Optical Cloaking with Non-Magnetic Metamaterials
  Artificially structured metamaterials have enabled unprecedented flexibility in manipulating electromagnetic waves and producing new functionalities, including the cloak of invisibility based on coordinate transformation. Here we present the design of a non-magnetic cloak operating at optical frequencies. The principle and structure of the proposed cylindrical cloak are analyzed, and the general recipe for the implementation of such a device is provided. The cloaking performance is verified using full-wave finite-element simulations. 
Wenshan Cai, Uday K. Chettiar, Alexander V. Kildishev and Vladimir M.   Shalaev