Sonic-crystal-based acoustic diode. Selected for an Editors' Suggestion and a Synopsis in Physics.

From the article:

Tunable Unidirectional Sound Propagation through a Sonic-Crystal-Based Acoustic Diode
Xue-Feng Li, Xu Ni, Liang Feng, Ming-Hui Lu, Cheng He, and Yan-Feng Chen
Phys. Rev. Lett. 106, 084301 (2011)

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