Infrared Dielectric Resonator Metamaterial
  We demonstrate, for the first time, an all-dielectric metamaterial resonator in the mid-wave infrared based on high-index tellurium cubic inclusions. Dielectric resonators are desirable compared to conventional metallo-dielectric metamaterials at optical frequencies as they are largely angular invariant, free of ohmic loss, and easily integrated into three-dimensional volumes. With these low-loss, isotropic elements, disruptive optical metamaterial designs, such as wide-angle lenses and cloaks, can be more easily realized. 
James C. Ginn, Igal Brener, David W. Peters, Joel R. Wendt, Jeffrey O.   Stevens, Paul F. Hines, Lorena I. Basilio, Larry K....
physics.optics