Multifunctional transducer using poly (vinylidene fluoride) active layerand highly conducting poly (3,4-ethylenedioxythiophene) electrode: Actuator and generator

Lee, C. S.; Joo, Jin; Han, Sung Hee; Koh, Seok‐Keun

doi:10.1063/1.1784890

Cited by 56 publications

(44 citation statements)

References 18 publications

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“…Furthermore, it is observed in the literature that combined mechanical and electrical loading might lead to premature cracking in piezoelectric materials, which markedly affects their behavior 14. Certain studies have demonstrated the fabrication of flexible piezoelectric sensors or actuators but require special techniques, thus making it uneconomical for large‐scale synthesis 15, 16. Although other materials were also used for flexible strain sensors, they lack the unique properties of piezoelectric materials or involve complicated fabrication techniques.…”

Section: Introductionmentioning

confidence: 99%

Flexible Piezoelectric ZnO–Paper Nanocomposite Strain Sensor

Gullapalli

Vemuru

Kumar

et al. 2010

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335

244

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The fabrication of a mechanically flexible, piezoelectric nanocomposite material for strain sensing applications is reported. Nanocomposite material consisting of zinc oxide (ZnO) nanostructures embedded in a stable matrix of paper (cellulose fibers) is prepared by a solvothermal method. The applicability of this material as a strain sensor is demonstrated by studying its real-time current response under both static and dynamic mechanical loading. The material presented highlights a novel approach to introduce flexibility into strain sensors by embedding crystalline piezoelectric material in a flexible cellulose-based secondary matrix.

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Section: Introductionmentioning

confidence: 99%

Flexible Piezoelectric ZnO–Paper Nanocomposite Strain Sensor

Gullapalli

Vemuru

Kumar

et al. 2010

Small

335

244

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“…57 These materials can be used for their increased flexibility and resistance to cracking compared with PZT. 60,61 Furthermore, one investigation has focused on the use of lead magnesium niobatelead titanate (PMN-PT) crystals. 62 A more elaborate review on piezoelectric materials can be found in the work of Anton and Sodano.…”

Section: A Configurationsmentioning

confidence: 99%

Review on the conversion of thermoacoustic power into electricity

Timmer

Blok²,

Meer

2018

The Journal of the Acoustical Society of America

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Thermoacoustic engines convert heat energy into high amplitude acoustic waves and subsequently into electric power. This article provides a review of the four main methods to convert the (thermo)acoustic power into electricity. First, loudspeakers and linear alternators are discussed in a section on electromagnetic devices. This is followed by sections on piezoelectric transducers, magnetohydrodynamic generators, and bidirectional turbines. Each segment provides a literature review of the given technology for the field of thermoacoustics, focusing on possible configurations, operating characteristics, output performance, and analytical and numerical methods to study the devices. This information is used as an input to discuss the performance and feasibility of each method, and to identify challenges that should be overcome for a more successful implementation in thermoacoustic engines. The work is concluded by a comparison of the four technologies, concentrating on the possible areas of application, the conversion efficiency, maximum electrical power output and more generally the suggested focus for future work in the field.

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“…Poly(vinylidene fluoride) exhibits various important properties, such as high mechanical strength, high temperature and chemical resistant, nuclear radiation and UV resistance, aging and abrasion resistance. Its piezoelectric and pyroelectric properties have applications in various technological devices like sensors and actuators ,. Because of its biocompatible nature, it has also found applications in various medical devices .…”

Section: Introductionmentioning

confidence: 99%

Induced Piezoelectricity in Poly(vinylidene fluoride) Hybrid as Efficient Energy Harvester

et al. 2017

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Poly(vinylidene fluoride) (PVDF) nanohybrid with organically modified two-dimensional nanoclay, prepared through solution route, has been fabricated as the energy harvester. The nanoclay induces piezoelectric phase in PVDF arising from epitaxial crystallization over the nanoclay layers. Further enhancement of piezoelectricity has been made by stretching the film at high temperature showing~80% b-phase along with some g-phase in nanohybrid. Orientation of the nanofiller along the force field creates the nanohybrid tougher and suitable for device fabrication. Mapping of piezo-domain has been constructed through piezo force microscopy indicating 100 nm dimension of the electroactive phase in stretched nanohybrid as opposed to almost zero size in pure PVDF. Structural alteration has also been confirmed through spectro-scopic and thermal measurements. Morphology also supports the formation of b-phase in presence of nanoparticle (spherulite to needle like morphology). The piezoelectric coefficient shows a significant increase after processing due to greater piezoelectric phase and the fabrication of unimorph has been made using high piezoelectric coefficient material showing higher peak to peak voltage generation of 2.5 V with much longer response time (6 ms) in stretched nanohybrid under an impulse load. Finally, the voltage and current output from the devices are measured under varying load and highest power density value of 25 mW/cm 3 is obtained for stretched nanohybrid, more than sufficient to operate a miniature self-powering device.Introduction:

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Multifunctional transducer using poly (vinylidene fluoride) active layerand highly conducting poly (3,4-ethylenedioxythiophene) electrode: Actuator and generator

Cited by 56 publications

References 18 publications

Flexible Piezoelectric ZnO–Paper Nanocomposite Strain Sensor

Flexible Piezoelectric ZnO–Paper Nanocomposite Strain Sensor

Review on the conversion of thermoacoustic power into electricity

Induced Piezoelectricity in Poly(vinylidene fluoride) Hybrid as Efficient Energy Harvester

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