Dielectric particles can behave as dual metamaterials

In this presentation, two results will be presented. First, the authors will generalize the Kerker conditions for systems with cylindrical symmetry. As it will be seen, the first Kerker condition is a particular case of a system with cylindrical and duality symmetry. In comparison, the second Kerker condition is a particular case of a system with cylindrical symmetry and with an anti-dual behaviour. A dual material is a system that is symmetric under the duality symmetry of Maxwell equation. This symmetry has been overlooked for many years, as it is always broken in the presence of charges. Nonetheless, recently it has been proved that it can be restored for the macroscopical Maxwell Equations if certain conditions are fulfilled.