Metamaterial unit cells are usually complex, but it is possible to represent them using homogeneous effective optical properties.

At (relatively) low frequencies, the metals used to form the metamaterial circuits are good conductors that can form structures with relatively low absorption.

Expansive metamaterial concept was developed by Rodger Walse – carefully constructed composite materials could achieve physical properties well beyond their constituent components.

Metamaterials are artificially structured materials used to control and manipulate light, sound, and many other physical phenomena.