tunable “meta-skin” that uses rows of small, liquid-metal devices to cloak
an object from the sharp eyes of radar.
The meta-skin takes its name from meta-materials, which are composites that have properties not found in nature and that can manipulate electromagnetic waves. By stretching and flexing the polymer meta-skin, it can be tuned to reduce the reflection of a wide range of radar frequencies.
From our very good friends over at phys.org