Experimental demonstration of enhanced acoustic energy harvesting with a subwavelength metamaterial plate
In this work, we propose an acoustic energy harvesting metamaterial consisting of an array of silicone rubber pillars and a PZT patch deposited on an ultrathin aluminum plate with several holes based on locally resonant mechanism. The resonance is formed by removing four pillars, drilling a few of h...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2020-01-01
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| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/abcce8 |
| _version_ | 1797750219439341568 |
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| author | Zheng Zhang Qiuyu Li Mourad Oudich Yongdong Pan Yong Li |
| author_facet | Zheng Zhang Qiuyu Li Mourad Oudich Yongdong Pan Yong Li |
| author_sort | Zheng Zhang |
| collection | DOAJ |
| description | In this work, we propose an acoustic energy harvesting metamaterial consisting of an array of silicone rubber pillars and a PZT patch deposited on an ultrathin aluminum plate with several holes based on locally resonant mechanism. The resonance is formed by removing four pillars, drilling a few of holes and attaching the PZT patch on the aluminum plate. The strain energy originating from an incident acoustic wave is centralized in the resonant region, and the PZT patch is used to convert the elastic strain energy into electrical power. Numerical analysis and experimental results show that the proposed millimeter-scale harvester with holes obviously improves the effect of acoustic energy harvesting while performing at the subwavelength scale for sonic low-frequency environment (less than 1150 Hz). In addition, the experimental results demonstrate that the maximum output voltage and power of the proposed acoustic energy harvesting system with 16 holes of 2 mm radius are 3 and 10 times higher than those without holes at the resonant mode for 2 Pa of incident acoustic pressure. Both the number and size of holes have a significant effect on the performance of acoustic energy harvesting. The advantages of the proposed structure are easy-to-machine and full of practicality, and it can be used in broad applications for low-frequency acoustic energy harvesting. |
| first_indexed | 2024-03-12T16:30:30Z |
| format | Article |
| id | doaj.art-688fc2d0f5614b15a69f62c2d652b9af |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:30:30Z |
| publishDate | 2020-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-688fc2d0f5614b15a69f62c2d652b9af2023-08-08T15:32:15ZengIOP PublishingNew Journal of Physics1367-26302020-01-01221212301910.1088/1367-2630/abcce8Experimental demonstration of enhanced acoustic energy harvesting with a subwavelength metamaterial plateZheng Zhang0https://orcid.org/0000-0003-0430-0812Qiuyu Li1Mourad Oudich2Yongdong Pan3Yong Li4https://orcid.org/0000-0001-8049-9128School of Aerospace Engineering and Applied Mechanics, Tongji University , Shanghai 200092, People’s Republic of ChinaSchool of Aerospace Engineering and Applied Mechanics, Tongji University , Shanghai 200092, People’s Republic of ChinaInstitut Jean Lamour, CNRS UMR, Université de Lorraine , 7198, F-54000 Nancy, France; Graduate Program in Acoustics, State College, Penn State University , PA 16801, United States of AmericaSchool of Aerospace Engineering and Applied Mechanics, Tongji University , Shanghai 200092, People’s Republic of ChinaInstitute of Acoustics, School of Physics Science and Engineering, Tongji University , Shanghai 200092, People’s Republic of ChinaIn this work, we propose an acoustic energy harvesting metamaterial consisting of an array of silicone rubber pillars and a PZT patch deposited on an ultrathin aluminum plate with several holes based on locally resonant mechanism. The resonance is formed by removing four pillars, drilling a few of holes and attaching the PZT patch on the aluminum plate. The strain energy originating from an incident acoustic wave is centralized in the resonant region, and the PZT patch is used to convert the elastic strain energy into electrical power. Numerical analysis and experimental results show that the proposed millimeter-scale harvester with holes obviously improves the effect of acoustic energy harvesting while performing at the subwavelength scale for sonic low-frequency environment (less than 1150 Hz). In addition, the experimental results demonstrate that the maximum output voltage and power of the proposed acoustic energy harvesting system with 16 holes of 2 mm radius are 3 and 10 times higher than those without holes at the resonant mode for 2 Pa of incident acoustic pressure. Both the number and size of holes have a significant effect on the performance of acoustic energy harvesting. The advantages of the proposed structure are easy-to-machine and full of practicality, and it can be used in broad applications for low-frequency acoustic energy harvesting.https://doi.org/10.1088/1367-2630/abcce8acoustic metamaterialsenergy harvestingsubwavelength thickness |
| spellingShingle | Zheng Zhang Qiuyu Li Mourad Oudich Yongdong Pan Yong Li Experimental demonstration of enhanced acoustic energy harvesting with a subwavelength metamaterial plate New Journal of Physics acoustic metamaterials energy harvesting subwavelength thickness |
| title | Experimental demonstration of enhanced acoustic energy harvesting with a subwavelength metamaterial plate |
| title_full | Experimental demonstration of enhanced acoustic energy harvesting with a subwavelength metamaterial plate |
| title_fullStr | Experimental demonstration of enhanced acoustic energy harvesting with a subwavelength metamaterial plate |
| title_full_unstemmed | Experimental demonstration of enhanced acoustic energy harvesting with a subwavelength metamaterial plate |
| title_short | Experimental demonstration of enhanced acoustic energy harvesting with a subwavelength metamaterial plate |
| title_sort | experimental demonstration of enhanced acoustic energy harvesting with a subwavelength metamaterial plate |
| topic | acoustic metamaterials energy harvesting subwavelength thickness |
| url | https://doi.org/10.1088/1367-2630/abcce8 |
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