3 ms·
From the image I’d hardly call that a metamaterial. It’s just a novel shape for a Helmholtz-resonator which if the name didn’t give it away has been known about
by wizardforhire 7y ago
From the image I’d hardly call that a metamaterial. It’s just a novel shape for a Helmholtz-resonator which if the name didn’t give it away has been known about for a very long time. I will give them credit for stream lining the design process.
https://en.wikipedia.org/wiki/Helmholtz_resonance https://en.wikipedia.org/wiki/Helmholtz_resonance