1. Materials and metamaterials

We recall here the simplified diagram of the different types of electromagnetic materials according to their permeability and permittivity presented in the article [E 1 164] . That introductory article presented examples of materials corresponding to regions I, II and III. In this new article, examples of materials corresponding to region IV are presented, as well as the region represented by the red square in figure 1 . Composite materials and metamaterials enable us to...