Lawrence Berkeley National Laboratory
Fabrication and Optical Measurements of Nanoscale Meta-Materials: Terahertz and
- Author(s): Martin, Michael C.
- Hao, Zhao
- Liddle, Alex
- Anderson, Erik H.
- Padilla, Willie J.
- Schurig, David
- Smith, David R.
- et al.
Recently, artificial meta-materials have been reported  that have a negative index of refraction, which allows a homogeneous flat slab of the material to behave as a perfect lens , possibly even creating sub-diffraction limited focusing. These novel artificial materials have numerous potential applications in science, technology, and medicine ,especially if their novel behavior can be extended to the technologically critical near-infrared and visible region.The meta-materials consist of split-ring resonators which provide a negative m, and metal strips which provide a negative e. First steps towards scaling the dimensions of these metamaterials have been recently taken with the fabrication of split-ring resonator structures showing magnetic resonances at about1 THz  and 100 THz  frequencies.