“…A lot of interesting phenomena have been observed with NP arrays such as the formation of out‐of‐plane SLRs, the coupling between bright and dark SLRs, the confinement of surface plasmon polaritons, and the observation of undefined momentum caused by imperfections . Owing to the suppressing of radiative losses and the formation of high Q‐factor resonances, the light‐matter interactions can be enhanced dramatically, and SLRs have been widely used for enhanced non‐linear effects, biosensing, narrow‐band absorbers, strong coupling effects, enhanced fluorescence, metalens, information encoding, nanolasing and Bose–Einstein condensation . At the same time, with the increasing demanding for integration and miniaturization of modern photonic devices, a metasurface possessing multiple SLRs is more suitable to fulfill such a requirement, where wavelength multiplexing responses can be observed, and radiative losses are suppressed around several spectral positions simultaneously .…”