Light-Activated Graphene Coating Promises On-Demand Germ-Killing Shield

Swiss researchers developed ultra-thin graphene-oxide coatings that, when illuminated with near-infrared light, heat to about 44°C and generate reactive oxygen species to kill bacteria. In lab tests, the coating nearly eliminated a drug-resistant strain and reduced another by over 90%, and it can be activated through tissue, offering a potential implant coating solution, though clinical use is years away.