When we were kids we all fantasized never with an invisibility cloakEven when we were older, we would also want to use it at some point. Until now, this gift was reserved for films and series that we watched with the desire to be like that magician or that superhero. But a group of engineers from the Faculty of Science at Donghua University (China) decided that it was the moment when fiction crosses the screen and successfully created a prototype invisibility cloak, using science and not magic.
It has been almost a month since Chu Junhao, physicist and director of the faculty, presented this curious innovative and original advance during a a scientific event organized in Shanghai.
As if it were the Harry Potter film, during the presentation the prestigious academic referred to to the project as “a cloak of invisibility”, with the collaboration of two assistants, Junhao took the stage to demonstrate the effectiveness of the invention. The crux of the problem fell on an initially translucent sheet, and her legs were visible from behind in a blur. But the “magic of science” only happened when the assistants turned the sheet 90° and “voila”, the physicist’s legs disappeared.
As Junhao himself explains, “invisibility” is produced thanks to this sheet composed of a grid made up of tiny convex cylindrical lenses what they get change the direction of light by making the images behind them too small to be noticeable for the human eye.
An invention that immediately takes us back to the Harry Potter films, and the invisibility cloak, one of the three most closely guarded mortal relics. For the moment the invisibility cloak will remain inaccessible because it is a project developed by the university, but in the future: ““Everyone will have the Harry Potter Invisibility Cloak in their closet,” said its creator.