Boston scientists develop 'invisible cloak'

Wannabe Harry Potters line up. Here comes the the much-sought-after cloak that ensures invisibility.

Scientists at Tufts and Boston University have created a small "invisibility cloak" made of gold-etched silk.

Not exactly made for wand-toting little wizards, the scientists say the one square centimetre prototype is made of a unique metamaterial, reports Discovery News.

Although it now works only on terahertz waves (T-rays), researchers are hopeful of applying the same principles to make the material work at other wavelengths. And with time, fo course, they say it could even work in visible light spectrum, meaning that it can be used a la Potter.

The Boston scientists created the metamaterial by "stencilling" 10,000 gold resonators onto a 1 centimetre square of silk to develop its "invisibility".