Flexible piezoelectric strain energy harvester responsive to multi-directional input forces and its application to self-powered motion sensor

Min Ook Kim, Yongkeun Oh, Yunsung Kang, Kyung Ho Cho, Jungwook Choi, Jongbaeg Kim

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

A design of flexible piezoelectric strain energy harvester responsive to multi-directional forces from arbitrary human motions was developed by using polydimethylsiloxane (PDMS) and polyvinylidene fluoride (PVDF). Unlike the most of conventional strain energy harvesters designed to be functional only for single directional motion, our suggested design demonstrated the energy harvesting capability for all the input forces applied in multiple different directions. The measured output voltage was 1.75, 1.29, and 0.98 V for the input force of 4 N at 2 Hz applied in the direction of 0°, 45°, and 90°, respectively. The variation of output peak voltage was within 54% of the maximum value for the identical magnitude of forces when the applied direction varies from pure normal direction to pure shear direction. The harvester could keep output voltage in the similar order of magnitude upon diverse directional forces applied. Through the harvester mounted on a curved human body, the motion between body and arm was successfully converted to electricity.

Original languageEnglish
Title of host publication2017 IEEE 30th International Conference on Micro Electro Mechanical Systems, MEMS 2017
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages37-40
Number of pages4
ISBN (Electronic)9781509050789
DOIs
Publication statusPublished - 2017 Feb 23
Event30th IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2017 - Las Vegas, United States
Duration: 2017 Jan 222017 Jan 26

Publication series

NameProceedings of the IEEE International Conference on Micro Electro Mechanical Systems (MEMS)
ISSN (Print)1084-6999

Other

Other30th IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2017
CountryUnited States
CityLas Vegas
Period17/1/2217/1/26

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Mechanical Engineering
  • Electrical and Electronic Engineering

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  • Cite this

    Kim, M. O., Oh, Y., Kang, Y., Cho, K. H., Choi, J., & Kim, J. (2017). Flexible piezoelectric strain energy harvester responsive to multi-directional input forces and its application to self-powered motion sensor. In 2017 IEEE 30th International Conference on Micro Electro Mechanical Systems, MEMS 2017 (pp. 37-40). [7863333] (Proceedings of the IEEE International Conference on Micro Electro Mechanical Systems (MEMS)). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/MEMSYS.2017.7863333