Abstract

Piezoelectret using space-charged porous polymer attracts much attention recently for its softness and high piezoelectric coefficient. It has already been applied to tactile or pressure sensing as well as to kinetic/vibrational energy harvesting. In the present study, a push-button energy harvester based on soft-X-ray charged folded multilayer piezoelectret is proposed. The folded structure with CYTOP-coated parylene-C membranes yields an extremely low stiffness with effective Young’s modulus as low as 14 kPa. With the early prototype, 15.5 µJ/push has been obtained with a maximum force of only 1 N, which corresponds to the record-high piezoelectric coefficient d33 of 30000 pC/N. In addition, LED light-up is also demonstrated upon finger press.

Details

Title
Push-button Kinetic Energy Harvester with Soft-X-ray-charged Folded Multilayer Piezoelectret
Author
J Lu 1 ; Suzuki, Y 1 

 Department of Mechanical Engineering, The University of Tokyo Hongo 7-3-1, Bunkyo-ku, Tokyo 113-8656, Japan 
Publication year
2019
Publication date
Nov 2019
Publisher
IOP Publishing
ISSN
17426588
e-ISSN
17426596
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2568304837
Copyright
© 2019. This work is published under http://creativecommons.org/licenses/by/3.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.