Potential topics include but are not limited to: • 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