P(VDF-TrFE) Film on PDMS Substrate for Energy Harvesting Applications

Kim, Soaram; Towfeeq, Itmenon; Dong, Yongchang; Gorman, Sean; Rao, Apparao M.; Koley, Goutam

doi:10.3390/app8020213

Cited by 54 publications

(32 citation statements)

References 43 publications

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“…Hence, the density of the middle layer is approximately 8.3 g/cm 3 . Accordingly, the average density of the beam (the middle layer and the two piezoelectric layers) is approximately 8 g/cm 3 . In order to optimize the power output under a predefined volume, the tip mass must be made out of a very highly dense material, much higher than the average density.…”

Section: Optimized Rectangular-shaped Piezoelectric Energy Harvestermentioning

confidence: 99%

“…There have been many vibration energy harvesters proposed in the literature, either as only a single transducer or as a transducer with an additional structure to increase the operation frequency band, as reviewed in [1,2]. A highly flexible P(VDF-TrFE) (poly(vinylidenefluoride-co-trifluoroethylen)) film-based energy harvesting device on a PDMS (polydimethylsiloxane) substrate was introduced in [3]. The fabricated device powered a set of 27 light-emitting diodes (LEDs) after several minutes of charging.…”

Section: Introductionmentioning

confidence: 99%

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A Study on Important Issues for Estimating the Effectiveness of the Proposed Piezoelectric Energy Harvesters under Volume Constraints

Aboulfotoh

Twiefel

2018

Applied Sciences

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This study presents theoretical investigations on the effectiveness criteria for piezoelectric energy harvesters (PEHs) under volume constraints. Firstly, the importance of the volume consideration is investigated. The powers of different PEHs of variant volumes are investigated under the same resonance frequency. It is found that the power output is strongly dependent on the volume of the transducer. Secondly, the impact of the mechanical damping, the electrical damping, the volume of motion, the normalized power to the volume, and the applied load resistance on the power output are investigated. The investigations are analyzed to find the optimized conditions of the applied load and the excitation frequency in order to optimize the power output under volume constraints. The proposed procedure for estimating the effectiveness is to compare the performance of the proposed PEHs to a rectangular-shaped PEH of the same volume. An optimized structure for a rectangular-shaped PEH to be used as the reference is investigated. The power output under the optimized conditions is derived. In order to estimate the effectiveness of the proposed PEHs, the average power over a band of frequencies from the proposed structure must be compared to the average power over the same band of frequencies from the optimized reference harvester.

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Section: Optimized Rectangular-shaped Piezoelectric Energy Harvestermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Study on Important Issues for Estimating the Effectiveness of the Proposed Piezoelectric Energy Harvesters under Volume Constraints

Aboulfotoh

Twiefel

2018

Applied Sciences

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“…Harvesting ambient vibration energy and converting it to electrical power is an important way for the power supply of wireless sensor networks [1][2][3]. There are different kinds of ways to harvest vibration energy, such as piezoelectricity [4][5][6], electromagnetism [7][8][9], and triboelectricity [10,11]. Each way has its advantage and disadvantage.…”

Section: Introductionmentioning

confidence: 99%

A Nonlinear Broadband Electromagnetic Vibration Energy Harvester Based on Double-Clamped Beam

Wen

et al. 2019

Energies

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The performance of vibration energy harvesters is usually restricted by their frequency bandwidth. The double-clamped beam with strong natural nonlinearity is a simple way that can effectively expand the frequency bandwidth of the vibration energy harvester. In this article, a nonlinear electromagnetic vibration energy harvester with monostable double-clamped beam was proposed. A systematic analysis was conducted and a distributed parameter analytical model was established. On this basis, the output performance was estimated by the analytical model. It was found that the nonlinearity of the double-clamped beam had little influence on the maximum output, while broadening the frequency bandwidth. In addition, the resonant frequency, the frequency bandwidth, and the maximum output all increased following the increase of excitation level. Furthermore, the resonant frequency varies with the load changes, due to the electromagnetic damping, so the maximum output power should be gained at its optimum load and frequency. To experimentally verify the established analytical model, an electromagnetic vibration energy harvester demonstrator was built. The prediction by the analytical model was confirmed by the experiment. As a result, the open-circuit voltage, the average power and the frequency bandwidth of the electromagnetic vibration energy harvester can reach up to 3.6 V, 1.78 mW, and 11 Hz, respectively, under only 1 G acceleration, which shows a prospect for the application of the electromagnetic vibration energy harvester based on a double-clamped beam.

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“…Apparently, the membrane material is one of the most important key elements in the pervaporation equipment. In the particular application of ethanol recovery, polydimethylsiloxane (PDMS) is the most promising membrane material in terms of its hydrophobicity [6,7], and its pervaporation membranes have been commercialized, such as PERVAP 4060 manufactured by Sulzer Chemtech and PolyAn produced by PolyAn GmbH [8]. Unfortunately, a drawback is that the ethanol-water selectivity for pure PDMS membranes is generally less than 10.8 [9].…”

Section: Introductionmentioning

confidence: 99%

Modified Silica Incorporating into PDMS Polymeric Membranes for Bioethanol Selection

Peng

Lan

Luo

2019

Advances in Polymer Technology

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In this work, polydimethylsiloxane (PDMS) polymeric membranes were fabricated by incorporating fumed silica nanoparticles which were functionalized with two silane coupling agents—NH2(CH2)3Si(OC2H5)3(APTS) and NH2(CH2)2NH(CH2)3Si(OC2H5)3(TSED)—for selective removal of ethanol from aqueous solutions via pervaporation. It was demonstrated that large agglomerates were not observed indicating the uniform distribution of modified silica throughout the PDMS matrices. It is noted that the ethanol diffusivity and the water contact angles were both increased remarkably, being beneficial to the preferential permeation of ethanol through the membranes. The pervaporation results showed that the addition of the two types of modified silica nanoparticles dramatically enhanced both the permeability and selectivity of hybrid membranes. Compared to APTS, silica modified by TSED at the concentration of 4 wt. % resulted in the optimum pervaporation membranes with the maximum separation factor of 12.09 and the corresponding permeation flux of approximately 234.0 g·m−2·h−1in a binary aqueous mixture at 40°C containing 10 wt. % ethanol. The observation will benefit the choice of coupling agents to improve the compatibility between hydrophilic fillers and hydrophobic polymers in preparing mixed matrix membranes.

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P(VDF-TrFE) Film on PDMS Substrate for Energy Harvesting Applications

Cited by 54 publications

References 43 publications

A Study on Important Issues for Estimating the Effectiveness of the Proposed Piezoelectric Energy Harvesters under Volume Constraints

A Study on Important Issues for Estimating the Effectiveness of the Proposed Piezoelectric Energy Harvesters under Volume Constraints

A Nonlinear Broadband Electromagnetic Vibration Energy Harvester Based on Double-Clamped Beam

Modified Silica Incorporating into PDMS Polymeric Membranes for Bioethanol Selection

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