“By integrating frequency interval matching with center-of-gravity optimization, we systematically aligned the harvester’s resonant frequency with the bee’s thorax vibration, enabling efficient energy conversion without compromising flight stability,” Jieliang Zhao, PhD, a professor at the Beijing Institute of Technology and corresponding author of the study revealed.
The resulting piezoelectric energy harvester (PEH) integrates flexible, low-mass PVDF films, a double-crystal design to boost voltage output, and precise tuning to the bees’ natural vibration frequency of 210–220 Hz. According to co-author Jianing Wu from Sun Yat-sen University, the design removes the need for bulky batteries, significantly extending the functional lifespan of insect cyborgs.