Physics
Programmable Metamaterials for Adaptive Acoustic Cloaking
Quick fact
By controlling tiny components like valves or rotating gears within a metamaterial, researchers can change its acoustic properties in milliseconds, making sound 'flow around' an object as if it weren't there.
Why this is interesting
Imagine an object that can become invisible to sound—like a submarine that hides from sonar, or a concert hall that 'disappears' acoustically. But what if the cloak could adapt to changing conditions, like a chameleon?