Ink Printed Electronics Simone and Kai (IMAGE) Linköping University Caption The energy levels of the two materials perfectly match, such that charges are spontaneously transferred from one polymer to the other, shown by Kai Xu and Simone Fabiano, Linköping University. Credit Thor Balkhed Usage Restrictions Connected to news from Linköping University 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.