Heat-sensitive paper could lead to 3D printers - Engadget

"When you've already got self-assembling robots and Li-ion batteries, you might as well tackle 3D printouts next, right? Apparently that's the mantra being used by physicists in Israel who have purportedly invented a monomer solution that, when heated over 33 degrees Celsius, would bend and form into the object depicted, theoretically turning a flat, 2D photo into a three-dimensional rendition."