Imagine a device that is selectively transparent to various wavelengths of light at one moment, and opaque to them the next, following a minute adjustment. Such a gatekeeper would enable powerful and ...

Bound states in the continuum (BICs) are a special class of resonant states. Although they have the same momentum and energy as the propagating modes in free space, yet they are not coupled to the ...

Bloch surface waves (BSWs) are electromagnetic modes confined at the interface between a periodic dielectric multilayer and its surrounding medium. Their low propagation losses, sharp resonance ...