Editorial to the topical issue “Advanced Metamaterials in Microwaves, Optics and Mechanics”

This editorial inaugurates the first edition of the Special Issue of the Metamaterials’ Congress published on EPJ Applied Metamaterials. The special issue was born by a partnership between the Editor in Chief of EPJ-Applied Metamaterials – Prof. Yang Hao – and the Congress General Chairs – Profs. Filiberto Bilotti and Andrea Alu. The 15 extended papers available in this first edition have been selected among over 420 contributions accepted at the Metamaterials’2015 Congress with the aim to provide a representative sample of the scientific topics dealt during the days of the Congress in the city of Oxford at United Kingdom.