Researchers at Singapore-MIT Alliance built invisibility cloak for large objects

Physicsworld.comGeorge Barbastathis and co-workers at the Singapore-MIT Alliance for Research and Technology (SMART) in Singapore made their cloak by gluing together two pieces of calcite with differently oriented optical axes. These orientations were fixed such that light waves with a given polarization that bounce off a wedge-shaped object placed underneath the cloak emerge travelling in the