Stretchable conductors enable robotic elbows
The stuff of science fiction is fast becoming fact in a Princeton laboratory, where electrical engineering professor Sigurd Wagner and researcher Stephanie Lacour are developing a new sensitive skin that will revolutionize robotics and medical technology.This skin is made from a corrugated gold film, just 25 nanometers thick embedded in a silicone membrane, that can stretch at least 15 percent while still conducting electricity.Wagner compared the skin to an electronic surface that can "stretch like rubber."One of the primary applications for this new technology, Wagner said, is to "make a skin that is like a human skin for robots." Since the skin is elastic enough to accommodate a large range of movement and is also an electrical conductor, it will allow robots greater sensory abilities."The first step is to get robots and machines that are cautious," said Wagner.




