A Review of Acoustic Metamaterials and Phononic Crystals

As a new kind of artificial material developed in recent decades, metamaterials exhibit novel performance and the promising application potentials in the field of practical engineering compared with the natural materials. Acoustic metamaterials and phononic crystals have some extraordinary physical...

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Bibliographic Details
Published inCrystals (Basel) Vol. 10; no. 4; p. 305
Main Authors Liu, Junyi, Guo, Hanbei, Wang, Ting
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.04.2020
Subjects
acoustic metamaterial
Acoustic properties
Acoustics
band gaps
Composite materials
Crystals
Dielectric properties
effective negative parameters
Fourier transforms
Insulation
Metamaterials
Noise
Parameters
Permeability
phononic crystal
Physical properties
Propagation
Random vibration
research overview
Sound waves
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Summary:As a new kind of artificial material developed in recent decades, metamaterials exhibit novel performance and the promising application potentials in the field of practical engineering compared with the natural materials. Acoustic metamaterials and phononic crystals have some extraordinary physical properties, effective negative parameters, band gaps, negative refraction, etc., extending the acoustic properties of existing materials. The special physical properties have attracted the attention of researchers, and great progress has been made in engineering applications. This article summarizes the research on acoustic metamaterials and phononic crystals in recent decades, briefly introduces some representative studies, including equivalent acoustic parameters and extraordinary characteristics of metamaterials, explains acoustic metamaterial design methods, and summarizes the technical bottlenecks and application prospects.
ISSN:2073-4352
2073-4352
DOI:10.3390/cryst10040305