Piezoelectric vibration energy harvesters with stretched and multistacked organic ferroelectric films

Tadao Kajihara; Yoshikazu Ueno; Yuichi Tsujiura; Yasuko Koshiba; Masahiro Morimoto; Isaku Kanno; Kenji Ishida

doi:10.7567/JJAP.56.04CL04

Piezoelectric vibration energy harvesters with stretched and multistacked organic ferroelectric films

Tadao Kajihara, Yoshikazu Ueno, Yuichi Tsujiura, Yasuko Koshiba, Masahiro Morimoto, Isaku Kanno, Kenji Ishida

Electric and Electronic Engineering

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

We investigated piezoelectric vibration energy harvesters with poly(vinylidene fluoride/trifluoroethylene) films and the improved power generation from using multistacked and stretched ferroelectric films on the cantilevers. The energy harvesters generated electric power with a resonant frequency of approximately 25 Hz, which corresponded to the ambient vibration. The power density of four-layered harvesters was estimated to be 2.5μW/m3, which was larger than the power density of previous harvesters. The output power of stretched-film harvesters was 3.6 times the output obtained from unstretched films. In addition, because organic ferroelectric films are flexible, the resonant frequency of each harvester was practically constant even when using the techniques of multistacking and stretching.

Original language	English
Article number	04CL04
Journal	Japanese Journal of Applied Physics
Volume	56
Issue number	4
DOIs	https://doi.org/10.7567/JJAP.56.04CL04
State	Published - 2017/04

ASJC Scopus subject areas

General Engineering
General Physics and Astronomy

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title = "Piezoelectric vibration energy harvesters with stretched and multistacked organic ferroelectric films",

abstract = "We investigated piezoelectric vibration energy harvesters with poly(vinylidene fluoride/trifluoroethylene) films and the improved power generation from using multistacked and stretched ferroelectric films on the cantilevers. The energy harvesters generated electric power with a resonant frequency of approximately 25 Hz, which corresponded to the ambient vibration. The power density of four-layered harvesters was estimated to be 2.5μW/m3, which was larger than the power density of previous harvesters. The output power of stretched-film harvesters was 3.6 times the output obtained from unstretched films. In addition, because organic ferroelectric films are flexible, the resonant frequency of each harvester was practically constant even when using the techniques of multistacking and stretching.",

author = "Tadao Kajihara and Yoshikazu Ueno and Yuichi Tsujiura and Yasuko Koshiba and Masahiro Morimoto and Isaku Kanno and Kenji Ishida",

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T1 - Piezoelectric vibration energy harvesters with stretched and multistacked organic ferroelectric films

AU - Kajihara, Tadao

AU - Ueno, Yoshikazu

AU - Tsujiura, Yuichi

AU - Koshiba, Yasuko

AU - Morimoto, Masahiro

AU - Kanno, Isaku

AU - Ishida, Kenji

PY - 2017/4

Y1 - 2017/4

N2 - We investigated piezoelectric vibration energy harvesters with poly(vinylidene fluoride/trifluoroethylene) films and the improved power generation from using multistacked and stretched ferroelectric films on the cantilevers. The energy harvesters generated electric power with a resonant frequency of approximately 25 Hz, which corresponded to the ambient vibration. The power density of four-layered harvesters was estimated to be 2.5μW/m3, which was larger than the power density of previous harvesters. The output power of stretched-film harvesters was 3.6 times the output obtained from unstretched films. In addition, because organic ferroelectric films are flexible, the resonant frequency of each harvester was practically constant even when using the techniques of multistacking and stretching.

AB - We investigated piezoelectric vibration energy harvesters with poly(vinylidene fluoride/trifluoroethylene) films and the improved power generation from using multistacked and stretched ferroelectric films on the cantilevers. The energy harvesters generated electric power with a resonant frequency of approximately 25 Hz, which corresponded to the ambient vibration. The power density of four-layered harvesters was estimated to be 2.5μW/m3, which was larger than the power density of previous harvesters. The output power of stretched-film harvesters was 3.6 times the output obtained from unstretched films. In addition, because organic ferroelectric films are flexible, the resonant frequency of each harvester was practically constant even when using the techniques of multistacking and stretching.

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Piezoelectric vibration energy harvesters with stretched and multistacked organic ferroelectric films

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