Bilayer and Multilayer Moiré Plasmonic Lattices

Plasmonic nanoparticle lattices can provide a platform for both deep-subwavelength light confinement and strong far-field scattering. However, previous studies mostly focused on how a single layer of a lattice can control the flow of light. This talk describes how bilayer and multilayer plasmonic lattices enable unique optical properties. Superimposing two or more periodic structures resulted in moiré superlattice patterns. We demonstrated that bilayer superlattices combined with dipole emitters can facilitate the engineering of light-emitting characteristics. In addition, we revealed the coupling mechanism in three-layer moiré structures.