These materials are known as negative-index metamaterials. Those that exhibit a negative index of refraction for particular wavelengths have been the focus of a large amount of research. ![]() Their precise shape, geometry, size, orientation and arrangement gives them their smart properties capable of manipulating electromagnetic waves: by blocking, absorbing, enhancing, or bending waves, to achieve benefits that go beyond what is possible with conventional materials.Īppropriately designed metamaterials can affect waves of electromagnetic radiation or sound in a manner not observed in bulk materials. Metamaterials derive their properties not from the properties of the base materials, but from their newly designed structures. These materials are usually arranged in repeating patterns, at scales that are smaller than the wavelengths of the phenomena they influence. They are made from assemblies of multiple elements fashioned from composite materials such as metals and plastics. ![]() Ī metamaterial (from the Greek word μετά meta, meaning "beyond" or "after", and the Latin word materia, meaning "matter" or "material") is any material engineered to have a property that is rarely observed in naturally occurring materials. ![]() Materials engineered to have properties that have not yet been found in nature Negative-index metamaterial array configuration, which was constructed of copper split-ring resonators and wires mounted on interlocking sheets of fiberglass circuit board.
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