A flexible capacitive sensor based on the electrospun PVDF nanofiber membrane with carbon nanotubes

Yang, Xuhong; Wang, Yishou

doi:10.1016/j.sna.2019.111579

Cited by 99 publications

(59 citation statements)

References 35 publications

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“…Meanwhile, these implementations commonly experience a significant reduction in sensitivity with the increase of measurement range, resulting in poor linearity or piecewise linearity for both low-pressure and medium pressure ranges. The sensor prototypes in [7,26,27] can achieve high sensitivity values, however, the sensing ranges are quite limited in the lowpressure range (less than 10 kPa). The sensor sensitivity in [28] is relatively high in 0-10 kPa, but suffers from a significant drop for the remaining medium pressure range of 10-100 kPa.…”

Section: F Discussionmentioning

confidence: 99%

A Novel Capacitive-Based Flexible Pressure Sensor Based on Stretchable Composite Electrodes and a Dielectric Elastomer With Microstructures

et al. 2020

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This paper presents a novel capacitive-based flexible pressure sensor that achieves a relatively high sensitivity with an outstanding linearity over a large measurement range, as well as lowpressure detection capacity. The proposed sensor mainly consists of two flexible conductive composite electrodes and one micro-structured elastomer with both pillars and cavities. The highly stretchable modal fabrics and carbon nanotubes conductive paste have been proposed for mixture to generate flexible capacitor electrode plates, and provide improved attributes in terms of excellent flexibility, conductivity, and air permeability. The micro-structured elastomers have been proposed and fabricated via demolding the silicone poured into the high-precision patterns that are produced by the 3D printing techniques. The exerted compression on assembled sensor prototype can induce decreased distance between electrode plates and increased dielectric constant due to the air deflation, leading to enhanced sensor sensitivity. By comparing three types of microstructures for the elastomers, it is found that the cubic-structure type can achieve a high sensitivity (232*10 -4 kPa -1 ) with an excellent linearity of 99.4% in the measurement range of [0 kPa, 100 kPa]. The proposed flexible sensor has been prototyped, and several experiments have been performed for quantitative investigation and assessment. The grasp-and-release operations of a water-filled paper cup have been performed using a wearable glove embedded with two sensor prototypes, proving the effectiveness and feasibility of the proposed sensor design.

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Section: F Discussionmentioning

confidence: 99%

A Novel Capacitive-Based Flexible Pressure Sensor Based on Stretchable Composite Electrodes and a Dielectric Elastomer With Microstructures

et al. 2020

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“…This sensor design has superior properties since it does not require an external power source and contact to measure pressure values [ 139 ]. Recently, Yang et al introduced a flexible capacitive pressure sensor with high sensitivity of 0.99/kPa, based on PVDF nanofilm prepared by electrospinning [ 140 ]. It was found that the addition of 0.05 wt.% of CNT allows fabricating sensors with excellent response time (~29 ms), reliability, and life cycle.…”

Section: Applications Of Piezoelectric Electrospun Pvdf Filmsmentioning

confidence: 99%

“…( d ) Plots showing the relative changes in capacitance of the sensor when it was subjected to dynamic pressing and releasing cycles. Reprinted with permission from [ 140 ].…”

Section: Figurementioning

confidence: 99%

A Review of Piezoelectric PVDF Film by Electrospinning and Its Applications

Kalimuldina

Turdakyn

Abay

et al. 2020

Sensors

199

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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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“…Among them, electrospinning is the most efficient method that can produce nanofibers from a variety of polymers. Due to nanofibers morphological characteristics, they exhibit numerous advantages, which made them suitable for their application in various fields such as air filtration systems [17][18][19][20], sensing devices [21,22], reinforcement composite [23], tissue engineering [24], energy storage systems [25], optical [23], drug delivery [26], catalyst [27], water treatment [28], and so forth.…”

Section: Introductionmentioning

confidence: 99%

A Review on Electrospun PVC Nanofibers: Fabrication, Properties, and Application

Pham

Uspenskaya

Olekhnovich

et al. 2021

Fibers

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Polyvinyl chloride (PVC) is a widely used polymer, not only in industry, but also in our daily life. PVC is a material that can be applied in many different fields, such as building and construction, health care, and electronics. In recent decades, the success of electrospinning technology to fabricate nanofibers has expanded the applicability of polymers. PVC nanofibers have been successfully manufactured by electrospinning. By changing the initial electrospinning parameters, it is possible to obtain PVC nanofibers with diameters ranging from a few hundreds of nanometers to several micrometers. PVC nanofibers have many advantages, such as high porosity, high mechanical strength, large surface area, waterproof, and no toxicity. PVC nanofibers have been found to be very useful in many fields with a wide variety of applications such as air filtration systems, water treatment, oil spill treatment, batteries technology, protective clothing, corrosion resistance, and many others. This paper reviews the fabricating method, properties, applications, and prospects of PVC nanofibers.

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A flexible capacitive sensor based on the electrospun PVDF nanofiber membrane with carbon nanotubes

Cited by 99 publications

References 35 publications

A Novel Capacitive-Based Flexible Pressure Sensor Based on Stretchable Composite Electrodes and a Dielectric Elastomer With Microstructures

A Novel Capacitive-Based Flexible Pressure Sensor Based on Stretchable Composite Electrodes and a Dielectric Elastomer With Microstructures

A Review of Piezoelectric PVDF Film by Electrospinning and Its Applications

A Review on Electrospun PVC Nanofibers: Fabrication, Properties, and Application

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