Two invisibility cloak materials developed
Front Page Article
In recent years, several teams around the world have shown with mathematics how a cloaking device could work in principle, by making light waves flow around an object - just as water in a river flows undisturbed around a smooth rock.
In principle, their invisibility cloak could be realised with artificial materials called "metamaterials," composite materials not found in nature, which could hide a person, or guide light around an ugly tower block which blocks a view.
Wormholes could also be made with metamaterial tube so that light from the outside bends around a wormhole, making it invisible, while light inside bounces along the channel as if whizzing along inside an optical fibre that could one day be used in the home to provide invisible cables to wire up electronics or provide three dimensional images.They also offer a host of military uses.
Now two such materials have been developed by Prof Xiang Zhang and colleagues at the University of California in Berkeley, who will outline the advances in the journals Nature and Science.
Front Page Article
In recent years, several teams around the world have shown with mathematics how a cloaking device could work in principle, by making light waves flow around an object - just as water in a river flows undisturbed around a smooth rock.
In principle, their invisibility cloak could be realised with artificial materials called "metamaterials," composite materials not found in nature, which could hide a person, or guide light around an ugly tower block which blocks a view.
Wormholes could also be made with metamaterial tube so that light from the outside bends around a wormhole, making it invisible, while light inside bounces along the channel as if whizzing along inside an optical fibre that could one day be used in the home to provide invisible cables to wire up electronics or provide three dimensional images.They also offer a host of military uses.
Now two such materials have been developed by Prof Xiang Zhang and colleagues at the University of California in Berkeley, who will outline the advances in the journals Nature and Science.
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