Hybrid capacitive/piezoelectric visualized meteorological sensor based on in-situ polarized PVDF-TrFE films on TFT arrays

Qian ZHANG; Shuai LIU; Hongqiang LUO; Zhen GUO; Xiaoran HU; Yong XIANG

doi:10.1016/j.sna.2020.112286

Hybrid capacitive/piezoelectric visualized meteorological sensor based on in-situ polarized PVDF-TrFE films on TFT arrays

Qian ZHANG, Shuai LIU, Hongqiang LUO, Zhen GUO, Xiaoran HU^*, Yong XIANG

^*Corresponding author for this work

Research output: Journal Publications › Journal Article (refereed) › peer-review

9 Citations (Scopus)

Abstract

A novel type of hybrid capacitive/piezoelectric sensor was designed and fabricated for real-time monitoring of the size, rate, and frequency of rainfall. The design is based on in situ polarized poly (vinylidene fluoride–trifluoroethylene) (PVDF-TrFE) films on thin-film transistor (TFT) arrays. The polarization of the PVDF-TrFE film with an area of 200 × 200 mm² can be achieved within 5 min using an in-situ polarization process, and the piezoelectric coefficient d₃₃ can reach an average value of 27 pC/N with a uniform distribution across the area. The PVDF-TrFE piezoelectric sensor exhibits high sensitivity, with a raindrop frequency error margin of 1%. The capacitive sensor is composed of the PVDF-TrFE films and TFT arrays, which can be used to determine the size and shape of raindrops on the sensor surface. In addition, the sensor can also be used for high-precision detection of water level, with a resolution of 50 μm.

Original language	English
Article number	112286
Number of pages	8
Journal	Sensors and Actuators, A: Physical
Volume	315
Early online date	5 Sept 2020
DOIs	https://doi.org/10.1016/j.sna.2020.112286
Publication status	Published - 1 Nov 2020
Externally published	Yes

Funding

This work was supported by National Key Research and Development Program of China (2017TFB0702800).

Keywords

In-Situ polarization
PVDF-TrFE
Raindrop sensor
TFT
Visualization

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10.1016/j.sna.2020.112286

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title = "Hybrid capacitive/piezoelectric visualized meteorological sensor based on in-situ polarized PVDF-TrFE films on TFT arrays",

abstract = "A novel type of hybrid capacitive/piezoelectric sensor was designed and fabricated for real-time monitoring of the size, rate, and frequency of rainfall. The design is based on in situ polarized poly (vinylidene fluoride–trifluoroethylene) (PVDF-TrFE) films on thin-film transistor (TFT) arrays. The polarization of the PVDF-TrFE film with an area of 200 × 200 mm2 can be achieved within 5 min using an in-situ polarization process, and the piezoelectric coefficient d33 can reach an average value of 27 pC/N with a uniform distribution across the area. The PVDF-TrFE piezoelectric sensor exhibits high sensitivity, with a raindrop frequency error margin of 1%. The capacitive sensor is composed of the PVDF-TrFE films and TFT arrays, which can be used to determine the size and shape of raindrops on the sensor surface. In addition, the sensor can also be used for high-precision detection of water level, with a resolution of 50 μm.",

keywords = "In-Situ polarization, PVDF-TrFE, Raindrop sensor, TFT, Visualization",

author = "Qian ZHANG and Shuai LIU and Hongqiang LUO and Zhen GUO and Xiaoran HU and Yong XIANG",

year = "2020",

month = nov,

day = "1",

doi = "10.1016/j.sna.2020.112286",

language = "English",

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journal = "Sensors and Actuators, A: Physical",

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T1 - Hybrid capacitive/piezoelectric visualized meteorological sensor based on in-situ polarized PVDF-TrFE films on TFT arrays

AU - ZHANG, Qian

AU - LIU, Shuai

AU - LUO, Hongqiang

AU - GUO, Zhen

AU - HU, Xiaoran

AU - XIANG, Yong

PY - 2020/11/1

Y1 - 2020/11/1

N2 - A novel type of hybrid capacitive/piezoelectric sensor was designed and fabricated for real-time monitoring of the size, rate, and frequency of rainfall. The design is based on in situ polarized poly (vinylidene fluoride–trifluoroethylene) (PVDF-TrFE) films on thin-film transistor (TFT) arrays. The polarization of the PVDF-TrFE film with an area of 200 × 200 mm2 can be achieved within 5 min using an in-situ polarization process, and the piezoelectric coefficient d33 can reach an average value of 27 pC/N with a uniform distribution across the area. The PVDF-TrFE piezoelectric sensor exhibits high sensitivity, with a raindrop frequency error margin of 1%. The capacitive sensor is composed of the PVDF-TrFE films and TFT arrays, which can be used to determine the size and shape of raindrops on the sensor surface. In addition, the sensor can also be used for high-precision detection of water level, with a resolution of 50 μm.

AB - A novel type of hybrid capacitive/piezoelectric sensor was designed and fabricated for real-time monitoring of the size, rate, and frequency of rainfall. The design is based on in situ polarized poly (vinylidene fluoride–trifluoroethylene) (PVDF-TrFE) films on thin-film transistor (TFT) arrays. The polarization of the PVDF-TrFE film with an area of 200 × 200 mm2 can be achieved within 5 min using an in-situ polarization process, and the piezoelectric coefficient d33 can reach an average value of 27 pC/N with a uniform distribution across the area. The PVDF-TrFE piezoelectric sensor exhibits high sensitivity, with a raindrop frequency error margin of 1%. The capacitive sensor is composed of the PVDF-TrFE films and TFT arrays, which can be used to determine the size and shape of raindrops on the sensor surface. In addition, the sensor can also be used for high-precision detection of water level, with a resolution of 50 μm.

KW - In-Situ polarization

KW - PVDF-TrFE

KW - Raindrop sensor

KW - TFT

KW - Visualization

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DO - 10.1016/j.sna.2020.112286

M3 - Journal Article (refereed)

AN - SCOPUS:85090332493

SN - 0924-4247

VL - 315

JO - Sensors and Actuators, A: Physical

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M1 - 112286

ER -

Hybrid capacitive/piezoelectric visualized meteorological sensor based on in-situ polarized PVDF-TrFE films on TFT arrays

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Keywords

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