New design principles for nanoplasmonics

During the last year, innovative designs that exploit the strong dependence of plasmonic modes on geometry have been proposed, offering new prospects on the tailoring of the optical properties of metal nanoparticles. On one hand, Fano resonances enable the opening of a narrow spectral window where light scattering is strongly inhibited. On the other hand, transformation optics makes possible the transfer of capabilities from infinite to finite systems, which leads to an efficient nanoconcentration of broadband radiation in nanostructures.