Recent progress in piezoelectric thin films as self-powered devices: material and application

Frontiers in Materials, Journal Year: 2024, Volume and Issue: 11

Published: April 25, 2024

Piezoelectric materials have become a key component in sensors and actuators many industrial fields, such as energy harvesting devices, self-powered structures, biomedical nondestructive testing, owing to the novel properties including high piezoelectric coefficient electromechanical coupling factors. thin films integrated on silicon substrates are widely investigated for their performance low manufacturing costs meet requirement of sensor networks internet things (IoT). The aim this work is clarify application design structure various types, synthesis methods, device processes. Based latest literature, process fabricating film outlined, followed by concise overview techniques used microelectromechanical systems (MEMS) processing that can integrate more complex functions obtain relevant information surrounding environment. Additionally, addressing cutting-edge technology with ability produce electronic delivers incisive conclusions all aspects related features. A greater understanding piezoelectricity necessary regarding future development industry challenges.

Language: Английский

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Effective electromechanical properties and energy harvesting response in PMN-0.3PT/PDMS flexible piezoelectric composites: a combined experimental and theoretical study

Journal of Physics D Applied Physics, Journal Year: 2023, Volume and Issue: 56(36), P. 365503 - 365503

Published: April 24, 2023

Abstract In this work, lead magnesium niobate-lead titanate (PMN-0.3PT) and polydimethylsiloxane (PDMS)-based flexible piezoelectric-polymer composites are designd developd for efficient mechanical energy harvesting through a combined experimental-theoretical approach. A solid-state reaction method was employed to synthesize PMN-0.3PT piezo-ceramic, which subsequently used the fabrication of v r -PMN-0.3PT/PDMS 0–3 composite with different volume fractions, = 0.03, 0.25, 0.50 reinforcement. Uniformly distributed particles were found retain their structural symmetry across fractions well adhered PDMS matrix. The effective electromechanical properties measured compared model predictions employing finite element Eshelby–Mori–Tanaka-based micromechanical models. Considering that flexibility is critical design parameter, we propose new figure-of-merit term would consider both conversion as material. We show at 0.5, PMN-0.3PT/PDMS yields an optimum combination performance flexibility. Our study further demonstrates orientation does not significantly influence elastic dielectric low moderate PMN-PT content, attributed lower aspect ratio reinforcement particles. piezoelectric charge coefficient showed small yet change increasing content. maximum current density, 35 nA cm −2 , electric field, 90 V −1 obtained cyclic compressive stress 0.22 MPa (force, 50 N) 5 Hz, in generator, based on 0.5.

Language: Английский

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Improving the energy density and flexibility of PMN-0.3PT based piezoelectric generator by composite designing

Sensors and Actuators A Physical, Journal Year: 2024, Volume and Issue: 376, P. 115609 - 115609

Published: June 15, 2024

Language: Английский

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Effects of Samarium Doping on the Dielectric Properties of BaBi2Nb2O9 Aurivillius Ceramics

Materials, Journal Year: 2024, Volume and Issue: 17(20), P. 4952 - 4952

Published: Oct. 10, 2024

This study investigates the influence of samarium (Sm3+) doping on structural, microstructural, mechanical, and dielectric properties BaBi2Nb2O9 (BBN) ceramics. Using solid-state reaction method, samples BaBi2-xSmxNb2O9 with varying concentrations Sm (x = 0.01; 0.02; 0.04; 0.06; 0.08; 0.1) were prepared. Thermal analysis, microstructure characterization via SEM EDS, X-ray diffraction, mechanical testing, measurements conducted. The results revealed that increasing Sm3+ concentration led to formation single-phase materials a tetragonal structure at room temperature. Mechanical properties, such as Young’s modulus stiffness, improved doping, indicating stronger atomic bonding. Dielectric showed low slightly increased electrical permittivity, while higher reduced it. presence Sm3⁺ also affected relaxor evidenced by changes in freezing temperature activation energy. Overall, concludes enhances structural functional BBN ceramics, making them promising candidates for high-temperature piezoelectric applications. findings provide valuable insights into tailoring ceramic advanced technological

Language: Английский

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The parameter mapping of power ultrasonic transducer model

Ultrasonics, Journal Year: 2024, Volume and Issue: 148, P. 107533 - 107533

Published: Nov. 26, 2024

Language: Английский

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