http://www.popularmechanics.com/technology/news/a17386/invisibility-cloak-xingjie-ni-pennsylvania-state-university/When it comes to developing a working invisibility cloak, we may not be at Harry Potter level yet, but today's newest breakthrough is nonetheless impressive. A team of researchers led by Xingjie Ni—a nano-engineer at Pennsylvania State University—have just unveiled a fascinating invisibility cloak: one that takes the form of a sleek skin of nano-material. While other scientists have recently made headway building bulky and mechanically complex attempts at concealing screens, Ni's is far and away the thinnest and most cloak-like. At 80 nanometers thick, the skin-like material is 1,000 times thinner than a human hair—just twice the width of a flu virus. Their results are published today in the journal Science. "With our new design we have made it possible to hide a small, 3D object of any arbitrary shape, and have it appear completely flat," says Ni. As well, Ni and his colleagues claim that while testing their invention, they have actually performed the first-ever feat of concealing a random 3D shape in visible light.
