Collective Resonances of Lossy Material Nanoantennas

We analyze the multipole lattice effects on the resonant properties of periodic nanostructures and nanophotonic components made of lossy materials. The periodic arrangement of nanoscatterers facilitates the excitation of additional multipoles and allows light localization in planar photonic components. We show that our design can improve localized resonances and enhance the efficiency of the nanophotonic devices and sensors by adjusting nanoantenna periodicity in in-plane directions.