Researchers Check Data (IMAGE) Penn State Caption Michael Hickner, seated, along with research associates Yongjun Leng, left, and Nanwen Li review the data received from a specific polymer membrane that has been inserted into the fuel cell test stand. Credit Patrick Mansell 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.