Researchers at Princeton University have brought a new tool into the realm of cybernetics: a 3-D printer.
The scientists have devised a way to print an ear-shaped chunk of silicone mixed with bovine cells and infused with silver particles that form an antenna. Like any antenna, this one can pick up radio signals.
The 3-D ear cannot replace a human one. It was designed to test what can be done with 3-D printing technology in cybernetics, which is the field of combining biological tissue with electronics.