Liu-Yang Zhang

Multiple quasi‑BIC excitations and refractive index sensing in dielectric metasurfaces enabled by symmetry breaking

In this work, an all-dielectric metasurface employing symmetry-breaking engineering is designed to support multiple quasi-BIC (quasi-BICs) for refractive index sensing applications. The unit cell is composed of two silicon elliptical nanopillars, a centrally positioned rectangular nanobar, and a symmetrically etched sl...