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

Autor: Marc Dubois, Chengzhi Shi, Xuefeng Zhu, Yuan Wang, Xiang Zhang
Jazyk: angličtina
Rok vydání: 2017
Předmět:
Zdroj: Nature Communications, Vol 8, Iss 1, Pp 1-6 (2017)
Druh dokumentu: article
ISSN: 2041-1723
DOI: 10.1038/ncomms14871
Popis: 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.
Databáze: Directory of Open Access Journals