At the TED conference in Los Angeles, architect and computer scientist Skylar Tibbits showed how the process allows objects to self-assemble.
BBC: TED 2013: 4D printed objects 'make themselves'
"The rigid material becomes a structure and the other layer is the force that can start bending and twisting it, " said Mr Tibbits.
"We could also have heat, vibration and sound, " said Mr Tibbits.
"4D printing" is the term cientists are using to refer to a technology that MIT's Skylar Tibbits talked up during a recent TED appearance.
ENGADGET: 3D? Feh. MIT has already moved on to 4D printing (video) Alt
"Essentially the printing is nothing new, " Tibbits told the BBC.
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