multispectral plasmon-induced transparency based on asymmetric metallic nanoslices array metasurface

We propose a 3d metasurface structure with unsymmetrical metallic slices array. the tunable plasmon-induced transparency (pit) effects and different electric field mode distributions could be realized by modulating the structure parameters and angle of incidence. the radiative and dark elements of the asymmetric metallic slices unit cell structure are analyzed. the transmission spectra and the electric fields distributions are studied by the finite element method (fem). we demonstrate that pit phenomena based on those metasurface array structures have applications as tunable sensors and filters in nanophotonics and integrated optics.