Improving the Directionality of Low-Frequency Acoustic Radiation by a Finite Array of Quadrupolar Sources with Acoustic Metamaterials

Improving the Directionality of Low-Frequency Acoustic Radiation by a Finite Array of Quadrupolar Sources with Acoustic Metamaterials

Manipulating radiation patterns is challenging, especially at low frequencies. In this paper, we demonstrate that acoustic metamaterials arranged as an array of quadrupoles remarkably improve the directionality of acoustic radiation at low frequencies, compared with previous metamaterials arranged a...

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Bibliographic Details
Main Authors: Qinglei Zeng, Shenlian Gao, Yun Lai, Xiaozhou Liu
Format: Article
Language:English
Published: MDPI AG 2023-01-01
Series:Crystals
Subjects:
acoustic metamaterials
F-P resonance effect
two-dimensional Helmholtz resonator
linear array
dipole
quadrupole
Online Access:https://www.mdpi.com/2073-4352/13/1/101

Internet

https://www.mdpi.com/2073-4352/13/1/101

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