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physics.app-ph2019
Bidirectional acoustic negative refraction based on a pair of metasurfaces with both local and global PT-symmetries
Jun Lan, Xiaowei Zhang, Liwei Wang +2
Negative refraction plays an important role in acoustic wave manipulation and imaging. However, conventional systems based on acoustic metamaterials suffer from the limits induced…
physics.app-ph2019
Three-dimensional acoustic double-zero-index medium with a Dirac-like point
Changqing Xu, Guancong Ma, Ze-Guo Chen +4
We report a design and experimental realization of a three-dimensional (3D) acoustic double-zero-index medium (DZIM), whose effective mass density and compressibility are nearly ze…