Fano resonance on plasmonic nanostructures

We present the Fano resonance effects of plasmonic nanoparticles in the optical domain. An intuitive explanation on the physical nature of fano resonance based on the three-level quantum system is presented. The Fano resonance effects of three basic nanoparticle arrangements, namely quadrumer, pentamer and heptamer are discussed. The mass spring model of quadrumer, pentamer and heptamer are presented. The calculated results from mass spring model are found to be in agreement with the calculated results from CST Microwave Studio result.