The development of metamaterials is to combine artificial composites with different electromagnetic response properties according to specific rules. The properties of these materials are not only determined by the material itself, but also closely related to the shape, size, arrangement and combination of its structure. By changing the structure and size of the key locations of metamaterials, people can achieve arbitrary bending and fine reduction of light waves, radar waves, radio waves, sound waves and even seismic waves like building blocks. For example, with the help of a thin layer of metamaterial that allows light to bypass the object, researchers began to study the invisibility cloak that makes the object invisible.
The main content of metamaterials introduced in this paragraph is the development principle.