| Abstract: | Terahertz metamaterials comprise a periodic array of resonator elements
disposed on a dielectric substrate or thin membrane, wherein the
resonator elements have a structure that provides a tunable magnetic
permeability or a tunable electric permittivity for incident
electromagnetic radiation at a frequency greater than about 100 GHz and
the periodic array has a lattice constant that is smaller than the
wavelength of the incident electromagnetic radiation. Microfabricated
metamaterials exhibit lower losses and can be assembled into
three-dimensional structures that enable full coupling of incident
electromagnetic terahertz radiation in two or three orthogonal
directions. Furthermore, polarization sensitive and insensitive
metamaterials at terahertz frequencies can enable new devices and
applications. |