PVDF-BaTiO3 Nanocomposite Inkjet Inks with Enhanced β-Phase Crystallinity for Printed Electronics

Abdolmaleki, Hamed; Agarwala, Shweta

doi:10.3390/polym12102430

Cited by 57 publications

(35 citation statements)

References 34 publications

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“…Both piezoelectric single crystals and piezoelectric ceramics are brittle materials. The piezoelectric polymer film represented by polyvinylidene fluoride (PVDF) has strong piezoelectricity and flexibility; in particular, the acoustic impedance is close to that of water and biological tissues and is a good material for making sensors (Abdolmaleki and Agarwala, 2020). Piezoelectric composite materials of piezoelectric ceramics and polymers have also been used in the field of piezoelectric sensors (Oh et al, 2020).…”

Section: Piezoelectric Transducermentioning

confidence: 99%

Bite Force Transducers and Measurement Devices

Bai

Xie

2021

Front. Bioeng. Biotechnol.

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In dental research, bite force has become an important curative effect evaluation index for tooth restoration, periodontal treatment, and orthodontic treatment. Bite force is an important parameter to evaluate the efficacy of the masticatory system. Physicians obtain the therapeutic basis for occlusal adjustment by measuring the bite force and the dynamic changes in occlusal contact at different stages of treatment and objectively evaluate the therapeutic effect. At present, many devices are used to record the bite force. Most of these devices use force transducers to detect bite force, such as strain gauge transducers, piezoresistive transducers, piezoelectric transducers, optical fiber transducers, and pressure-sensitive films. This article summarizes the various equipment used to record bite force, related materials and the characteristics of this equipment. It provides a reference for physicians to make choices during the clinical process and at the same time provides a basis for the development of new occlusal force measurement materials.

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Section: Piezoelectric Transducermentioning

confidence: 99%

Bite Force Transducers and Measurement Devices

Bai

Xie

2021

Front. Bioeng. Biotechnol.

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“…Polymeric materials as additives have rapidly attracted considerable attention for application in organic electronics [ 1 , 2 , 3 , 4 , 5 ]. When they are blended with organic semiconductors, those polymers demonstrate various merits in controlling the crystal growth, enhancing the semiconductor morphology, and improving the electrical performance of organic thin film transistors (OTFTs) [ 6 , 7 ].…”

Section: Introductionsmentioning

confidence: 99%

Polyferrocenylsilane Semicrystalline Polymer Additive for Solution-Processed p-Channel Organic Thin Film Transistors

Zhang

Asare‐Yeboah

et al. 2021

Polymers

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In this study, we demonstrated for the first time that a metal-containing semicrystalline polymer was used as an additive to mediate the thin film morphology of solution-grown, small-molecule organic semiconductors. By mixing polyferrocenylsilane (PFS) with an extensively-studied organic semiconductor 6,13-bis(triisopropylsilylethynyl) pentacene (TIPS pentacene), PFS as a semicrystalline polymer independently forms nucleation and crystallization while simultaneously ameliorating diffusivity of the blend system and tuning the surface energies as a result of its partially amorphous property. We discovered that the resultant blend film exhibited a 6-fold reduction in crystal misorientation angle and a 3-fold enlargement in average grain width. Enhanced crystal orientation considerably reduces mobility variation, while minimized defects and trap centers located at grain boundaries lessen the adverse impact on the charge transport. Consequently, bottom-gate, top-contact organic thin film transistors (OTFTs) based on the TIPS pentacene/PFS mixture yielded a 40% increase in performance consistency (represented by the ratio of average mobility to the standard deviation of mobility). The PFS semicrystalline polymer-controlled crystallization can be used to regulate the thin film morphology of other high-performance organic semiconductors and shed light on applications in organic electronic devices.

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“…The combination of both provides enhanced dielectric properties depending on the type and nature of polymer matrices as well as fillers [ 28 ]. Adding 5 wt % of BaTiO3 had the highest β-phase crystallinity for nanocomposite inkjet inks [ 29 ]. The PVDF-HFP (hexafluoropropylene)/PVDF (core/shell) containing ZnO and TiO2 nanoparticles exhibits a maximum output voltage of 14 V [ 30 ].…”

Section: Introductionmentioning

confidence: 99%

Nanofibers-Based Piezoelectric Energy Harvester for Self-Powered Wearable Technologies

et al. 2020

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The demands for wearable technologies continue to grow and novel approaches for powering these devices are being enabled by the advent of new energy materials and novel manufacturing strategies. In addition, decreasing the energy consumption of portable electronic devices has created a huge demand for the development of cost-effective and environment friendly alternate energy sources. Energy harvesting materials including piezoelectric polymer with its special properties make this demand possible. Herein, we develop a flexible and lightweight nanogenerator package based on polyvinyledene fluoride (PVDF)/LiCl electrospun nanofibers. The piezoelectric performance of the developed nanogenator is investigated to evaluate effect of the thickness of the as-spun mat on the output voltage using a vibration and impact test. It is found that the output voltage increases from 1.3 V to 5 V by adding LiCl as additive into the spinning solution compared with pure PVDF. The prepared PVDF/LiCl nanogenerator is able to generate voltage and current output of 3 V and 0.5 μA with a power density output of 0.3 μW cm−2 at the frequency of 200 Hz. It is found also that the developed nanogenerator can be utilized as a sensor to measure temperature changes from 30 °C to 90 °C under static pressure. The developed electrospun temperature sensor showed sensitivity of 0.16%/°C under 100 Pa pressure and 0.06%/°C under 220 Pa pressure. The obtained results suggested the developed energy harvesting textiles have promising applications for various wearable self-powered electrical devices and systems.

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PVDF-BaTiO3 Nanocomposite Inkjet Inks with Enhanced β-Phase Crystallinity for Printed Electronics

Cited by 57 publications

References 34 publications

Bite Force Transducers and Measurement Devices

Bite Force Transducers and Measurement Devices

Polyferrocenylsilane Semicrystalline Polymer Additive for Solution-Processed p-Channel Organic Thin Film Transistors

Nanofibers-Based Piezoelectric Energy Harvester for Self-Powered Wearable Technologies

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