The walls have ears: Princeton researchers develop walls that can listen, and talk
Wednesday, August 21, 2013 - 06:00
in Physics & Chemistry
(Phys.org) —Using a modern twist on a technology developed in the 1920s, researchers at Princeton University have embedded ultrathin radios directly on plastic sheets, which can be applied to walls and other structures. The innovation could serve as the basis for new devices ranging from an invisible communications system inside buildings to sophisticated structural monitors for bridges and roads.