Proton Conduction (IMAGE) Penn State Caption These are proton conductivity measurements of protein membranes using impedance spectroscopy. Credit Abdon Pena-Franchesch 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.