The physicist Andrea Alu of the University of Texas presented an 'invisibility cloak' which adds a CMOS 'inverter' to the corners of the device to the (already tested) use of metamaterials, making it thinner and lighter.
The effect is impressive and tangible: it shows us how this mechanism of 'camouflage' will be used shortly thereafter, probably in the military field, although it would have a series enormous number of possibilities applications (even in ethology: the study of animal species would be facilitated by the possibility of be in physical presence without disturbing the subjects observed).
Here are a couple of videos to focus on what we are talking about:
