Development of In-Situ Poled Nanofiber Based Flexible Piezoelectric Nanogenerators for Self-Powered Motion Monitoring

Minjung Kim, Vignesh Krishnamoorthi Kaliannagounder, Afeesh Rajan Unnithan, Chan Hee Park, Cheol Sang Kim, Arathyram Ramachandra Kurup Sasikala

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


Energy harvesting technologies have found significant importance over the past decades due to the increasing demand of energy and self-powered design of electronic and implantable devices. Herein, we demonstrate the design and application of in situ poled highly flexible piezoelectric poly vinylidene fluoride (PVDF) graphene oxide (GO) hybrid nanofibers in aligned mode for multifaceted applications from locomotion sensors to self-powered motion monitoring. Here we exploited the simplest and most versatile method, called electrospinning, to fabricate the in situ poled nanofibers by transforming non-polar ff-phase of PVDF to polar β-phase structures for enhanced piezoelectricity under high bias voltage. The flexible piezoelectric device fabricated using the aligned mode generates an improved output voltage of 2.1 V at a uniform force of 12 N. The effective piezoelectric transduction exhibited by the proposed system was tested for its multiple efficacies as a locomotion detector, bio-e-skin, smart chairs and so on.

Original languageEnglish
Article number3493
JournalApplied Sciences
Issue number10
Publication statusPublished - 18 May 2020

Bibliographical note

Funding Information:
This paper was supported by grant from the Basic Science Research Program through National Research Foundation of Korea (NRF) by Ministry of Education, Science and Technology (Project no. 2016R1D1A1B03934124 and 2019R1A2C1003988) and also partially supported by the program for fostering next-generation researchers in engineering of National Research Foundation of Korea (NRF) funded by the Ministry of Science, (Project no. 2017H1D8A2030449).

Publisher Copyright:
© 2020 by the authors.


  • Electrospinning
  • Graphene oxide
  • Nanogenerator
  • Piezoelectricity
  • Polar ß-phase
  • Poly vinylidene fluoride

ASJC Scopus subject areas

  • General Materials Science
  • Instrumentation
  • General Engineering
  • Process Chemistry and Technology
  • Computer Science Applications
  • Fluid Flow and Transfer Processes


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