Acoustic Bubbles as Small-Scale Energy Harvesters for Implantable Medical Devices.

ABSTRACT: Piezoelectric acoustic energy harvesting within the human body has traditionally faced challenges due to insufficient energy levels for biomedical applications. Existing acoustic resonators are often much larger in size, making them impractical for microscale applications. This study investigates the use of acoustically oscillated microbubbles as energy-harvesting resonators. A comparative study was conducted to determine the energy harvested by a freestanding diaphragm and a diaphragm coupled with an oscillating microbubble. The experimental results demonstrated that incorporating a microbubble enabled the flexible piezoelectric diaphragm to harvest seven times more energy than the freestanding diaphragm. These findings were further validated using Laser Doppler Vibrometer (LDV) measureme

SUBMITTER: Li W 

PROVIDER: S-EPMC12029517 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature