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Title: Real-time acoustic energy harvesting in tunable frequencies via metasurface fabricated by additive manufacturing
Authors: Chi, Mingxiang
Chen, Shibin
Jiao, Jiannan
Yu, Na
Keywords: Engineering::Mechanical engineering
Issue Date: 2023
Source: Chi, M., Chen, S., Jiao, J. & Yu, N. (2023). Real-time acoustic energy harvesting in tunable frequencies via metasurface fabricated by additive manufacturing. Journal of Applied Physics, 133(24), 245105-1-245105-8.
Journal: Journal of Applied Physics 
Abstract: This paper demonstrates an acoustic metasurface for energy harvesting at tunable frequencies. The support structure of the metasurface was fabricated by additive manufacturing. The acoustic absorption coefficient and sound transmission loss of the metasurface can be tuned by optimization of various structural parameters, such as mass, mass size, prestress, membrane thickness, and array arrangement. The impedance tube was used to test the sound absorption ability of the fabricated metasurface, and the numerical simulation agreed well with the experiment, with a minimum acoustic absorption coefficient at ∼400 Hz. A PZT structure was designed and integrated into the acoustic metasurface, transforming the absorbed acoustic energy into electrical energy. Real-time acoustic energy harvesting was realized, and the peak voltage of 1.469 V was successfully monitored under the excitation of 410 Hz. For future applications, the energy harvesting efficiency can be further increased by improving the isolation components of the whole system.
ISSN: 0021-8979
DOI: 10.1063/5.0152949
Schools: School of Mechanical and Aerospace Engineering 
Rights: © 2023 Author(s). Published under an exclusive license by AIP Publishing. All rights reserved. This article may be downloaded for personal use only. Any other use requires prior permission of the copyright holder. The Version of Record is available online at
Fulltext Permission: embargo_20240628
Fulltext Availability: With Fulltext
Appears in Collections:MAE Journal Articles

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