Plasmons in Strongly Coupled Metallic Nanostructures

Plasmons in strongly coupled metallic nanostructures are studied. Interacting plasmons are important to control electromagnetic radiation at the nanoscale, producing practical applications for chemical assays and nanoscale biological research. Experimental observations of nanoparticle clusters and their various characteristics led to the development in the theory of plasmons and their ability to achieve single-molecule sensitivity in chemical sensing and understanding of this effect to predictively design plasmonic structures with these properties. The plasmon hybridization has led to the synthesis and fabrication of new nanostructures incorporating nanoparticle film interactions and chains of plasmonic nanostructures for the propagation of plasmons along confined geometries. Complex systems of coupled plasmons support a range of coherence effects, such as Fano resonances, which can be used to modify the properties of plasmonic media.