Dual-action optical switch: material shines under pressure and solvent for next-gen sensing and security
Peer-Reviewed Publication
Updates every hour. Last Updated: 3-Apr-2026 13:15 ET (3-Apr-2026 17:15 GMT/UTC)
Researchers have reported a zero-dimensional metal halide that switches its fluorescence ON through two independent pathways: pressure induces a structural transition to bright orange emission, while DMF solvent exposure activates intense yellow luminescence with 97% quantum yield. The solvent-driven “ON” state is fully reversible by mild heating, offering excellent cycling stability. This dual-stimuli response enables high-sensitivity DMF detection, advanced optical encryption, and reconfigurable logic operations.
Goethe University Frankfurt (Germany) ceremonially commissioned a state-of-the-art cryo plasma-FIB scanning electron microscope with nanomanipulator worth more than 5 million euros on Thursday. The large-scale instrument, supported by the Dr. Rolf M. Schwiete Foundation, is the first of its kind in Hesse and one of only a few in Germany. It enables precise nanobiopsies of biological samples such as tissue or cell aggregates and is a key technology for the Cluster of Excellence SCALE, where researchers investigate the molecular foundations of cells.