Acoustic metamaterials capable of both sound insulation and energy harvesting. (14th March 2016)

• Record Type: Journal Article
• Authors: Li, Junfei; Zhou, Xiaoming; Huang, Guoliang; Hu, Gengkai
• Is Part Of: Smart materials and structures. Volume 25:Number 4(2016:Apr.)
• Publication Date: 2016-03-14
• Subjects: acoustic metamaterials -- PVDF membrane -- energy harvesting; Smart materials -- Periodicals; Strucural design -- Periodicals; 620.11
• DOI: 10.1088/0964-1726/25/4/045013
• Languages: English
• ISSNs: 0964-1726

Abstract

Abstract: 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.