How to Make Elastomers Piezoelectric?

Advanced Materials Technologies, Journal Year: 2023, Volume and Issue: 8(15)

Published: June 17, 2023

Abstract Piezoelectrics play a significant role in modern electronics and electric devices. Thermal or mechanical stress on such materials induces change polarization generating an response, which is the sole effect of why they are so interesting. However, most piezoelectrics rigid brittle ceramics thus difficult to integrate into wearable that comply with human skin organs. To facilitate their incorporation stretchable, so‐called next generation electronic devices, researchers have focused developing piezoelectric improved properties. Significant advances achieved regarding flexibility. marrying piezoelectricity elasticity proved challenging, as elastomers, amorphous flexible network structure, cannot keep permanently. Herein, recent developments field elastomers reviewed, potential future applications sensors energy harvesting discussed.

Language: Английский

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3D-Printed Piezoelectret Based on Foamed Polylactic Acid for Energy-Harvesting and Sensing Applications

Nanomaterials, Journal Year: 2023, Volume and Issue: 13(22), P. 2953 - 2953

Published: Nov. 15, 2023

Poly(lactic) acid (PLA) is a bio-compatible polymer widely used in additive manufacturing, and the form of cellular foam it shows excellent mechanical piezoelectric properties. This type structure can be easily 3D-printed by Fusion Deposition Modelling (FDM) with commercially available composite filaments. In this work, we present electrical investigations on low-cost eco-friendly foamed PLA. The microstructure foaming degree were tuned varying extrusion temperature flowrate. maximum surface potential charge stability disk samples found correspondence between 230 240 °C flowrate 53–44% when charging heated bed at 85 °C. cells’ morphology correlated properties analyzed measured d33 coefficient was to 212 pC/N. These findings show importance printing parameters thermal treatment during process order obtain highest storage, material flexibility. results suggest that PLA promising sustainable for sensing energy-harvesting applications.

Language: Английский

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Hybrid Organic/Inorganic Piezoelectric Device for Energy Harvesting and Sensing Applications

Coatings, Journal Year: 2023, Volume and Issue: 13(2), P. 464 - 464

Published: Feb. 18, 2023

Novel hybrid organic/inorganic flexible devices with composite films, consisting of Ba0.5Sr0.5TiO3 (BST), were prepared by inserting BST nanocoating under spray deposited Poly-vinylidene fluoride-based co-polymer PVDF-TrFE. The study validated that the crystalline structure remains unaffected presence polymer. 3D atomic force microscopic image sample confirmed improved surface roughness and contact conditions after spraying As a result, exhibited higher polarization current reduced impedance parasitic inductance. enhancement stability piezoelectric parameters at multiple bending was observed for in comparison single film transducer. drop root mean square (RMS) voltage 70% approximately 340,000 numbers against less than 3% BST+PVDF-TrFE device. Due to effect separate layers summed net charges, device competitive oxide despite lower coefficient proposed solution paves path toward lead-free, wearable energy harvesting low-power consuming electronic devices.

Language: Английский

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Built-In Piezoelectric Nanogenerators Promote Sustainable and Flexible Supercapacitors: A Review

Materials, Journal Year: 2023, Volume and Issue: 16(21), P. 6916 - 6916

Published: Oct. 27, 2023

Energy storage devices such as supercapacitors (SCs), if equipped with built-in energy harvesters piezoelectric nanogenerators, will continuously power wearable electronics and become important enablers of the future Internet Things. As gadgets flexible, items that can be fabricated greater compliance crucial, designing them sustainable flexible strategies for use important. In this review, designed mainly are discussed in terms their operational principles, device configuration, material selection, a focus on application electronics. While structural design materials selection highlighted, current shortcomings challenges emerging field nanogenerators integrated into also to make more comfortable sustainable. We hope work may provide references, directions, new perspectives development electrochemical sources charge themselves by harvesting mechanical from ambient environment.

Language: Английский

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The New Techniques for Piezoelectric Energy Harvesting: Design, Optimization, Applications, and Analysis

Energies, Journal Year: 2022, Volume and Issue: 15(18), P. 6684 - 6684

Published: Sept. 13, 2022

The importance of energy harvesting is considered when the neglected ambient that graduated from different systems and dissipates around us, such as electromagnetic waves, heat, vibration, etc [...]

Language: Английский

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Promoting Piezoelectricity in Amino Acids by Fluorination

Advanced Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 17, 2024

Abstract Bioinspired piezoelectric amino acids and peptides are attracting attention due to their designable sequences, versatile structures, low cost, biodegradability. However, it remains a challenge design with high piezoelectricity. Herein, acid by simple fluorination in its side chain is presented. The three phenylalanine derivatives designed: Cbz‐Phe, Cbz‐Phe(4F), Cbz‐pentafluoro‐Phe. effect of on self‐assembly piezoelectricity investigated. Cbz‐Phe(4F) can self‐assemble into crystals C2 space group, while Cbz‐Phe Cbz‐pentafluoro‐Phe form aggregated self‐assemblies. Moreover, exhibit remarkably higher coefficient () ≈17.9 pm V −1 than When fabricated as nanogenerator, generates an open‐circuit voltage ≈2.4 V. Importantly, serve flexible sensor for the classification various nuts quality sorting, which includes those small individual pumpkin seeds sensitivity accuracy sorting checks. mounted onto soft grippers, performs tactile self‐sensing functions. This work provides promising approach designing fluorination, offering exciting prospects advancements bioinspired materials application smart agriculture robotics.

Language: Английский

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Revisiting lead magnesium niobate-lead titanate piezoceramics for low-frequency mechanical vibration-based energy harvesting

Journal of Alloys and Compounds, Journal Year: 2023, Volume and Issue: 945, P. 169298 - 169298

Published: Feb. 14, 2023

Language: Английский

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Flexible Composites for Piezocatalysis

ChemPlusChem, Journal Year: 2023, Volume and Issue: 88(11)

Published: Sept. 5, 2023

Despite piezoelectric materials have a long history of application, catalysis has continued to be hot topic in recent years. Flexible just emerged years due their versatility and designability. In this paper, we review the advances flexible for catalysis, discuss fundamentals catalytic properties composite materials, detail typical structures these materials. We pay special attention types filler composites, role interaction between particles substrate. Notable examples organic pollutants degradation, enhanced piezo-photocatalysis antibacterial applications are also presented. Finally, present key issues future prospects development catalysts.

Language: Английский

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Piezoelectric and Triboelectric Nanogenerators for Enhanced Wound Healing

Biomimetics, Journal Year: 2023, Volume and Issue: 8(7), P. 517 - 517

Published: Nov. 1, 2023

Wound healing is a highly orchestrated biological process characterized by sequential phases involving inflammation, proliferation, and tissue remodeling, the role of endogenous electrical signals in regulating these has been highlighted. Recently, external electrostimulation shown to enhance processes promoting cell migration, extracellular matrix formation, growth factor release while suppressing pro-inflammatory reducing risk infection. Among innovative approaches, piezoelectric triboelectric nanogenerators have emerged as next generation flexible wireless electronics designed for energy harvesting efficiently converting mechanical into power. In this review, we discuss recent advances emerging field harnessing stimulation accelerate wound healing. We elucidate fundamental mechanisms relevant bioelectric physiology, well principles underlying each nanogenerator technology, review their preclinical applications. addition, address prominent challenges outline future prospects era wound-healing devices.

Language: Английский

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AlN Nanowire-Based Vertically Integrated Piezoelectric Nanogenerators

ACS Applied Nano Materials, Journal Year: 2024, Volume and Issue: 7(13), P. 15798 - 15807

Published: June 27, 2024

In this study, a detailed analysis of the direct piezo-response AlN nanowire-based vertically integrated nanogenerators (VINGs) is undertaken as function mechanical excitation frequency. We show that piezo-charge, piezo-voltage, and impedance measured at same position devices can be directly correlated through an equivalent circuit model in whole frequency range investigation. Our presented results are utilized to determine performance figures merit (FoM) VINGs, namely, piezoelectric voltage constant (g) for sensing product d · g energy harvesting, where charge constant. By comparison these metrics with those freestanding single-crystal GaN quartz substrates well sputtered thin films, we suggest nanowires outperform their rigid counterparts terms generation. This work provides experimental guidelines understanding piezo-characteristics VINGs facilitates quantitative between nanostructured fabricated by using different materials or architectures.

Language: Английский

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