Scientists at EPFL create “plasmacoustic metalayer” for advanced noise reduction. The plasma-based device absorbs 100% of incoming sound intensity without reflection. Remarkably, the plasma layer is only 17 mm thick, revolutionizing noise reduction techniques. Scientists from EPFL have developed an innovative device called the “plasmacoustic metalayer” that surpasses conventional methods of noise reduction. Utilizing plasma, this device exhibits superior control