Electromagnetic Metamaterials and Metasurfaces: A historical journey

In this article, we embark on a historical journey through the development of radio-frequency (RF) metamaterials (MTMs) and metasurfaces (MTSs), tracing their evolution from theoretical concepts well before the name was coined. Along the way, we explore key milestones, breakthroughs, and the profound impact of these engineered materials on antennas, microwaves, and beyond.