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Bubble Architectures for Locally Resonant Acoustic Metamaterials
Author(s) -
Cai Zheren,
Zhao Shengdong,
Huang Zhandong,
Li Zheng,
Su Meng,
Zhang Zeying,
Zhao Zhipeng,
Hu Xiaotian,
Wang YueSheng,
Song Yanlin
Publication year - 2019
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201906984
Subject(s) - metamaterial , materials science , broadband , split ring resonator , resonator , acoustics , acoustic metamaterials , cloaking , bubble , optoelectronics , optics , computer science , physics , parallel computing
Soft acoustic metamaterials that embed soft materials in a host media have promising applications in aqueous environments. However, the preparation of soft metamaterials under water and realization of low‐frequency soft acoustic metamaterials remains a challenge. By combining 3D printing technology and surface hydrophobic properties, this work presents a general approach to construct 3D soft acoustic metamaterials using bubbles as resonator units. Low‐frequency broadband locally resonant metamaterials can be realized using patterned bubbles with bandgaps that are orders of magnitude wider than other locally resonant metamaterials. In addition, a water‐to‐air ultratransmission metasurface is prepared by patterning a layer of bubbles beneath the water surface, which allows for the ultratransmission of sound across an air–water interface. This strategy opens up promising avenues for many applications based on locally resonant metamaterials such as deep subwavelength acoustic superlenses or negative‐refraction metamaterials.