TY - JOUR
T1 - Three-Dimensional Acoustic Double-Zero-Index Medium with a Fourfold Degenerate Dirac-like Point
AU - Xu, Changqing
AU - Ma, Guancong
AU - Chen, Zeguo
AU - Luo, Jie
AU - Shi, Jinjie
AU - Lai, Yun
AU - Wu, Ying
N1 - KAUST Repository Item: Exported on 2020-10-01
PY - 2020/2/21
Y1 - 2020/2/21
N2 - We report the first realization of a three-dimensional (3D) acoustic double-zero-index medium (DZIM) made of a cubic lattice of metal rods. While the past decade has seen several realizations of 2D DZIM, achieving such a medium in 3D has remained an elusive challenge. Here, we show how a fourfold degenerate point with conical dispersion can be induced at the Brillouin zone center, such that the material becomes a 3D DZIM with the effective mass density and compressibility simultaneously acquiring near-zero values. To demonstrate the functionalities of this new medium, we have fabricated an acoustic waveguide of 3D DZIM in form of a
AB - We report the first realization of a three-dimensional (3D) acoustic double-zero-index medium (DZIM) made of a cubic lattice of metal rods. While the past decade has seen several realizations of 2D DZIM, achieving such a medium in 3D has remained an elusive challenge. Here, we show how a fourfold degenerate point with conical dispersion can be induced at the Brillouin zone center, such that the material becomes a 3D DZIM with the effective mass density and compressibility simultaneously acquiring near-zero values. To demonstrate the functionalities of this new medium, we have fabricated an acoustic waveguide of 3D DZIM in form of a
UR - http://hdl.handle.net/10754/662156
UR - https://link.aps.org/doi/10.1103/PhysRevLett.124.074501
UR - http://www.scopus.com/inward/record.url?scp=85080960619&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.124.074501
DO - 10.1103/PhysRevLett.124.074501
M3 - Article
C2 - 32142328
SN - 0031-9007
VL - 124
JO - Physical Review Letters
JF - Physical Review Letters
IS - 7
ER -