Nanoparticle Chains for Plasmonic Band Engineering

Localized Surface Plasmons (LSPs) are collective charge oscillations on the surface of nanoparticles (NPs). They can be excited at interfaces between media with opposite sign of the corresponding dielectric functions; and hence are very sensitive to the materials dielectric function ε and the particle geometry. The induced plasmonic fields are strongly enhanced and confined to the interface, which makes LSPs attractive for several applications.