EPR-probe (IMAGE) Technical University of Munich (TUM) Caption Corresponding author Johannes Wandt with one of the electron paramagnetic resonance probes he developed for the detection of singlet-oxygen which is produced during the charging process. Credit Andreas Battenberg / TUM Usage Restrictions None 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.