Physics of complex electromagnetic materials, Analytical and numerical modelling of metamaterials and metasurfaces, Homogenization and effective medium models, Fabrication and experimental characterization of metamaterials, Nonlinear, tunable, reconfigurable, and programmable metamaterials and metasurfaces, Time-space modulated structures, Active and absorption-free metamaterials, Chiral and bianisotropic composites, Metamaterials with extreme parameters, Quantum and superconducting metamaterials, Carbon nanotubes, graphene and other 2D materials, Nonreciprocal and topological metamaterials, Multiscale metamaterials, Plasmonics, Photonic crystals and EBG structures, Antenna and absorber applications of metamaterials, RF and microwave metamaterials: design, properties, applications, Metamaterials for 5G applications, Millimeter wave/THz metamaterials and applications, Optical metamaterials and their applications, Acoustic metamaterials, Mechanical and elastic metamaterials, Metamaterials for nanoelectronics, nanophotonics and nanoantennas, Metamaterials for control of heat flow and radiation, Metamaterials for quantum electronics, Metamaterials for sensing, Metamaterials in naval and aeronautic applications, Biological and biomedical applications of metamaterials, Super-resolution and near-field imaging: effects and devices, Transformational electromagnetics, elastodynamics, hydrodynamics and thermodynamics, Advances in cloaking and invisibility, Metamaterials in education