The First 'Perfect' Invisibility Cloak Completely Conceals Objects (From Microwaves)
The 'Perfect' Invisibility Cloak Nature Materials via BBCIt's not quite the visible-spectrum breakthrough we're waiting for, but invisibility science has hit a theoretical high point. A big step forward in invisibility cloaking today: Researchers have pulled off the first-ever "perfect" cloaking of an object, rending a small cylinder completely invisible while creating absolutely no reflections of incident light that might give the concealed object away. The catch? The object was centimeter-scale, and the cloaking was done in the microwave spectrum rather than in visible light. Your invisibility cloak is still on hold. But that doesn't make this any less of a breakthrough where metamaterials and cloaking are concerned. Many attempts at cloaking have been made, and many have been some degree of successful. But the original theory that led to all this cloaking science says that we should be able to cloak objects entirely, and up to this point we've failed...