Source: wikibot/metamaterial-absorber
= Metamaterial absorber
{wiki=Metamaterial_absorber}
A metamaterial absorber is a type of engineered material designed to absorb electromagnetic waves, such as light or radio waves, across a broad range of frequencies. These materials are not found in nature; rather, they are constructed from arrays of small, artificially designed structures—often termed "unit cells"—that have unique properties that arise from their geometry rather than their composition.