Liquid metal nanoparticles enable ultrafast fire detection

By incorporating liquid metals into sensors, researchers have created a fire warning system that is ultrafast, flame-retardant and reusable. Based on MXene/cellulose films, the new design incorporates gallium-based liquid metal nanoparticles coated in polydopamine (PDA) that reinforce conductive pathways to improve signal stability and, unexpectedly, fire resistance.