An extremely-thin acoustic metasurface for low-frequency sound attenuation with a tunable absorption bandwidth

Guo, Jingwen; Zhang, Xin; Fang, Yi; Qu, Renhao

doi:10.1016/j.ijmecsci.2021.106872

Cited by 67 publications

(12 citation statements)

References 32 publications

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“…Thanks to their thinness which is usually in the sub-wavelength, AMs have added value and functionalities in comparison with other acoustic metamaterials with small footprint (Xie et al, 2014;Cheng et al, 2015;Zhao et al, 2017;Assouar et al, 2018;Quan and Alu, 2019). Numerous exotic acoustic phenomena such as sound cloaking (Faure et al, 2016;Ma et al, 2019;Fan et al, 2020;Zhou et al, 2020), sound splitting (Zhai et al, 2018;Ding et al, 2021), sound absorption (Ma et al, 2014;Song et al, 2019;Liu et al, 2021;Li et al, 2022a;Guo et al, 2022), anomalous reflection or refraction (Diaz-Rubio and Tretyakov, 2017;Li et al, 2019a;Zhu and Lau, 2019;Li et al, 2020a;Chiang et al, 2020;Song et al, 2021), sound focusing (Zhu et al, 2016a;Lombard et al, 2022), one-way sound propagation (Zhu et al, 2015;Jiang et al, 2016), and medical ultrasound (Tian et al, 2017;Hu et al, 2022) have been proposed and demonstrated using AMs. AMs possess unusual features, including selective focusing and negative refraction, are enabled by the generalized Snell's law, which adds a new degree of freedom to control the behavior of transmitted or reflected waves by incorporating a lateral momentum (Yu et al, 2011) (see Figure 1).…”

Section: Introductionmentioning

confidence: 99%

Tunable, reconfigurable, and programmable acoustic metasurfaces: A review

2023

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The advent of acoustic metasurfaces (AMs), which are the two-dimensional equivalents of metamaterials, has opened up new possibilities in wave manipulation using acoustically thin structures. Through the interaction between the acoustic waves and the subwavelength scattering, AMs exhibit versatile capabilities to control acoustic wave propagation such as by steering, focusing, and absorption. In recent years, this vibrant field has expanded to include tunable, reconfigurable, and programmable control to further expand the capacity of AMs. This paper reviews recent developments in AMs and summarizes the fundamental approaches for achieving tunable control, namely, by mechanical tuning, active control, and the use of field-responsive materials. An overview of basic concepts in each category is first presented, followed by a discussion of their applications and details about their performance. The review concludes with the outlook for future directions in this exciting field.

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Section: Introductionmentioning

confidence: 99%

Tunable, reconfigurable, and programmable acoustic metasurfaces: A review

2023

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“…Acoustic metasurface has been widely applied for acoustic focusing [1,2], acoustic cloaking [3], acoustic energy harvesting [4,5], and sound absorption [6][7][8][9][10][11][12][13]. The sound-absorbing metasurface (SM) can achieve effective low-frequency sound absorption on the subwavelength scale, solving the problems of insufficient low-frequency dissipation of traditional porous materials.…”

Section: Introductionmentioning

confidence: 99%

Dual-frequency anti-nonlinear sound-absorbing metasurface via multilayer nested microslit resonators

Wei

Chu

2023

Phys. Scr.

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We propose a dual-frequency anti-nonlinear sound-absorbing metasurface (DASM) based on multilayer nested microslit resonators. Under the assumption of a linear system, the theoretical acoustic impedance of the DASM is derived by the transfer matrix method. Furthermore, the influence of structural parameters on sound absorption is also explored. The numerical and experimental results show that the proposed DASM can achieve quasi-perfect sound absorption at two low frequencies corresponding to the first two orders of the acoustic cavity mode frequencies of the structural unit, and enjoys strong anti-nonlinear performance and robustness to incident angles.

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“…Although these metasurfaces can achieve perfect sound absorption at low frequencies, their sound absorption bandwidth is relatively narrow. Based on impedance matching and multi-order resonance mechanism, low-frequency broadband sound absorbing metasurfaces with deep subwavelength characteristics were achieved by combining perfectly absorbing CAM/BAM units at different frequencies in parallel/series [18][19][20][21][22][23][24][25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

Study on the acoustic performance of bending metasurface with ultra-thin broadband quasi-perfect sound absorption

Cheng,

Zeng,

Liu

et al. 2023

Phys. Scr.

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In order to achieve low-frequency broadband noise control under subwavelength thickness, this paper established a theoretical model for calculating the sound absorption coefficient of curled acoustic metasurface (CAM) composed of embedded hole, equal width curled channel, and gradient width curled channel, which is based on the thermal viscosity equivalent model and impedance equivalent model. Considering the over resistance effect caused by multi-unit composite structure, a multi-parameter control strategy was used to design bending acoustic metasurface (BAM) units for perfect sound absorption at four discrete frequencies of 546Hz, 563Hz, 585Hz, and 601Hz, which is based on the complex frequency plane method. and the thicknesses of these unites are only (1.2cm). The broadband and efficient sound absorption effect of the four parallel composite BAM units was theoretically studied. The simulation and experiment verified that the composite BAM not only achieved perfect sound absorption at 573Hz with a subwavelength thickness of 12mm, but also had an efficient sound absorption(α>0.8) frequency band of 512Hz-621Hz, with a bandwidth up to 109Hz. The research in this paper provides a certain theoretical basis for the design of low-frequency broadband compact acoustic structures, and has certain reference value for low-frequency broadband noise control.

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An extremely-thin acoustic metasurface for low-frequency sound attenuation with a tunable absorption bandwidth

Cited by 67 publications

References 32 publications

Tunable, reconfigurable, and programmable acoustic metasurfaces: A review

Tunable, reconfigurable, and programmable acoustic metasurfaces: A review

Dual-frequency anti-nonlinear sound-absorbing metasurface via multilayer nested microslit resonators

Study on the acoustic performance of bending metasurface with ultra-thin broadband quasi-perfect sound absorption

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