Simulation and analysis of P(VDF-TrFE) cantilever-beams for low frequency applications

Rashmi, K.R.; Rao, Arjun Sunil; Satyanarayan,; Shastrimath, V. Veena Devi; Jayarama, A.; Pinto, R.

doi:10.1016/j.matpr.2020.02.698

Cited by 3 publications

(3 citation statements)

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“…In order to well illustrate the complicated structures and multifunctionality of VDF-based copolymers and even the molecular mechanism of the versatile devices fabricated by these polymers, computational simulations have also been extensively carried out. ,− First, the atomic-scale quantum chemistry (QM) calculations and molecular dynamics (MD) simulations were employed to analyze molecular conformation of polymer chains under an external electric field or not and further understand polarization switching or phase transition of polymer bulks. − Second, the more time-consuming first-principles calculations were employed to reveal phase behaviors of different polymer crystalline phases and even the MPB information within complex domain structures . Finally, the finite element method was used to supply structural design information of piezoelectric P(VDF-TrFE) cantilever beams for low-frequency applications …”

Section: Introductionmentioning

confidence: 99%

“…3 Finally, the finite element method was used to supply structural design information of piezoelectric P(VDF-TrFE) cantilever beams for low-frequency applications. 27 Learning from all of the previous computational investigations, there is no multiscale modeling on ferroelectricpolymer-based artificial visual systems, comprehensively illustrating their working principle. Therefore, we combined the QC calculations, first-principles calculations, Monte Carlo (MC) simulations, and the Benav model 28 here to develop an integrated multiscale simulation approach to establish a whole working picture of P(VDF-TrFE)-based artificial retina from microscopic molecule behaviors to macroscopic device performance, which would be a prototype to trigger following investigations on various energy-harvesting neuromorphic devices.…”

Section: ■ Introductionmentioning

confidence: 99%

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Multiscale Simulations on Synaptic Signal Transduction of Energy-Harvesting P(VDF-TrFE)-Based Artificial Retina

Guan

Chen

2023

J. Phys. Chem. B

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Ferroelectric polymers have drawn a lot of research concerns recently due to their lightness, mechanical flexibility, conformability, and facile processability. Remarkably, these polymers can be used to fabricate biomimetic devices, such as artificial retina or electronic skin, to realize artificial intelligence. The artificial visual system behaves as a photoreceptor, converting incoming light into electric signals. The most widely studied ferroelectric polymer, poly(vinylidene fluoride-trifluoroethylene) [P(VDF-TrFE)], can be used as the building block in this visual system to implement synaptic signal generation. There is a void in computational investigations on the complicated working picture of P(VDF-TrFE)-based artificial retina from a microscopic mechanism to a macroscopic mechanism. Therefore, a multiscale simulation method combining quantum chemistry calculations, first-principles calculations, Monte Carlo simulations, and the Benav model was established to illustrate the whole working principle, involving synaptic signal transduction and consequent communication with neuron cells, of the P(VDF-TrFE)-based artificial retina. This newly developed multiscale method not only can be further applied to other energy-harvesting systems involving synaptic signals but also would be helpful to build microscopic/macroscopic pictures within these energy-harvesting devices.

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Section: Introductionmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

Multiscale Simulations on Synaptic Signal Transduction of Energy-Harvesting P(VDF-TrFE)-Based Artificial Retina

Guan

Chen

2023

J. Phys. Chem. B

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“…Three design types are tested, and the frequency of 10 μm × 5 μm × 3 μm type is 42.68 Hz. The research shows that P(VDF-TrFE) is useful for very low frequency PENG design [ 36 ].…”

Section: Introductionmentioning

confidence: 99%

Improved Design via Simulation of Micro-Modified PVDF and Its Copolymer Energy Harvester with High Electrical Outputs

Liu

Huang

Liu

2020

Sensors

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In this work, micro-modified polyvinylidene fluoride (PVDF) and its copolymer poly(vinylidene-trifluoroethylene) (P(VDF-TrFE)) with salient enhancement in current output are demonstrated. The influence of surface-modified structure characteristics on electrical properties of energy harvester is systematically analyzed based on the finite element method. For vertical load mode, eight structures consisting of banded and disjunctive groups are compared to evaluate the voltage performance. The cylinder is proved to be the best structure of 3.25 V, compared to the pristine structure of 0.99 V (P(VDF-TrFE)). The relevant experiment has been done to verify the simulation. The relationship between radius, height, force and distance to the voltage output of the cylinder allocation is discussed. For periodical changing load mode, the cylinder modified structure shows a conspicuous enhancement in current output. The suitable resistance, current–voltage and frequency, the relationship between loading speed and current, and the ductility of current loading are studied. For 30 kHz, the peak current is 20 times larger than the flat plate structure. Tip shape mode and fusiform shape mode are found, which show the different shapes of the peak current-frequency curves. Four electrical loading circuit properties are also discussed: the suitable resistance of the system, synchronism of current and voltage, time delay nature of energy harvester and current-loading relationship. The simulation results can provide some theoretical basis for designing the energy harvester and piezoelectric nanogenerator (PENG).

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Simulation & analysis of PZT/ P (VDF-TrFE) cantilever beams for health monitoring of building and structures

Lobo

Manjunatha

Jayarama

et al. 2022

Materials Today: Proceedings

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Simulation and analysis of P(VDF-TrFE) cantilever-beams for low frequency applications

Cited by 3 publications

References 20 publications

Multiscale Simulations on Synaptic Signal Transduction of Energy-Harvesting P(VDF-TrFE)-Based Artificial Retina

Multiscale Simulations on Synaptic Signal Transduction of Energy-Harvesting P(VDF-TrFE)-Based Artificial Retina

Improved Design via Simulation of Micro-Modified PVDF and Its Copolymer Energy Harvester with High Electrical Outputs

Simulation & analysis of PZT/ P (VDF-TrFE) cantilever beams for health monitoring of building and structures

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