Researchers have been working hard to create 3D printed robotic prosthetic hands that look, and feel like, a real human hand; a team at the University of Wollongong developed a prosthetic hand that has an interface that, when placed on a person's arm muscles, gives it a sense of touch. But engineering researchers at the University of Minnesota's College of Science and Engineering have gone even further: thanks to their hard work, and 3D printing, a type of bionic skin could give robots the sense of touch, without needing an interface attached to a human hand. The research team developed a groundbreaking technique to 3D print stretchable, electronic sensory devices, which is a big step in the right direction to printing electronics on actual human skin. Read more at 3DPrint.com: http://3dprint.com/173974/print-flex...ronic-sensors/