3D-Chiral Metamaterial Showing Artificial Magnetic Response and Negative   Refraction
  Artificial magnetism, negative permeability and negative refractive index are demonstrated in 3D-chiral metamaterial that shows giant polarization rotation and circular dichroism. 
E. Plum, J. Dong, J. Zhou, V. A. Fedotov, T. Koschny, C. M. Soukoulis   and N. I. Zheludev