Development of piezoelectric coaxial filament sensors P(VDF-TrFE)/copper for textile structure instrumentation

Kechiche, Mohamed Bouraoui; Bauer, F.; Harzallah, Omar; Dréan, Jean-Yves

doi:10.1016/j.sna.2013.10.007

Cited by 36 publications

(32 citation statements)

References 20 publications

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“…The fiber‐based piezoelectric systems described to date have demonstrated only limited flexibility and very small extensibility. Kechiche et al . and Lee et al .…”

Section: The Fpf Power Transferred To An External Load Can Be Estimatmentioning

confidence: 96%

“…have both developed coaxial fibers consisting of a layer of piezoelectric materials sandwiched between a conducting core and an outer sheath electrode. These fibers could be woven into a textile structure and deformed by bending to a small strain of ≈0.1% However, small radius bending as occurs in knitting and high strain elastic stretching were not yet demonstrated. Kim et al have recently described highly stretchable piezoelectric films formed by laminating polyvinylidene fluoride (PVDF) between a conducting, corrugated elastomeric substrate and a thin graphene layer.…”

Section: The Fpf Power Transferred To An External Load Can Be Estimatmentioning

confidence: 99%

“…Electrospinning was chosen as the means for producing the piezoelectric PVDF–TrFE mats since fiber formation and piezoelectric poling occur simultaneously, unlike in processes such as fiber melt extrusion where a separate poling stage is needed The high electric field strengths in electrospinning are known to induce the phase transition from non polarized α ‐ phase to polarized β‐phase in PVDF–TrFE (Figure S3). The induced polarization direction in the as‐spun mats produces a strong piezoelectric response in the mat thickness direction (Figure S4).…”

Section: The Fpf Power Transferred To An External Load Can Be Estimatmentioning

confidence: 99%

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Flexible, stretchable and weavable piezoelectric fiber

et al. 2015

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Various 'wearable technologies' for personal activity monitoring have recently been released to the consumer market with great success. The desire of developers of such devices to increase functionality while reducing size and weight is currently constrained by the energy demands of the on-board electronics. The ideal solution would be to harness electrical energy from the wearer, such as through heat or movement. Piezoelectric modules are attractive for converting mechanical energy to electrical energy and various flexible systems have been developed to capture energy from bending motions associated with heartbeat, [1,2] respiration, [3] muscle stretching, [4,5] and eye blinking. [6] Ideally, energy harvesting garments should be elastically stretchable as well as bendable to ensure a close fit, enhance wearer comfort, and increase the range of human motions accessible for energy recovery. Stretch fabrics gain their high strain elasticity from a combination of knitted fiber bending and stretching of highly elastic fibers, such as elastane, which provides a restoring force. What are needed are robust piezoelectric fibers that demonstrate both high flexibility and high stretchability for incorporation into smart garments.The fiber-based piezoelectric systems described to date have demonstrated only limited flexibility and very small extensibility. Kechiche et al. [7] and Lee et al. [8] have both developed coaxial fibers consisting of a layer of piezoelectric materials sandwiched between a conducting core and an outer sheath electrode. These fibers could be woven into a textile structure [7] and deformed by bending to a small strain of %0.1% [8] However, small radius bending as occurs in knitting and high strain elastic stretching were not yet demonstrated. Kim et al. [9] have recently described highly stretchable piezoelectric films formed by laminating polyvinylidene fluoride (PVDF) between a conducting, corrugated elastomeric substrate and a thin graphene layer. The laminate could be stretched to 30% without damage but fibers have not yet been prepared.Here we introduce a novel composite material system and a method for constructing flexible, stretchable and weavable piezoelectric energy-generating fibers. The flexible piezoelectric fibers (FPFs) can be stretched to a tensile strain of 5% and can generate over 50 mW/cm 3 . The FPFs are sufficiently robust for knotting, sewing, and weaving and can also be converted to piezoelectric coils by twist insertion. These spring-like coils can be reversibly stretched to 50% strain without failure.FPF energy generators were fabricated in a four stage process, as illustrated in Figure 1a, b. Firstly, electrospun mats were prepared from polyvinylidene fluoride-cotrifluoroethylene (PVDF-TrFE) as randomly oriented nanofibers of 750 nm average diameter (Figure 1c) and to a mat thickness of %30 mm. The electrospun mats were next manually wrapped around a multifilament silver coated nylon yarn that acted as the inner electrode. The outer electrode was formed by wrapping with carbo...

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“…The fiber‐based piezoelectric systems described to date have demonstrated only limited flexibility and very small extensibility. Kechiche et al . and Lee et al .…”

Section: The Fpf Power Transferred To An External Load Can Be Estimatmentioning

confidence: 96%

Section: The Fpf Power Transferred To An External Load Can Be Estimatmentioning

confidence: 99%

Section: The Fpf Power Transferred To An External Load Can Be Estimatmentioning

confidence: 99%

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Flexible, stretchable and weavable piezoelectric fiber

et al. 2015

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“…Piezoceramics are mechanically strong, hard, chemically inert, and immune to humidity, exhibiting high level of inherent piezoelectric characteristics. Piezopolymers means piezoelectric class of organic polymers, such as polyamide 11 (PA‐11), polypropylene (PP), poly(vinylidene fluoride) (PVDF) and its copolymer poly(vinylidene fluoride‐ co ‐tri‐fluoroethylene) (PVDF–TrFE) . Among these piezopolymers, PVDF is a semicrystalline polymer with up to five different crystal phases, i.e., α, β, γ, δ, and ε.…”

Section: Piezoelectric Nanogeneratorsmentioning

confidence: 99%

Fiber/Fabric‐Based Piezoelectric and Triboelectric Nanogenerators for Flexible/Stretchable and Wearable Electronics and Artificial Intelligence

2019

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fields is breaking out, such as the Internet of Things (IoTs), big data, humanoid robotics, and artificial intelligence (AI). Nowadays, the rapid advancement of these functional electronic devices is transforming the way people communicate with each other and with their surroundings, which has integrated our world into an intelligent information network. Owing to that no electronics works without electricity, the processes of human informatization and intelligence depend on broad energy supplies and powerful power supports. In other words, electric power can be regarded as the flowing blood that keeps every components of the current society running normally and healthily. However, with the rapid consumption of conventional fossil fuels as well as the growing voice of environmental protection, the current energy structure and its supply status are facing unprecedented challenges. On the one hand, the overwhelming energy crisis and ecological deterioration have become huge bottlenecks restricting socioeconomic development.[1] Some serious situations may even worsen to the root of interstate interest conflicts or the disaster that threatens the survival of mankind. In this case, the transform of energy structure from scarce, pollution-prone, and irreproducible mineral resources to abundant, environmentally friendly, and renewable green energies is desperately required. On the other hand, the traditional centralized, immobile, and ordered energy supply patterns based on power plants are incompatible with the present development of functional electronics associated with individual person, which follows a general trend of miniaturization, portability, and low power. As the information age is coming, billions of things must be connected with sensors for various measurements, perceptions, controls, and data transmissions. [2] These mobile, human-oriented, randomly and massively distributed sensing networks also require the corresponding matched power supply system. Therefore, it turns out that the unreasonable energy structures as well as the mismatched supply pattern lead to the current development dilemma.Portable power supplies and self-powered systems are the most promising solutions for the above straits. For wearable power sources, one of the compromises is to choose small-size Integration of advanced nanogenerator technology with conventional textile processes fosters the emergence of textile-based nanogenerators (NGs), which will inevitably promote the rapid development and widespread applications of next-generation wearable electronics and multifaceted artificial intelligence systems. NGs endow smart textiles with mechanical energy harvesting and multifunctional self-powered sensing capabilities, while textiles provide a versatile flexible design carrier and extensive wearable application platform for their development. However, due to the lack of an effective interactive platform and communication channel between researchers specializing in NGs and those good at textiles, it is rather difficult to achieve fiber...

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“…Tensile melt extruding is another effective way to generate metal-core PVDF and PVDF-TrFE fibers. 17,18 This method first places a metal filament in the center of melting PVDF or PVDF-TrFE, and then extrudes the polymer along with pulling the metal filament. Because the metal filament is kept in the center, PVDF or PVDF-TrFE fiber with metal core can be finally produced.…”

Section: Introductionmentioning

confidence: 99%

Polymeric piezoelectric fiber with metal core produced by electrowetting‐aided dry spinning method

Liu

Chen

Ruan

et al. 2016

J of Applied Polymer Sci

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An electrowetting-aided dry spinning method is developed to produce morphologically stable polymeric piezoelectric fibers with a metal core covered by a beta-phase poly(vinylidene fluoride) [or poly(vinylidene-trifluoroethylene)] layer. Each fiber consists of a 100 lm copper core (enameled with 6 lm polyester-imide), a 3-10 lm piezoelectric layer, and a sputtered 100 nm gold electrode. The morphological properties of the fibers are analyzed with scanning electron microscopy, X-ray diffraction, and a step profiler. The piezoelectric properties are tested in a vibration-detecting application. Both morphological observation and piezoelectric testing demonstrate that the electrowetting-aided dry spinning helps in forming high-quality polymeric piezoelectric fibers. Moreover, this method can also be applied in different fabrications, where adhesion between a liquid and solid surface needs to be enhanced.

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Development of piezoelectric coaxial filament sensors P(VDF-TrFE)/copper for textile structure instrumentation

Cited by 36 publications

References 20 publications

Flexible, stretchable and weavable piezoelectric fiber

Flexible, stretchable and weavable piezoelectric fiber

Fiber/Fabric‐Based Piezoelectric and Triboelectric Nanogenerators for Flexible/Stretchable and Wearable Electronics and Artificial Intelligence

Polymeric piezoelectric fiber with metal core produced by electrowetting‐aided dry spinning method

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