Collective Effects on Periodic Arrays of Plasmonic Nanostructures
April 1st, 2019 ALEJANDRO MANJAVACAS University of New Mexico

Abstract: Periodic arrays are an exceptionally interesting arrangement for plasmonic nanostructures due to their ability to support strong collective lattice resonances arising from the coherent multiple scattering enabled by the array periodicity. Thanks to these exceptional properties, periodic arrays are being exploited in a wide variety of applications, including ultrasensitive biosensing, nanoscale light emission, and color printing, to cite a few. In this talk, we will discuss the response of arrays with multi-particle unit cells using an analytical approach based on plasmon hybridization, which provides a simple an efficient way to design periodic arrays with engineered properties. We will also discuss how the interplay between the response of the individual constituents and the collective interaction determines the ultimate limits of the field enhancement provided by these systems. We will finish by addressing the effect that the presence of edges as well as disorder have on the response of these systems.

Seminar, April 1, 2019, 12:00. ICFO’s Seminar Room

Hosted by Javier García de Abajo