flexible self powered (IMAGE) Penn State Caption An international team of researchers, led by Huanyu "Larry" Cheng, Dorothy Quiggle Career Development Professor in the Penn State Department of Engineering Science and Mechanics, has developed a stretchable antenna and rectenna system that harvests energy from radio waves in the ambient environment to power wearable devices. Credit Larry Cheng, Penn State 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.