Metasurface Engineering with Tantalum Pentoxide-Coated Microspheres: Tailoring Optical Resonances and Enhancing Local Density of States

Alexandra Fălamaş, Ana Maria M. Gherman, Renaud Vallée +1

Hexagonally-packed polystyrene microsphere monolayers coated with tantalum pentoxide (Ta${}_2$O${}_5$) form scalable dielectric metasurfaces that support tunable photonic resonances an…