U-Penn scientists working on real invisibility cloak

Zach of the Harry Potter Fan Zone let us know about work at the University of Pennsylvania on an actual invisibility shield called a “plasmonic cover”. The Scotsman writes:

According to Dr Andrea Alu and Dr Nader Engheta, the engineers behind the project, the key is to reduce light scattering.
Objects are visible because light bounces off them; if this can be prevented and if the objects did not reflect any light, they would become invisible. The “plasmonic screen” achieves this by resonating in tune with the illuminating light.

So it’s not exactly like Demiguise hair but it does have ramifications for stealthy activity by Muggles!