Dispersive and scattering properties of multilayer arrays made of plasmonic nanoparticles

摘要

We analytically study, in the homogenization regime, the dispersive and transmission properties of periodic multilayer arrays of subwavelength metal particles embedded in a dielectric medium. Far from the intrinsic plasmonic resonance of the individual nanoparticles, these structures behave similarly to conventional Bragg reflectors. At the plasmonic resonance, a different type of Bragg gap is formed with peculiar dispersive and tunneling properties.