Gap-Size-Dependent Effective Phase Transition in Metasurfaces of Closed-Ring Resonators

Gap-Size-Dependent Effective Phase Transition in Metasurfaces of Closed-Ring Resonators

Blog Article

We theoretically investigate a metal-to-insulator transition in artificial two-dimensional (2D) crystals (i.e., Chamomile Flower metasurfaces) of tightly coupled closed-ring resonators.Strong interaction between unit resonators in the metasurfaces yields the effective permittivity highly dependent on the lattice spacing of unit resonators.

Through our rigorous theory, we provide a closed form of effective permittivity of the metasurface and reveal that the permittivity Collections possesses a Lorentzian-type resonant behavior, implying that the transition of the effective permittivity can arise when the lattice spacing passes a critical value.