3D printing is now accepted as the next disruptive technology. This article looks at the next innovation in this space, 4D printing, in which products continue to evolve after being manufactured. Research is already underway. "We are looking at the ability to program physical and biological materials to change shape, change properties and even compute outside of silicon-based matter," Skylar Tibbits, director of the Massachusetts Institute of Technology Self-Assembly Lab, recently said in a speech.

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