Research Progress and Development Trends of Acoustic Metamaterials

Acoustic metamaterials are materials with artificially designed structures, which have characteristics that surpass the behavior of natural materials, such as negative refraction, anomalous Doppler effect, plane focusing, etc. This article mainly introduces and summarizes the related research progress of acoustic metamaterials in the past two decades, focusing on meta-atomic acoustic metamaterials, metamolecular acoustic metamaterials, meta-atomic clusters and metamolecule cluster acoustic metamaterials. Finally, the research overview and development trend of acoustic metasurfaces are briefly introduced.

Automated summary

Acoustic metamaterials are materials with artificially designed structures that exhibit characteristics beyond those of natural materials. Research in the past two decades has focused on meta-atomic and metamolecular acoustic metamaterials, with an increasing interest in acoustic metasurfaces.