanobeams with permittivity εm embedded into a host material with permittivity εd, and metallic or semiconductor nanowires are used.
4：Experimental Procedures and Operational Workflow:
The study involves calculating the dispersion relations for surface modes localized at the interface between anisotropic media, evaluating the tangential components of the electric and magnetic fields at the interface.
5：Data Analysis Methods:
The analysis includes fitting dielectric functions to bulk dielectric data and using effective medium theory to evaluate effective permittivities.
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