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How to Make an Object Invisible

By Duncan Graham-Rowe, MIT Review

A new theoretical design using nanowires provides a way to hide devices from visible light.

A hairbrush-shaped device has been theoretically designed that would use bristles made out of nanowires to bend light around it, rendering the object invisible. The researchers who came up with the design say that it's the first practical design for an "optical cloak" to work in the visible spectrum.