Acoustic Energy Harvesting and Sensing via Electrospun PVDF Nanofiber Membrane

Shehata, Nader; Hassanin, Ahmed H.; Elnabawy, Eman; Nair, Remya; Bhat, Sameer Ahmad; Kandas, Ishac

doi:10.3390/s20113111

Cited by 23 publications

(15 citation statements)

References 31 publications

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“…Several studies have focused on these types of energy harvesters which is an ideal candidate that can be used in micromechanical systems (MEMS), smart structures, wireless sensors, biomedical implants, wearable electronics, bendable devices (Dannier et al, 2019; Kudela et al, 2018; Liu et al, 2018; Song et al, 2017a. Various sources such as solar, wind, thermal energy, mechanical vibrations are available for the energy generations (Caliò et al, 2014; Shehata et al, 2020). In the case of low power electronic devices, the power utilization generally lies in mW or µW range.…”

Section: Introductionmentioning

confidence: 99%

Recent advances in flexible PVDF based piezoelectric polymer devices for energy harvesting applications

Sukumaran

Chatbouri

Rouxel

et al. 2020

Journal of Intelligent Material Systems and Structures

119

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Energy harvesting is one of the most promising research areas to produce sustainable power sources from the ambient environment. Which found applications to attain the extensive lifetime self-powered operations of various devices such as MEMS wireless sensors, medical implants and wearable electronic devices. Piezoelectric nanogenerators can efficiently convert the vastly available mechanical energy into electrical energy to meet the requirements of low-powered electronic devices. Among the piezoelectric materials, poly (vinylidene fluoride) (PVDF) and its copolymers are extensively studied for the development of energy harvesting devices. Due to the outstanding properties such as high flexibility, ease of processing, long-term stability, biocompatibility makes them a promising candidate for piezoelectric generators. Nevertheless, compared to piezoceramic materials, PVDF based generators produce lower piezoresponse. Over the last decades, tremendous research activities have been reported to endorse the performance of PVDF based energy harvesters. This review article mainly focused on the recent progress in the performance improvement with processing methods, piezoelectric materials, different filler loading. The new developments and design structures will lead to an increase in piezoelectricity, alignment of dipoles, dielectric properties and subsequently enhance the output performance of the device. Electronic circuits play a vital role in energy harvesting to efficiently collect the developed charge from the device. Here, we have proposed a detailed description of the electronic circuits. Also, in the application part deals with the recent progress in flexible, biomedical and hybrid generators based on PVDF polymers.

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Section: Introductionmentioning

confidence: 99%

Recent advances in flexible PVDF based piezoelectric polymer devices for energy harvesting applications

Sukumaran

Chatbouri

Rouxel

et al. 2020

Journal of Intelligent Material Systems and Structures

119

View full text Add to dashboard Cite

show abstract

“…These materials are widely used in electromechanical devices because they can convert mechanical energy to electrical energy under pressure or generate mechanical motion by electricity [2,3]. The use of piezoelectric materials for the preparation of micro-electromechanical devices makes it possible to develop miniature resonators [4][5][6][7][8], frequency meters [9] and micro energy supply chips [10][11][12][13][14]. Piezoelectric crystals have a single crystal structure and natural piezoelectricity, such as α-quartz [15,16].…”

Section: Introductionmentioning

confidence: 99%

Composites, Fabrication and Application of Polyvinylidene Fluoride for Flexible Electromechanical Devices: A Review

et al. 2020

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The technological development of piezoelectric materials is crucial for developing wearable and flexible electromechanical devices. There are many inorganic materials with piezoelectric effects, such as piezoelectric ceramics, aluminum nitride and zinc oxide. They all have very high piezoelectric coefficients and large piezoelectric response ranges. The characteristics of high hardness and low tenacity make inorganic piezoelectric materials unsuitable for flexible devices that require frequent bending. Polyvinylidene fluoride (PVDF) and its derivatives are the most popular materials used in flexible electromechanical devices in recent years and have high flexibility, high sensitivity, high ductility and a certain piezoelectric coefficient. Owing to increasing the piezoelectric coefficient of PVDF, researchers are committed to optimizing PVDF materials and enhancing their polarity by a series of means to further improve their mechanical–electrical conversion efficiency. This paper reviews the latest PVDF-related optimization-based materials, related processing and polarization methods and the applications of these materials in, e.g., wearable functional devices, chemical sensors, biosensors and flexible actuator devices for flexible micro-electromechanical devices. We also discuss the challenges of wearable devices based on flexible piezoelectric polymer, considering where further practical applications could be.

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“…To measure the ability of the NF mat for detecting the acoustic signals, a modified version of the previously mentioned piezoelectric setup has been used, a source of acoustic signals (Figure 3), 27 which is a Tektronix function generator of Model AFG1062 with frequency range of 60 MHz and sampling rate of 300 MS/s, is connected through an acoustic amplifier to a speaker. Then, the oscilloscope shows the retraced acoustic signals detected by the NFs mat.…”

Section: Methodsmentioning

confidence: 99%

Solution blow spinning of piezoelectric nanofiber mat for detecting mechanical and acoustic signals

Elnabawy

Farag

Soliman

et al. 2021

J of Applied Polymer Sci

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Solution blow spinning (SBS) technique can produce nanofibers (NFs) mat in large‐scale production. In this work, the SBS was used to fabricate piezoelectric polyvinylidene fluoride (PVDF) NF membranes that can be utilized for energy harvesting applications. The effect of operating air pressure from (2–5 bar) on the surface morphology of the NFs has been studied. The structural analysis for crystalline polymorph β‐phase for PVDF powder, casted film, electrospinning and SBS NFs has also been presented with the aid of Fourier‐transform infrared spectroscopy and X‐ray diffraction (XRD). Piezoelectric characteristics of PVDF NFs mats were tested by applying impact impulse with different weights from different heights between 1 and 10 cm. The sensitivity of the voltage response increased from 1.71 mV/g to 8.98 mV/g, respectively. Besides, the SBS generated PVDF mat is found to be sensitive to pressure forces in a range of few Newtons with the generated voltage according to detected sensitivity of 80 mV/N based on the analysis of the impact of a few Hertz mechanical vibrations. In addition, the produced SBS NFs were applied as an acoustic signal detector within different acoustic frequencies. The results suggest that the β‐phase PVDF nanofibrous membrane produced via the SBS technique has a great potential to be used as a piezoelectric sensor.

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Acoustic Energy Harvesting and Sensing via Electrospun PVDF Nanofiber Membrane

Cited by 23 publications

References 31 publications

Recent advances in flexible PVDF based piezoelectric polymer devices for energy harvesting applications

Recent advances in flexible PVDF based piezoelectric polymer devices for energy harvesting applications

Composites, Fabrication and Application of Polyvinylidene Fluoride for Flexible Electromechanical Devices: A Review

Solution blow spinning of piezoelectric nanofiber mat for detecting mechanical and acoustic signals

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