magneto-electric double fano resonances in hybrid split ring/disk hetero-cavity

In this work, we conceive and demonstrate the magneto-electric double fano resonances of a hetero-cavity composed of si disk and au split ring, where si disk can provide additional magnetic responses besides electric responses. the interference between electric and magnetic responses in proposed hetero-cavity gives rise to magneto-electric double fano resonances with magnetic and electric near-field enhancements. dipole radiative enhancement is used to analyze magnetic and electric responses of hetero-cavity and the spectral features of hetero-cavity can be used to quantitatively characterize by coupled oscillator model. and the spectral tunability of magneto-electric double fano resonances is investigated, highlighting a potential for applications in low-loss sensing and nanophotonic devices.