Observation of acoustic Dirac-like cone and double zero refractive index

Impedance mismatch between acoustic metamaterials and a surrounding medium hinders efficient applications, especially for zero-index materials. Here, Duboiset al. utilize the Dirac-like dispersion in a double-zero-index material to overcome this problem and to collimate sound.

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Auteurs principaux: Marc Dubois, Chengzhi Shi, Xuefeng Zhu, Yuan Wang, Xiang Zhang
Format: article
Langue:EN
Publié: Nature Portfolio 2017
Sujets:
Q
Accès en ligne:https://doaj.org/article/26e8043ca24343f38ffb77bb7ac803d6
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