Via Mashable

“On either side of the composite and inside is stiff paper. In the very middle there is a flexible printed circuit,” Felton added. “When electricity is applied, it heats up like when you turn on a light bulb and the heat warms up the polymer and causes it to contract. Because the polymer is bonded to the paper it pulls on the paper causing the paper to fold over on itself.”

Imagine a ream of dozens of robotic satellites sandwiched together so that they could be sent up to space and then assemble themselves remotely