A Gaussian-shaped pulse propagates on the patterned metal with a sharp bump. (Top) When there is no cloak, most pulse energy is scattered at the bump. (Middle) When the carpet cloak hides the bump, the pulse can be perfectly guided around the bump. (Bottom) A pulse propagates on a straight patterned metal as a reference.
Su Xu, Hongyi Xu, Hanhong Gao, Yuyu Jiang, Faxin Yu, John D. Joannopoulos, Marin Soljačić, Hongsheng Chen, Handong Sun, and Baile Zhang
PNAS. 2015. DOI: 10.1073/pnas.1508777112