All-dielectric bulk isotropic double-negative metamaterials

We propose the design of all-dielectric isotropic micro- or nanopartides which, when used as structural elements of a metamaterial, can simultaneously provide negative effective electric permittivity and negative magnetic permeability. The particles comprise three dielectric layers with specially adjusted parameters that ensure simultaneous excitation of the electric and magnetic Mie dipole modes. The layer parameters were found by Mie scattering analysis and then verified by the simulations, which confirmed the double-negative behavior of the metamaterial at up to visible light frequencies. The isotropy of such particles suggests the possibility of using them in a double-negative liquid metamaterial. (C) 2020 Optical Society of America

Automated summary

The proposed design involves all-dielectric isotropic micro- or nanoparticles that can provide negative effective electric permittivity and negative magnetic permeability when used as structural elements of a metamaterial. By adjusting parameters of three dielectric layers, the particles can excite electric and magnetic Mie dipole modes simultaneously. The isotropy of the particles suggests the potential use in a double-negative liquid metamaterial.