Broadband acoustic energy harvesting metasurface with coupled Helmholtz resonators

Liu, Guangsheng; Peng, Yao-Yin; Liu, Ming‐Hao; Zou, Xin‐Ye; Cheng, Jianchun

doi:10.1063/1.5041731

Cited by 64 publications

(42 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Liu et al [69] proposed a broadband AEH metasurface, that was composed of coupled Helmholtz resonators and a PZT wafer. A push–pull effect was achieved with different neck lengths of the Helmholtz resonator and resulted in good excitation of the PZT patch in a wide range.…”

Section: Established Aeh Approachesmentioning

confidence: 99%

See 1 more Smart Citation

Recent Developments of Acoustic Energy Harvesting: A Review

et al. 2019

View full text Add to dashboard Cite

Acoustic energy is a type of environmental energy source that can be scavenged and converted into electrical energy for small-scale power applications. In general, incident sound power density is low and structural design for acoustic energy harvesting (AEH) is crucial. This review article summarizes the mechanisms of AEH, which include the Helmholtz resonator approach, the quarter-wavelength resonator approach, and the acoustic metamaterial approach. The details of recently proposed AEH devices and mechanisms are carefully reviewed and compared. Because acoustic metamaterials have the advantages of compactness, effectiveness, and flexibility, it is suggested that the emerging metamaterial-based AEH technique is highly suitable for further development. It is demonstrated that the AEH technique will become an essential part of the environmental energy-harvesting research field. As a multidisciplinary research topic, the major challenge is to integrate AEH devices into engineering structures and make composite structures smarter to achieve large-scale AEH.

show abstract

Section: Established Aeh Approachesmentioning

confidence: 99%

“…Schematic diagram of the AEH metasurface Reproduced with permission from [69]; published by American Institute of Physics, 2018.…”

Section: Figurementioning

confidence: 99%

Recent Developments of Acoustic Energy Harvesting: A Review

et al. 2019

View full text Add to dashboard Cite

show abstract

“…On the other hand, hybrid resonance, which originates from couplings between two different resonances, was proposed to achieve acoustic absorption [29][30][31][32][33], broadband acoustic energy harvesting [34], and broadband blazed acoustic gratings [35]. It is well known that hybrid resonance is always accompanied by antiresonance, which has been used to achieve negative dynamic mass [36], sound-proof metamaterial [37], acoustic transparency [38][39][40], and acoustics metasurface carpets [41].…”

Section: Introductionmentioning

confidence: 99%

Achromatic reflected metalens for highly directional and long-distance acoustic probing

Wang

et al. 2020

New J. Phys.

View full text Add to dashboard Cite

Simultaneous temporal and spatial focusing of a pulse is of significance for detection and imaging.Here, an achromatic reflected metalens is designed using hybrid resonance and anti-resonance. The theoretical result demonstrates that the anti-resonance provides an extra degree of freedom to control local phases of reflected waves, yielding an achromatic lens of thickness equal to one half of central wavelength. To overcome the shortcoming of traditional approach to design lenses (neglecting the intercell coupling), a boundary integral method is proposed to alleviate the focus deviation over a broadband. The achromatic feature of designed lens is then verified in the frequency range from 2800 to 5600 Hz by an experiment. Owing to a very weak frequency dependence of focal point and a high reflected focusing efficiency over a broadband, a highly directional and long-distance acoustic probing scheme (the mainlobe width about 8 0 ) is proposed with the aid of achromatic reflected metalens and being confirmed by another experiment, where a signal processing method using triple sensors separated by a subwavelength interval is adopted to eliminate the interferences between incident waves and reflected waves. Our result may find its application in a long-distance underwater acoustic probing.

show abstract

“…Acoustic metamaterials are artificial engineered periodic structures with exotic acoustic properties unreachable by natural materials, which greatly increase our ability for acoustic wave controlling. Since the first demonstration of acoustic metamaterials in 2000 by Liu et al 1 , acoustic metamaterials have been intensively investigated 2 and applied to a wide range of fields such as acoustic wave manipulation 3 , asymmetric sound wave propagation 4 , acoustic energy harvesting 5 , and topological acoustics 6 , 7 .…”

mentioning

confidence: 99%

Bilayer ventilated labyrinthine metasurfaces with high sound absorption and tunable bandwidth

Luo

Zhao

et al. 2021

Sci Rep

View full text Add to dashboard Cite

The recent advent of acoustic metamaterials offers unprecedented opportunities for sound controlling in various occasions, whereas it remains a challenge to attain broadband high sound absorption and free air flow simultaneously. Here, we demonstrated, both theoretically and experimentally, that this problem can be overcome by using a bilayer ventilated labyrinthine metasurface. By altering the spacing between two constituent single-layer metasurfaces and adopting asymmetric losses in them, near-perfect (98.6%) absorption is achieved at resonant frequency for sound waves incident from the front. The relative bandwidth of absorption peak can be tuned in a wide range (from 12% to 80%) by adjusting the open area ratio of the structure. For sound waves from the back, the bilayer metasurface still serves as a sound barrier with low transmission. Our results present a strategy to realize high sound absorption and free air flow simultaneously, and could find applications in building acoustics and noise remediation.

show abstract

Broadband acoustic energy harvesting metasurface with coupled Helmholtz resonators

Cited by 64 publications

References 39 publications

Recent Developments of Acoustic Energy Harvesting: A Review

Recent Developments of Acoustic Energy Harvesting: A Review

Achromatic reflected metalens for highly directional and long-distance acoustic probing

Bilayer ventilated labyrinthine metasurfaces with high sound absorption and tunable bandwidth

Contact Info

Product

Resources

About