Area A ‘SCALMS’ deals with the dynamic formation of supported liquid alloy interfaces in the presence of reactive gases, representing a new, technically relevant route toward heterogeneous single-atom catalysts. The concept of ‘Supported Catalytically Active Liquid Metal Solutions (SCALMS)’, established recently by four PIs jointly, will be explored systematically towards optimised materials properties and enhanced performance. We aim to develop SCALMS into a fundamentally understood and scalable approach for new catalytic materials with highest reactivity, metal efficiency and ultimate robustness.