Three-dimensional self-assembly of metal nanoparticles: Possible photonic crystal with a complete gap below the plasma frequency - art. no. 113108

We study theoretically the optical properties of a three-dimensional self-a ssembly of spherical-metal nanoparticles. Our band-structure calculations s how that photonic band gaps in near infrared and optical frequencies can be realized in a fcc lattice of metal particles with radii of approximately 1 60 nm. When absorption is taken into account. we found that the gap is pres erved in good metals like silver. The metal nanoparticles can be replaced b y dielectric spheres coated with a layer of good metal.