Decay rates near layers of Au nanospheres

The decay rate of quantum emitters near a layer of Au nanospheres is studied in the framework of a Green's tensor formalism. The localized surface plasmons that can be excited on the gold spheres provide a strong avenue for transporting the energy from the donors to the acceptors. The effect of the layer when compared to a single sphere depends on the concentration and distance in a non-trivial way, having a maximum at a finite distance.