Improvement of the electroactive<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si1.svg"><mml:mi>β</mml:mi></mml:math>-phase nucleation and piezoelectric properties of PVDF-HFP thin films influenced by TiO2 nanoparticles

Chakhchaoui, Nabil; Farhan, R.; Eddiai, Adil; Meddad, Mounir; Cherkaoui, Omar; Mazroui, M.; Boughaleb, Y.; Langenhove, Lieva Van

doi:10.1016/j.matpr.2020.05.407

Cited by 42 publications

(33 citation statements)

References 24 publications

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“…This paper has investigated the development of a novel energy harvesting systems, which are a clean and durable solution, based on the thin film PVDF sticking on flexible substrates such as fabrics. The smart structure shows greater piezoelectric and dielectric properties compared to our previous work [45][46][47][48][49][50]. These properties are explored and discussed in this paper.…”

Section: Introductionmentioning

confidence: 88%

Flexible Smart Material With Excellent Energy Harvesting<strong> </strong>

Chakhchaoui¹,

Farhan²,

Chu³

et al. 2021

Preprint

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The field of power harvesting has experienced significant growth over the past few years due to the ever-increasing desire to produce portable and wireless electronics with extended lifespans. The present work aims to introduce an approach to harvesting electrical energy from a mechanically excited piezoelectric element and investigates a power analytical model generated by a smart structure of type polyvinylidene fluoride(PVDF) that can be stuck onto fabrics and flexible substrates, although we report the effects of various substrates and investigates the sticking of these substrates on the characterization of the piezoelectric material.

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Section: Introductionmentioning

confidence: 88%

Flexible Smart Material With Excellent Energy Harvesting<strong> </strong>

Chakhchaoui¹,

Farhan²,

Chu³

et al. 2021

Preprint

Self Cite

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“…Over years, researchers have made many attempts in energy harvesting based on piezoelectric polymer materials. [ 52–55 ]…”

Section: Materials Fabrication and Performance Enhancementmentioning

confidence: 99%

Piezoelectric Nanogenerators Derived Self‐Powered Sensors for Multifunctional Applications and Artificial Intelligence

Cao

Xiong

Sun

et al. 2021

Adv Funct Materials

230

111

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With the arrival of the Internet of Things (IoTs) era, there is a growing requirement for systems with many sensor nodes in a variety of fields of applications. The demands for wireless, sustainable and independent operation are becoming more and more important for large‐scale sensor networks and systems. For these purposes, a self‐powered sensory system that can utilize the self‐harvested energy from its surroundings to drive the sensors and directly sense external stimuli has attracted great attention. The invention and rapid development of piezoelectric generators (PENGs), which take Maxwell's displacement current as the driving force, has been pushing forward research on self‐powered active mechanical sensors, electronic skins, and human‐robotic interaction. Here, this review starts with a brief introduction of piezoelectric materials, fabrication, and performance improvement. Then, the energy harvesters used for self‐power systems based on recent progress are reviewed. After that, PENGs applications toward recent self‐powered active sensors are divided into four aspects and highlighted, respectively. Moreover, some challenges and future directions for the self‐powered multifunctional sensors are put forward. It is believed that through the continuous investigations into PENG‐based self‐powered active sensors, they will soon be used in touch screens, electronic skins, health care, environmental monitoring, and intelligence systems.

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“…Meanwhile, they suffer from several drawbacks such as rigidity, brittleness, and inferior compatibility with the human body [ 29 ] , which limits the applications in soft, wearable electronics. In comparison with the inorganic piezoelectric oxides, the piezoelectric polymers, such as PVDF, PVDF‐TrFE, and P(VDF‐HFP) [ 30 , 31 , 32 , 33 , 34 , 35 ] are mechanically flexible and bio‐compatible but exhibit weak piezoelectricity (typically 10–30 pC N −1 ). Therefore, a combination of high piezoelectricity inorganic piezoelectric oxides and high flexibility organic polymer matrixes offers a feasible route to overcome these shortcomings and synergize the merits of the polymers and piezoelectric oxides.…”

Section: Introductionmentioning

confidence: 99%

Optimizing Piezoelectric Nanocomposites by High‐Throughput Phase‐Field Simulation and Machine Learning

Yang

Liu

et al. 2022

Advanced Science

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Piezoelectric nanocomposites with oxide fillers in a polymer matrix combine the merit of high piezoelectric response of the oxides and flexibility as well as biocompatibility of the polymers. Understanding the role of the choice of materials and the filler-matrix architecture is critical to achieving desired functionality of a composite towards applications in flexible electronics and energy harvest devices. Herein, a high-throughput phase-field simulation is conducted to systematically reveal the influence of morphology and spatial orientation of an oxide filler on the piezoelectric, mechanical, and dielectric properties of the piezoelectric nanocomposites. It is discovered that with a constant filler volume fraction, a composite composed of vertical pillars exhibits superior piezoelectric response and electromechanical coupling coefficient as compared to the other geometric configurations. An analytical regression is established from a linear regression-based machine learning model, which can be employed to predict the performance of nanocomposites filled with oxides with a given set of piezoelectric coefficient, dielectric permittivity, and stiffness. This work not only sheds light on the fundamental mechanism of piezoelectric nanocomposites, but also offers a promising material design strategy for developing high-performance polymer/inorganic oxide composite-based wearable electronics.

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Improvement of the electroactiveβ-phase nucleation and piezoelectric properties of PVDF-HFP thin films influenced by TiO2 nanoparticles

Cited by 42 publications

References 24 publications

Flexible Smart Material With Excellent Energy Harvesting<strong> </strong>

Flexible Smart Material With Excellent Energy Harvesting<strong> </strong>

Piezoelectric Nanogenerators Derived Self‐Powered Sensors for Multifunctional Applications and Artificial Intelligence

Optimizing Piezoelectric Nanocomposites by High‐Throughput Phase‐Field Simulation and Machine Learning

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