Printed robot moves with a beat

Tiny device created with a 3-D printer employs heart cells to make it move

By Rachel Ehrenberg, 14:32 PM November 19, 2012

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Fueled by the rhythmic beating of rat heart cells, a soft-bodied robot the size of a grain of rice chugs across a Petri dish. Designed with drafting software on a computer, the bot’s blueprints were brought to life with a 3-D printer at the University of Illinois at Urbana-Champaign.

3-D printers create objects by depositing layer upon layer of a material other than ink, ultimately building a 3-D object from the bottom up. To create the bot, the printer squirts out a layer ...

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