Jul 03
PRINCETON, N.J. — 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.
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