circuit on hand (IMAGE) Penn State Caption With a novel layer to help the metallic components of the sensor bond, an international team of researchers printed sensors directly on human skin. Credit Ling Zhang, Penn State/Cheng Lab and Harbin Institute of Technology Usage Restrictions non commercial use only License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.