Electrochemical Strain Microscopy (IMAGE) University of Washington Caption This is a schematic of the electrochemical strain microscopy technique used to measure which regions of the P3HT film could subtly swell to let in ion molecules. Credit Rajiv Giridharagopal Usage Restrictions Must include credit 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.