The inventor, Chu Junhao, a respected infrared physicist and academician of the Chinese Academy of Sciences, presented the cloak at the Super Science Night virtual exhibition in late 2023. In a live demonstration that quickly went viral, Junhao used a square sheet of optical material that obscured his legs from view when rotated at a certain angle. The project has attracted widespread attention online, with videos showing the material in action circulating across multiple platforms.<\/p>\n
Junhao\u2019s demonstration appears to confirm that invisibility, once confined to fiction and fantasy, can now be achieved using practical science. While the effect is not absolute and depends on specific viewing angles, the development signals a step toward a future where optical camouflage becomes a functional tool with real-world applications.<\/p>\n
Real Invisibility Through Lenticular Optics<\/p>\n
At the heart of the cloak is a light-bending surface called lenticular grating. According to Global Times<\/a>, this material is made from tightly packed rows of cylindrical convex lenses. Each lens compresses the image of an object behind it into narrow vertical lines. When enough lenses are used, the object is broken into a series of repeated strips, effectively rendering it invisible to the observer standing in front.<\/p>\n Junhao explained that this principle is similar to certain forms of natural invisibility found in the animal kingdom, but refined through material science. \u201cWhether in real life or in the world of nature and animals, there is a lot of \u2018invisibility\u2019, and this is not magic\u2014it is scientific,\u201d he said during the demonstration.<\/p>\n The principle of invisibility through refractive index matching was also highlighted. For example, when a borosilicate glass object is placed in glycerol, and both materials share a similar refractive index, the object becomes nearly impossible to detect. This same idea underpins the cloak\u2019s ability to disguise objects by matching how light passes through them.<\/p>\n China has created an “invisibility cloak” called InvisDefense, developed by a team at Wuhan University. pic.twitter.com\/0xdLAKNgVp<\/a><\/p>\n \u2014 Interesting As Fuck (@interesting_aIl) October 1, 2025<\/a> <\/p>\n Social Media Erupts Over the Live Demonstration<\/p>\n Public reaction to the cloak has been both fascinated and skeptical. During the Super Science Night event, Junhao stood on stage while two assistants held the invisibility material<\/a> in front of his legs. At first, the black color of his trousers was visible through the sheet. Then, after rotating the fabric 90 degrees, the background became visible and Junhao\u2019s legs disappeared from view, creating the effect of a floating torso.<\/p>\n