A collaboration between researchers from Virginia Tech and Oak Ridge National Laboratory (ORNL) in the US has built a chip-scale device that can trap and control sound waves in a way that mimics the ...

This image is a simulation of a kind of acoustic wave called a Rayleigh-Bloch wave. The stripes of light and dark areas represent the “peaks" and “troughs" of the waves and are shaped by their ...

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The top layer represents the location of the sound source and the path of sound propagation (A). The bottom layers represent convergence zones with different sound propagation paths (B-F). Sound waves ...