Show the first ultra-thin invisibility shirt

Invisibility cloak is an indispensable item in many cult sci-fi movies, from Star Trek to Harry Potter. In real life, many scientists are also actively developing technology to realize this fascinating item.

America presents the world's thinnest invisibility cloak

US scientists have designed what they call "ultra-thin invisibility leather", able to adapt to the shape of an object and make it invisible in visible light. Currently, this cloak has just been released in very small sizes, but the principles behind this technology are expected to help increase the size of the shirt to hide larger items.

The invisible cloak of American scientists is now extremely small, only observed under a microscope.(Photo: Daily Mail).

According to a research report, using nano-gold antennas as building blocks, experts from the Lawrence Berkeley National Laboratory of the US Department of Energy and the University of California Berkeley have launched a "shirt." Leather cape " owns a thickness of only 80 nanometers, of which 1 nanometer = 1 / 1,000,000 mm.

The ultra-thin cloak is then wrapped around a 3D object about the size of a few biological cells and has a customized shape with lots of lumps and dents. The surface of the gown is designed to redirect reflected light waves, so that the object becomes invisible to the sight of the visual when covered by the cloak.

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"This is the first time a 3D object with a customized shape is completely hidden from the visible light. Our ultra-thin gown now looks like an outer coating. It is easy to design and applications as well as can increase size to hide large objects, " said researcher Xiang Zhang.

The dispersion of light, from visible to infrared and X-rays, and its interaction with matter makes it possible to detect and see objects. The rules that govern these interactions in natural materials are different from those of metamaterials, because their optical properties are derived from physical structures rather than chemical structures.

The operating principle of a leather gown helps invisible 3D objects in front of the naked eye, in visible light.(Photo: Daily Mail).

For the past 10 years, Professor Zhang and his team have tried to shatter the limits on how light interacts with metamaterials, trying to bend the path of light or break it backwards.

In the past, optical "carpet gowns" based on their metamaterials were relatively bulky and difficult to increase in size. However, their latest stealth "leather cloak" overcomes this drawback.

The team added that the "leather cloak" could also be turned on - turning off the invisibility feature simply, by turning the polarization of the nano antennas.

Currently, tiny stealth leather robes can help hide the detailed design of microelectronic components or serve security coding purposes.