A 3-D illustration of a metasurface skin cloak made from an ultrathin layer of nanoantennas (gold blocks) covering an arbitrarily shaped object. Light reflects off the cloak (red arrows) as if it were reflecting off a flat mirror. Credit: Xiang Zhang group, Berkeley Lab/UC Berkeley
Read more at: http://phys.org/news/2015-09-d-ultrathin-invisibility-cloak.html#jCp