Princeton University graduate student Manu Mannoor holds a bionic ear as another is printed on a 3-D printer in Princeton, N.J. (AP)
Princeton Researchers Create 'Bionic Ear'
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JULY 06, 2013

With a 3-D printer, a petri dish and some cells from a cow, Princeton University researchers are growing synthetic ears that can receive — and transmit — sound.
The scientists send bovine cells mixed in a liquid gel through the printer, followed by tiny particles of silver. The printer is programmed to shape the material into a "bionic ear," and forms the silver particles into a coiled antenna. Like any antenna, this one can pick up radio signals that the ear will interpret as sound.
The 3-D ear is not designed to replace a human one, though; the research is meant to explore a new method of combining electronics with biological material.
Read more: Fox Tech