Active synthesis of a gyroscopic-nonreciprocal acoustic metamaterial

2020 ◽  
Vol 148 (3) ◽  
pp. 1271-1288
Author(s):  
A. Baz
Keyword(s):  
Active Synthesis ◽  
Acoustic Metamaterial

scholarly journals Spatial Decomposition of a Broadband Pulse Caused by Strong Frequency Dispersion of Sound in Acoustic Metamaterial Superlattice

Materials ◽  
2020 ◽  
Vol 14 (1) ◽  
pp. 125
Author(s):  
Yuqi Jin ◽  
Yurii Zubov ◽  
Teng Yang ◽  
Tae-Youl Choi ◽  
Arkadii Krokhin ◽  
...  
Keyword(s):  
Acoustic Pulse ◽  
Frequency Dispersion ◽  
Transmission Band ◽  
Lateral Position ◽  
Operating Frequency ◽  
Frequency Range ◽  
Frequency Spectra ◽  
Acoustic Metamaterial ◽  
Superlattice Structure ◽  
Broadband Pulse

An acoustic metamaterial superlattice is used for the spatial and spectral deconvolution of a broadband acoustic pulse into narrowband signals with different central frequencies. The operating frequency range is located on the second transmission band of the superlattice. The decomposition of the broadband pulse was achieved by the frequency-dependent refraction angle in the superlattice. The refracted angle within the acoustic superlattice was larger at higher operating frequency and verified by numerical calculated and experimental mapped sound fields between the layers. The spatial dispersion and the spectral decomposition of a broadband pulse were studied using lateral position-dependent frequency spectra experimentally with and without the superlattice structure along the direction of the propagating acoustic wave. In the absence of the superlattice, the acoustic propagation was influenced by the usual divergence of the beam, and the frequency spectrum was unaffected. The decomposition of the broadband wave in the superlattice’s presence was measured by two-dimensional spatial mapping of the acoustic spectra along the superlattice’s in-plane direction to characterize the propagation of the beam through the crystal. About 80% of the frequency range of the second transmission band showed exceptional performance on decomposition.

scholarly journals Double-negative acoustic metamaterial based on hollow steel tube meta-atom

2013 ◽  
Vol 113 (10) ◽  
pp. 104902 ◽  
Author(s):  
Huaijun Chen ◽  
Hongcheng Zeng ◽  
Changlin Ding ◽  
Chunrong Luo ◽  
Xiaopeng Zhao
Keyword(s):  
Steel Tube ◽  
Double Negative ◽  
Acoustic Metamaterial ◽  
Meta Atom

Acoustic metamaterial behavior of three-dimensional periodic architectures assembled by robocasting

2014 ◽  
Vol 105 (21) ◽  
pp. 211904 ◽  
Author(s):  
Alena Kruisová ◽  
Hanuš Seiner ◽  
Petr Sedlák ◽  
Michal Landa ◽  
Benito Román-Manso ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Acoustic Metamaterial

Elastic properties of ABS-plastic acoustic metamaterial produced by 3D-printing method

2021 ◽  
Author(s):  
Alexey I. Kokshayskiy ◽  
Alexander B. Volodarskii ◽  
Natalia V. Shirgina ◽  
Natalia I. Odina ◽  
Alexander I. Korobov
Keyword(s):  
3D Printing ◽  
Elastic Properties ◽  
Acoustic Metamaterial ◽  
Printing Method
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