Acoustic Metamaterial (IMAGE)

Boston University

Acoustic Metamaterial

Caption

The mathematically designed, 3D-printed acoustic metamaterial is shaped in such a way that it sends incoming sounds back to where they came from, Ghaffarivardavagh and Zhang say. Inside the outer ring, a helical pattern interferes with sounds, blocking them from transmitting through the open center while preserving air's ability to flow through.

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Photo by Cydney Scott for Boston University

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