Multi-deformable piezoelectric energy nano-generator with high conversion efficiency for subtle body movements

Wearable devices for remote medical systems require a reliable power supply to enable full operation during long-term processes. Piezoelectric generators are promising energy sources that use human body movements to generate energy. The wearable device should be able to easily deform with tiny skin deformations to achieve continual energy generation from standard body movements. However, conventional piezoelectric devices cannot deform sufficiently in response to small movements, resulting in an extremely low energy-conversion efficiency when mounted on the human skin. In this study, we report on an ultrathin piezoelectric energy nano-generator (U-PENG) based on poly(vinylidene fluoride-trifluoroethylene). Owing to their thin structure (4 µm), the proposed U-PENGs conformally adhere to soft human skin and generate energy from subtle movements, such as eye blinking and breathing. These novel devices provide energy conversion efficiency of ~18.85%, which is ~971% higher than thicker samples with identical structures. Owing to their ultrathin structure, high efficiency, and excellent skin attachability, U-PENGs can be integrated with biodevices for use as power sources.


  • NANOEN-D-21-04718.pdf

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Work Title Multi-deformable piezoelectric energy nano-generator with high conversion efficiency for subtle body movements
Open Access
  1. Jihoon Bae
  2. Jinkyu Song
  3. Wooseong Jeong
  4. Koteeswara Reddy Nandanapalli
  5. Nayoung Son
  6. Nora Asyikin Binti Zulkifli
  7. Gihyeok Gwon
  8. Mijin Kim
  9. Seungsun Yoo
  10. Hyeokjun Lee
  11. Hyeokjoo Choi
  12. Seonmin Lee
  13. Huanyu Cheng
  14. Cheolgi Kim
  15. Kyung In Jang
  16. Sungwon Lee
  1. Piezoelectric
  2. Energy nano-generator
  3. Multi-deformable
  4. High energy conversion efficiency
  5. Subtle body movements
License In Copyright (Rights Reserved)
Work Type Article
  1. Nano Energy
Publication Date April 4, 2022
Publisher Identifier (DOI)
Deposited July 19, 2022




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Work History

Version 1

  • Created
  • Added NANOEN-D-21-04718.pdf
  • Added Creator Jihoon Bae
  • Added Creator Jinkyu Song
  • Added Creator Wooseong Jeong
  • Added Creator Koteeswara Reddy Nandanapalli
  • Added Creator Nayoung Son
  • Added Creator Nora Asyikin Binti Zulkifli
  • Added Creator Gihyeok Gwon
  • Added Creator Mijin Kim
  • Added Creator Seungsun Yoo
  • Added Creator Hyeokjun Lee
  • Added Creator Hyeokjoo Choi
  • Added Creator Seonmin Lee
  • Added Creator Huanyu Cheng
  • Added Creator Cheolgi Kim
  • Added Creator Kyung In Jang
  • Added Creator Sungwon Lee
  • Published
  • Updated Keyword, Publication Date Show Changes
    • Piezoelectric, Energy nano-generator, Multi-deformable, High energy conversion efficiency, Subtle body movements
    Publication Date
    • 2022-06-15
    • 2022-04-04