Duke University Creates Invisibility Cloak That Hides Objects With Near Perfection

Most of the Harry Potter fans can't get the image of the first look of the Invisibility Cloak out of their minds. The fantasy lands are full of stories about cloaks that have never failed to intrigue the common man and the scientists alike. Putting their best foot forward, Duke University Scientists have went on to create the first invisibility cloak that perfectly hides centimeter-scale objects. Our team at CE, has reported about different kinds of #-Link-Snipped-# from time to time. So, what's new about this creation? Well, all the invisibility cloaks created till date would reflect some of the incident light, thus ruining the illusion. But, this one from the Duke's channels the incident light perfectly around the object and we achieve a near perfect invisibility.
However interesting that may sound to you right now, the truth is that the cloak still doesn't make things invisible in visible light. The Duke invisibility cloak only works under microwave radiation and works unidirectionally. Made out of tweaked metamaterial, this cloak uses negative refractive index to bend the microwaves around objects. Therefore you see what’s behind the object, instead of the object itself.
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The Duke scientists have reported that their technology could perfectly hide 3×0.4-inch (7.5x1cm) cylinder from microwave radiation. Yes, you can now go and think about all those cool stealth vehicles and micro-vehicles that could be used in defense mechanisms. The best part is that there is no looking back now - The team at Duke University is already looking forward to creating an omnidirectional, 3D microwave invisibility cloak. What applications can you think of when you read about the developments in invisibility? Do share with us in comments.
Via: Duke University creates perfect, centimeter-scale invisibility cloak | ExtremeTech