Plasmonic linewidth narrowing by encapsulation in a dispersive absorbing material
It is often assumed that adding losses to a resonant system necessarily broadens the width of the resonance.Here, the scattering spectrum of gold nanoparticles in P3HT (strongly absorbing) and PMMA (low loss) were measured using dark field microscopy and surprisingly, the Facial Oil linewidth was halved in the lossy medium.To gain physical insight