Invisibility is now one step closer

Using the nanotechnology
scientists were able to make a significant step towards inventing an
"optical cloaking", which represents a device able to make objects
invisible. The device guides light around anything that is placed
withing the so-called "cloak".

The engineers at Purdue University have followed mathematical
guidelines that were devised last year by the UK physicists to create a
theoretical design, which in its turn uses an array of very small
needles. The latter radiate from a central spoke outwards.