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Proceedings Paper

A highly flexible piezoelectret-fiber pressure sensor based on highly aligned P(VDF-TrFE) electrospun fibers
Author(s): Jun-Yi Ke; Hsin-Jung Chu; Yu-Hsiang Hsu; Chih-Kung Lee
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Paper Abstract

P(VDF-TrFE) is a ferroelectric material having a strong piezoelectric effect, a good chemical stability, chemical resistance and biocompatibility. Therefore, it is suitable for the development of flexible pressure sensors in biological applications. Using electrospinning method and a drum collector, P(VDF-TrFE) nanofibers are aligned and formed an ultrathin film sheet with a thickness of 15 to 30 μm. A 140 °C annealing process and a corona discharge poling process are conducted to increase the performance of β phase piezoelectricity. Based on this technology, a highly flexible piezoelectret pressure sensor is developed for measuring muscle movement on the surface of human body. The orientation of electrospun P(VDFTrFE) fibers and poling direction are studied to enhance the sensitivity of the piezoelectret-fiber pressure sensor. Preliminary study shows that the sensitivity of piezoelectret-fiber pressure sensor can be 110.37 pC/Pa with a high signal to noise ratio. Sensor design, experimental studies, and biological application are detailed in this paper.

Paper Details

Date Published: 11 April 2017
PDF: 6 pages
Proc. SPIE 10164, Active and Passive Smart Structures and Integrated Systems 2017, 101642X (11 April 2017); doi: 10.1117/12.2259854
Show Author Affiliations
Jun-Yi Ke, National Taiwan Univ. (Taiwan)
Hsin-Jung Chu, National Taiwan Univ. (Taiwan)
Yu-Hsiang Hsu, National Taiwan Univ. (Taiwan)
Chih-Kung Lee, National Taiwan Univ. (Taiwan)


Published in SPIE Proceedings Vol. 10164:
Active and Passive Smart Structures and Integrated Systems 2017
Gyuhae Park, Editor(s)

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