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Effects of Substrate on Piezoelectricity of Electrospun Poly(vinylidene fluoride)-Nanofiber-Based Energy Generators SCIE SCOPUS

Title
Effects of Substrate on Piezoelectricity of Electrospun Poly(vinylidene fluoride)-Nanofiber-Based Energy Generators
Authors
Lee, BSPark, BYang, HSHan, JWChoong, CBae, JLee, KYu, WRJeong, UChung, UIPark, JJKim, O
Date Issued
2014-03-12
Publisher
AMER CHEMICAL SOC
Abstract
We report the effects of various substrates and substrate thicknesses on electrospun poly(vinylidene fluoride) (PVDF)-nanofiber-based energy harvesters. The electrospun PVDF nanofibers showed an average diameter of 84.6 +/- 23.5 nm. A high relative beta-phase fraction (85.2%) was achieved by applying high voltage during electrospinning. The prepared PVDF nanofibers thus generated considerable piezoelectric potential in accordance with the sound-driven mechanical vibrations of the substrates. Slide glass, poly(ethylene terephthalate), poly(ethylene naphthalate), and paper substrates were used to investigate the effects of the intrinsic and extrinsic substrate properties on the piezoelectricity of the energy harvesters. The thinnest paper substrate (66 mu m) with a moderate Young's modulus showed the highest voltage output (0.4885 V). We used high-performance 76, 66, and 33 mu m thick papers to determine the effect of paper thickness on the output voltage. The thinnest paper substrate resulted in the highest voltage output (0.7781 V), and the numerical analyses of the sound-driven mechanical deformation strongly support the hypothesis that substrate thickness has a considerable effect on piezoelectric performance.
URI
https://oasis.postech.ac.kr/handle/2014.oak/14171
DOI
10.1021/AM405684M
ISSN
1944-8244
Article Type
Article
Citation
ACS APPLIED MATERIALS & INTERFACES, vol. 6, no. 5, page. 3520 - 3527, 2014-03-12
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정운룡JEONG, UNYONG
Dept of Materials Science & Enginrg
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