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Related Experiment Video

Updated: May 18, 2026

A Polymer-based Piezoelectric Vibration Energy Harvester with a 3D Meshed-Core Structure
09:51

A Polymer-based Piezoelectric Vibration Energy Harvester with a 3D Meshed-Core Structure

Published on: February 20, 2019

Vibration energy harvesting using a piezoelectric circular diaphragm array.

Wei Wang1, Tongqing Yang, Xurui Chen

  • 1Functional Materials Research Laboratory, Tongji University, Shanghai, China.

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
|September 26, 2012
PubMed
Summary

This study demonstrates a piezoelectric circular membrane array for efficient electric energy harvesting from mechanical vibrations. Series and parallel connections allow tailoring impedance for maximum power output in various applications.

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Area of Science:

  • Energy Harvesting
  • Materials Science
  • Electrical Engineering

Background:

  • Mechanical vibrations are a ubiquitous source of wasted energy.
  • Piezoelectric materials offer a promising route for converting mechanical stress into electrical energy.
  • Developing efficient energy harvesting devices is crucial for powering autonomous systems.

Purpose of the Study:

  • To present a novel piezoelectric circular membrane array for enhanced mechanical-to-electrical energy conversion.
  • To investigate the electrical characteristics of the array under dynamic conditions.
  • To optimize power output by exploring series and parallel connection configurations.

Main Methods:

  • Fabrication of a four-plate piezoelectric circular diaphragm array.
  • Experimental examination of electrical characteristics under dynamic vibration.
  • Testing of series and parallel connection configurations with varying load resistors.
  • Measurement of output power under specific frequency, prestress, and acceleration conditions.

Main Results:

  • An optimal load resistor of 160 kΩ yielded 28 mW in series connection at 150 Hz, 0.8 N prestress, and 9.8 m/s² acceleration.
  • A maximal output power of 27 mW was achieved in parallel connection with an 11 kΩ load under identical conditions.
  • The array significantly increased energy output compared to a single piezoelectric plate.

Conclusions:

  • The piezoelectric circular diaphragm array effectively harvests energy from mechanical vibrations.
  • Connection configuration (series/parallel) is critical for impedance matching and maximizing power output.
  • This technology offers a scalable solution for energy harvesting in diverse applications.