研究目的
Investigating the transition between photonic crystals and dielectric metamaterials using periodic lattices of silicon nanorods and establishing conditions for the metamaterial regime.
研究成果
The study demonstrates that silicon-based bulk metamaterials can be realized by optimizing the lattice geometry and leveraging the frequency dependence of silicon's permittivity. The hexagonal lattice is identified as an optimal choice for achieving the metamaterial regime with commonly available semiconductor permittivity values. This opens up new possibilities for designing all-dielectric Mie-resonant metadevices in the visible and near-infrared frequency ranges.
研究不足
The study is limited by the frequency-dependent complex dielectric permittivity of silicon, which complicates the analysis of bandgap diagrams. Additionally, the fabrication of silicon nanorods with high aspect ratios and precise control over their parameters is challenging.
