Acoustic cloak: Closer to achieving the acoustic undetectability of objects

Acoustic cloak: Closer to achieving the acoustic undetectability of objects:

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Researchers from the Universitat Politècnica de València (UPV), Spain's National Research Council (CSIC), and the Universitat de València (UV) have taken another step towards achieving what is known as "acoustic undetectability." It is a new prototype two-dimensional acoustic cloak that can make sound waves with a specific frequency reaching an object avoid it as if it was not there, thanks to the cooperative effect of the units of which the cloak is made up.