Work

Acoustic energy harvesting based on Friedrich–Wintgen bound state in the continuum with bridged near-field coupling

Year: 2025

Type: article

Abstract: In this work, we have designed and fabricated a symmetry-protected acoustic bound state in the continuum (QBIC) metamaterial that allows for simple modulation, with its operating frequency precisely controlled through the coupling coefficient κ. Due to the extremely high Q factor of QBIC, propagating waves can be converted into bound states, allowing for efficient localization of acoustic waves and energy harvesting. Subsequently, a piezoelectric composite sheet (PCS) is placed in the antenna region for acoustic energy collection. Numerical simulations and experimental results confirm that the sound pressure is amplified by 12 times compared to the incident wave, and the output power of a single PCS is increased by 50 times. Our work provides a simple and efficient energy-harvesting method with low directional requirements for the incident waves, demonstrating strong potential for practical applications.

Source: Journal of Applied Physics

DOI: 10.1063/5.0267201

Authors: Chang-Chun Wang, Ning-Wo Pei, Long-Fa Zhang, Shi-Feng Li, Xin-Ye Zou, Jian-Chun Cheng

Institutions: Collaborative Innovation Center of Advanced Microstructures, Nanjing University

Language: English

Topic: Acoustic Wave Phenomena Research

Subfield: Biomedical Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: hybrid

Estimated APC paid: $3,500