Measured pressure field mappings of a bare (left) and cloaked (right) steel cylinder illuminated with a point ultrasound source inside a water tank. Selected for an Editors' Suggestion and a Viewpoint in Physics.
From the article:
Broadband Acoustic Cloak for Ultrasound WavesShu Zhang, Chunguang Xia, and Nicholas Fang
Phys. Rev. Lett. 106, 024301 (2011)
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