MIT creates 3D-printed robot inspired by the goldbug beetle

To create their contraption, the team turned to 3D printing. They used a custom 3D printer called MultiFab to make the T-shaped gizmo, which has a small circular part that changes color when the T's crossbars stretch. MultiFab did everything, from printing the device's thin, sensor-laden plastic skin to depositing and curing the liquid that serves as its semiconductor. "In nature, networks of sensors and interconnects are called sensorimotor pathways. We were trying to see whether we could replicate sensorimotor pathways inside a 3-D-printed object. So we considered the simplest organism we could find."