Ideal Invisibility Cloaks for Visible Light in Diffusive
Media / Simple Setup Produces Surprising Results
Real invisibility cloaks are rather complex and work in
certain situations only. The laws of physics prevent an optical invisibility
cloak from making objects in air invisible for any directions, colors, and
polarizations. If the medium is changed, however, it becomes much easier to
hide objects. KIT physicists have now succeeded in manufacturing with
relatively simple means and testing an ideal invisibility cloak for diffusive
light-scattering media, such as fog or milk.