Conductive polymer ink (IMAGE) Linköping University Caption Researchers at Link&ouml;ping University, Sweden, have developed a stable high-conductivity polymer ink. The new n-type material comes in the form of ink with ethanol as the solvent. Credit Thor Balkhed Usage Restrictions Please use appropriate caption and 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.