Piezoelectric Poly(vinylidene fluoride) (PVDF) Polymer-Based Sensor for Wrist Motion Signal Detection

Yao-hui, HU; Kang, Wuwei; Fang, Yong; Xie, Lingrui; Qiu, Longzhen; Jin, Tao

doi:10.3390/app8050836

Cited by 44 publications

(29 citation statements)

References 16 publications

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“…We also consider T 1 , T 2 , and T 3 —tensile stresses and T 4 , T 5 , and T 6 —shear stresses in directions 1, 2, and 3, respectively. The output electrical charge ( Q ) on the surface of the film can be calculated based on the electrode area ( A ) as [ 37 ]:

…”

Section: Piezoelectric Pvdfmentioning

confidence: 99%

“…PVDF-based piezoelectric sensor fabricated by Hu et al consisted of an electrode, substrate, adhesive and protective layer, and backing pad, which served to improve sensitivity by increasing the amplitude of deformation [ 37 ]. Since frequency tests found that a sensor’s sensitivity is reduced below 15 Hz, a preprocessing circuit with a charge amplifier was introduced to improve signal detection.…”

Section: Applications Of Piezoelectric Electrospun Pvdf Filmsmentioning

confidence: 99%

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A Review of Piezoelectric PVDF Film by Electrospinning and Its Applications

Kalimuldina

Turdakyn

Abay

et al. 2020

Sensors

233

124

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With the increase of interest in the application of piezoelectric polyvinylidene fluoride (PVDF) in nanogenerators (NGs), sensors, and microdevices, the most efficient and suitable methods of their synthesis are being pursued. Electrospinning is an effective method to prepare higher content β-phase PVDF nanofiber films without additional high voltage poling or mechanical stretching, and thus, it is considered an economically viable and relatively simple method. This work discusses the parameters affecting the preparation of the desired phase of the PVDF film with a higher electrical output. The design and selection of optimum preparation conditions such as solution concentration, solvents, the molecular weight of PVDF, and others lead to electrical properties and performance enhancement in the NG, sensor, and other applications. Additionally, the effect of the nanoparticle additives that showed efficient improvements in the PVDF films was discussed as well. For instance, additives of BaTiO3, carbon nanotubes, graphene, nanoclays, and others are summarized to show their contributions to the higher piezo response in the electrospun PVDF. The recently reported applications of electrospun PVDF films are also analyzed in this review paper.

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…”

Section: Piezoelectric Pvdfmentioning

confidence: 99%

Section: Applications Of Piezoelectric Electrospun Pvdf Filmsmentioning

confidence: 99%

A Review of Piezoelectric PVDF Film by Electrospinning and Its Applications

Kalimuldina

Turdakyn

Abay

et al. 2020

Sensors

233

124

View full text Add to dashboard Cite

show abstract

“…To increase the sensitivity of the PVDF sensor, we fabricated a half-cylinder backing with flexible silica gel. (27)(28)(29) We fixed the PVDF film on the backing to make it form an arch shape.…”

Section: Operating Principlementioning

confidence: 99%

“…Furthermore, the sensor was easy to wear and could detect the motion of the wrist when a finger was moving. (27) The focus of this study is to identify the feasibility of finger motion recognition based on wrist motion detection, so we choose the sensor made of PVDF piezoelectric film, which is relatively mature in current technology development, as the detection device for wrist motion detection.…”

Section: Introductionmentioning

confidence: 99%

Method of Finger Motion Recognition Based on Polyvinylidene Fluoride Sensor Array

Yao-hui¹,

Xie²,

Chen³

et al. 2019

Sensors and Materials

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Finger motion recognition is one of the key technologies of human-computer interaction based on gestures. In this paper, we propose a method of recognizing finger motions by using a wearable wrist device (WWD). This method not only avoids the problem that the user's hands are limited by wearing motion detection sensors, but also avoids the problem that vision-sensorbased gesture recognition technology is difficult to use in a mobile environment. Moreover, this method, which uses polyvinylidene fluoride (PVDF) sensors as the detection units of WWD, has the advantages of being noninvasive, comfortable, and convenient. In this work, we first studied the distribution and optimization of the PVDF sensor array, and used this array to complete the acquisition of wrist motion signals. Then, we used short-term energy to solve the problems of the real-time detection of motion signals' endpoints and the extraction of motion signal fragments. Then, we encoded these fragments into 64-digit eigenvectors for finger motion recognition. In the experiment, we transmitted the eigenvectors as input values into a four-layer back propagation (BP) network to recognize three essential finger motions for mouse control. The experimental results show that the recognition effect of this method is satisfactory and the recognition accuracy is up to 96.7%.

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“…The choice of PVDF was encouraged by its ability to form homogenous solution with metallic salts. In addition, thanks to the outstanding electroactive properties of its β ‐phase, PVDF and its membranes are important materials with extensively technological applications such as membrane distillation sensors , lithium‐ion battery , energy harvesting , and actuators .…”

Section: Introductionmentioning

confidence: 99%

Physico‐Chemical Characterizations of Poly(vinylidene fluoride)/Cu₃(BTC)₂ Composite Membranes Prepared by In Situ Crystal Growth

Missaoui

Chaplais

Josien

et al. 2019

Polymer Engineering & Sci

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In this work, we present a simple and fast method for elaborating hybrid membranes by growing metal–organic framework crystals inside a polymer solution. The solution thus obtained was casted then annealed at 90°C for 5 h. This method was tested with poly(vinylidene fluoride) (PVDF) as a piezoelectric polymer and the Cu3(BTC)2, BTC = 1,3,5‐benzene tricarboxylate, as a filler. The characterization of the obtained membranes by attenuated total reflectance Fourier transform infrared spectroscopy and X‐ray diffraction showed the presence of the characteristic signatures of Cu3(BTC)2 and the β‐phase of PVDF. Moreover, scanning electron microscopy images reveal that the Cu3(BTC)2 crystallites have grown along the PVDF membranes. The effect of the filler on both thermal and mechanical properties of the membranes was also studied. POLYM. ENG. SCI., 60:464–473, 2020. © 2019 Society of Plastics Engineers

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Piezoelectric Poly(vinylidene fluoride) (PVDF) Polymer-Based Sensor for Wrist Motion Signal Detection

Cited by 44 publications

References 16 publications

A Review of Piezoelectric PVDF Film by Electrospinning and Its Applications

A Review of Piezoelectric PVDF Film by Electrospinning and Its Applications

Method of Finger Motion Recognition Based on Polyvinylidene Fluoride Sensor Array

Physico‐Chemical Characterizations of Poly(vinylidene fluoride)/Cu₃(BTC)₂ Composite Membranes Prepared by In Situ Crystal Growth

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Piezoelectric Poly(vinylidene fluoride) (PVDF) Polymer-Based Sensor for Wrist Motion Signal Detection

Cited by 44 publications

References 16 publications

A Review of Piezoelectric PVDF Film by Electrospinning and Its Applications

A Review of Piezoelectric PVDF Film by Electrospinning and Its Applications

Method of Finger Motion Recognition Based on Polyvinylidene Fluoride Sensor Array

Physico‐Chemical Characterizations of Poly(vinylidene fluoride)/Cu3(BTC)2 Composite Membranes Prepared by In Situ Crystal Growth

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Product

Resources

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Physico‐Chemical Characterizations of Poly(vinylidene fluoride)/Cu₃(BTC)₂ Composite Membranes Prepared by In Situ Crystal Growth