The technology that would enable us to 3D-print electronics along with the circuits that make them work has been around for a while, but a team of Harvard researchers just announced a new 3D-printer that could change the game. Soon, you could 3D print a drone in your living room—which is insane.
You're looking at one of the smallest batteries ever made. Measuring less than a millimeter on each side, the tiny lithium-ion device was actually produced by a 3D printer. Which is nothing short of incredible when you think about it.