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2016 ; 6
(ä): 22253
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Large Scale Triboelectric Nanogenerator and Self-Powered Pressure Sensor Array
Using Low Cost Roll-to-Roll UV Embossing
#MMPMID26905285
Dhakar L
; Gudla S
; Shan X
; Wang Z
; Tay FE
; Heng CH
; Lee C
Sci Rep
2016[Feb]; 6
(ä): 22253
PMID26905285
show ga
Triboelectric nanogenerators (TENGs) have emerged as a potential solution for
mechanical energy harvesting over conventional mechanisms such as piezoelectric
and electromagnetic, due to easy fabrication, high efficiency and wider choice of
materials. Traditional fabrication techniques used to realize TENGs involve
plasma etching, soft lithography and nanoparticle deposition for higher
performance. But lack of truly scalable fabrication processes still remains a
critical challenge and bottleneck in the path of bringing TENGs to commercial
production. In this paper, we demonstrate fabrication of large scale
triboelectric nanogenerator (LS-TENG) using roll-to-roll ultraviolet embossing to
pattern polyethylene terephthalate sheets. These LS-TENGs can be used to harvest
energy from human motion and vehicle motion from embedded devices in floors and
roads, respectively. LS-TENG generated a power density of 62.5 mW m(-2). Using
roll-to-roll processing technique, we also demonstrate a large scale
triboelectric pressure sensor array with pressure detection sensitivity of 1.33 V
kPa(-1). The large scale pressure sensor array has applications in self-powered
motion tracking, posture monitoring and electronic skin applications. This work
demonstrates scalable fabrication of TENGs and self-powered pressure sensor
arrays, which will lead to extremely low cost and bring them closer to commercial
production.