Acoustic Metamaterial Nanogenerator for Multi-Band Sound Insulation and Acoustic–Electric Conversion
Xinwu Liang, Ming Yuan · MDPI AG · 2025
An acoustic metamaterial nanogenerator uses multi-local resonance to deliver tunable multi-band sound insulation (up to 40 dB) while converting low-frequency sound into electricity via a TENG.
Plain English summary
Why this matters
Key findings
- Multi-local resonance acoustic metamaterial design mitigates pre-tension effects on the membrane.
- Multi-band sound insulation performance is tunable by adjusting structural parameters.
- Maximum sound insulation reported: 40 dB.
- Average sound insulation reported: >25 dB within the 1000 Hz frequency range.
- A TENG is designed for low-frequency acoustic–electric conversion using the device’s local resonance property.
Limitations
The abstract does not specify device geometry/materials, the exact tuning range, efficiency/voltage/current metrics for the acoustic–electric conversion, durability, or scalability; it also does not compare against specific prior designs.
Publication
- Publisher
- MDPI AG
- Publication date
- November 2, 2025
- Research type
- Paper
- License
- https://creativecommons.org/licenses/by/4.0/
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