There are 3D printers that build things up, adding one sliver of plastic at a time, and 3D mills that tear things down, grinding away one small chunk at a time. But Skylar Tibbits offer a very provocative alternative: technology for 3D printing where the chunks start separated and intelligently arrange themselves into basically any object.
Tibbits' latest technology for so-called "4D printing," unveiled during a talk at the TED conference on 26 February in Long Beach, California, uses water to activate and power strands of material that fold themselves into desired shapes.
By: Ryan Tate, Edited by: David Cornish
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via Wired.co.uk
http://www.wired.co.uk/news/archive/2013-02/27/4d-printing
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