Acoustic perfect absorbers via spiral metasurfaces with embedded apertures
Acoustic perfect absorbers via spiral metasurfaces with embedded apertures
复制标题
通过带有嵌入式孔的螺旋超表面实现完美的声学吸收器
DOI：
10.1063/1.5063289
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发表时间：
2018-12-03
影响因子：
4
通讯作者：
Li, Yong
中科院分区：
文献类型：
--
作者：
Huang, Sibo;Fang, Xinsheng;Li, Yong
在这项工作中，我们分析和实验提出了完美的吸声体通过螺旋形超颖表面组成的螺旋通道和嵌入式孔。在工作波长的0.1/100以下的超薄厚度下实现了完美的吸收（实验中达到0.999）。由于嵌入式孔提供的上级阻抗操纵，具有可调谐频率的完美吸收被证明。我们的研究结果将有助于为低频吸收challense.In这项工作中，我们分析和实验提出了完美的吸声材料通过螺旋形超颖表面组成的螺旋通道和嵌入式孔径薄，轻的吸收铺平了道路。在工作波长的0.1/100以下的超薄厚度下实现了完美的吸收（实验中达到0.999）。由于嵌入式孔提供的上级阻抗操纵，具有可调谐频率的完美吸收被证明。我们的研究结果将有助于为低频吸收挑战设计薄而轻的吸收体铺平道路。
In this work, we analytically and experimentally present perfect acoustic absorbers via spiral metasurfaces composed of coiled channels and embedded apertures. Perfect absorption (reaching 0.999 in experiments) is realized with an ultra-thin thickness down to ∼1/100th of the operating wavelength. Owing to the superior impedance manipulation provided by the embedded apertures, perfect absorption with tunable frequencies is demonstrated. Our results would contribute to paving a way towards designing thin and light absorbers for the low frequency absorption challenge.In this work, we analytically and experimentally present perfect acoustic absorbers via spiral metasurfaces composed of coiled channels and embedded apertures. Perfect absorption (reaching 0.999 in experiments) is realized with an ultra-thin thickness down to ∼1/100th of the operating wavelength. Owing to the superior impedance manipulation provided by the embedded apertures, perfect absorption with tunable frequencies is demonstrated. Our results would contribute to paving a way towards designing thin and light absorbers for the low frequency absorption challenge.