Journal
SMART MATERIALS AND STRUCTURES
Volume 25, Issue 4, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0964-1726/25/4/045013
Keywords
acoustic metamaterials; PVDF membrane; energy harvesting
Funding
- NSFC [11521062, 11290153, 11572039]
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Membrane-type acoustic metamaterials are well known for low-frequency sound insulation. In this work, by introducing a flexible piezoelectric patch, we propose sound-insulation metamaterials with the ability of energy harvesting from sound waves. The dual functionality of the metamaterial device has been verified by experimental results, which show an over 20 dB sound transmission loss and a maximum energy conversion efficiency up to 15.3% simultaneously. This novel property makes the metamaterial device more suitable for noise control applications.
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