From the headphones we use to listen to our favorite songs or podcasts, to sonic camouflage employed by submarines, how we transmit and experience sound is an essential part of how we engage with our surrounding world. Acoustic metamaterials are materials designed to control, direct and manipulate soundwaves as they pass through different mediums. As such, they can be designed and inserted into a structure to dampen or transmit sound.
Click here for original story, Researchers create a new acoustic smart material inspired by shark skin
Source: Phys.org