Alfred Ludwig, Ruhr-University Bochum (IMAGE) Ruhr-University Bochum Caption For Alfred Ludwig, the current paper is the 200th that has been accepted by a peer-reviewed journal. Credit RUB, Marqard Usage Restrictions The image may only be used for reporting about the Ruhr-Universitaet Bochum in the context of the press release 'How to discover new materials quickly' published in July 2019. 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.