Micro invisibility cloak works in visible light
DOI: 10.1063/PT.5.029217
Los Angeles Times : An ultrathin invisibility cloak has been developed that is much less bulky than earlier such devices. Although it can hide objects only a few micrometers in size, future versions could be scaled up, according to Xiang Zhang of Lawrence Berkeley National Laboratory and colleagues, whose paper was published in Science. The device consists of a thin metamaterial covered with gold rectangles of different sizes, which act like antennas to radiate light. When light hits a three-dimensional object covered with the material, it reflects as if it were coming off a flat surface. Besides cloaking, the material could have other uses, such as altering an object’s appearance or disguising it.
