Meta Materials and Meta Surfaces

Meta materials are materials which are prepared with unknown properties. They are mad by merging altered elements and if made appropriately, they can disturb the sound waves and electromagnetic radiation. They have a wide range of requirements from aerospace industry to light and sound filtering devices. Metasurface refers to a type of artificial sheet material with electromagnetic properties and sub-wavelength thickness on demand. In horizontal dimensions, metasurfaces could be either structured or not structured with sub-wavelength scrambled patterns. Metasurfaces in the electromagnetic theory could modulate the behaviors through the specific boundary conditions of electromagnetic waves. Sometimes 2D counterparts of metamaterials refer metasurfaces.