Acoustical metamaterial with near-zero density

14 julio 2015

When a sound wave hits an obstacle and is scattered, the signal may be lost or degraded. But what if you could guide the signal around that obstacle, as if the interfering barrier didn’t even exist? Recently, researchers created a material from polyethylene membranes that does exactly that.img src=»″ height=»1″ width=»1″ alt=»»/