Berkeley Lab Researchers came out with a groundbreaking invention that sounds like something from a sci-fi movie – an invisibility cloak.
The cloak is made of near-microscopic brick-shaped gold nano antennas. It works almost as a perfectly flat mirror by reflecting light in such a way that makes it seem like the cloak and the 3D object it’s hiding have vanished, even the edges.
According to the Inhabitat‘s report:
Imagine a cloak made from thousands or perhaps millions of tiny [light-reflecting] mirrors. What is behind a mirror remains hidden because the mirror replaces what the viewer observes with a reflection. Most modern attempts run into some problems, especially around the edges of objects, where the tiny mirrors can bend light or reflect it back in colors, similar to a prism. The new development is made from a 50-nanometer-thick layer of magnesium fluoride topped with tiny, brick-shaped gold antennas, each 30 nanometers thick. With an average human hair measuring about 100,000 nanometers wide. Due to its thinness and flexibility, the cloak can be draped over any object, and it can be fine-tuned to match virtually any background.