# Design of tunable low-frequency acoustic energy harvesting barrier for subway tunnel based on an optimized Helmholtz resonator and a PZT circular plate

> Research article (Energy Reports, 2022) · cited 25× · AI/ML

**Wikidata**: [openalex:W4283655042](https://www.wikidata.org/wiki/openalex:W4283655042)  
**Source**: https://4ort.xyz/entity/design-of-tunable-low-frequency-acoustic-energy-harvesting-barrier-for-subway-tunnel-based-on-an-optimized-helmholtz-res