High-Performance Mechano-Sensitive Piezoelectric Nanogenerator from Post-Treated Nylon-11,11 Textiles for Energy Harvesting and Human Motion Monitoring DOI
Zhixiao Wang,

Yubo Duan,

Chongyang Liu

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 25, 2025

Piezoelectric polymer textiles offer distinct advantages in the fabrication of wearable nanogenerators (NGs). One effective strategy to enhance output capacity NGs is modulate piezoelectric performance textiles. This paper focuses on further improving properties nylon-11,11 through post-drawing and annealing treatments. We elucidate evolution morphology ferroelectric phase submicron/nanoscale fibers during post processing as well corresponding changes performance. The drawing process primarily enhances orientation crystalline reduces fiber diameter, while more effectively promotes crystal size crystallinity. Afterward, we propose an optimal postdrawing assisted-electrostatic spinning process. Under synergistic effects these post-treatments, remanent polarization (Pr) textile increased 4.7 times that untreated textile, resulting amplified outputs. voltage, current, power density prepared PENG reached 21.5 V, 800 nA, 1.88 mW·m-2 (80 MΩ), respectively. Notably, at pressures exceeding 8 kPa, mechano-voltage current sensitivity high 266 mV/kPa 13.99 nA/kPa, respectively, which extraordinary compared other comparable nylon-based triboelectric NGs. Furthermore, investigated potential application biomechanical energy harvesting human movement monitoring. Experiments demonstrated its effectiveness powering light bulbs, tracking walking status, monitoring finger/hand/wrist gestures.

Language: Английский

Artificial piezoelectric metamaterials DOI

Ziyan Gao,

Yu Lei,

Zhanmiao Li

et al.

Progress in Materials Science, Journal Year: 2025, Volume and Issue: unknown, P. 101434 - 101434

Published: Jan. 1, 2025

Citations

1
Giant Energy Harvesting via Maxwell Displacement Current Enhancement Using Metal Sheet Interspaced Hetero‐Layer Structured Piezo‐Composite Nanofiber Device DOI
Biswajit Mahanty, Sujoy Kumar Ghosh, Prasad Gajula

et al.

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 34(6)

Published: Oct. 24, 2023

Abstract The limited performance of piezoelectric nanogenerators (PENGs) has hindered their practical applications in self‐powered electronics. To address these limitations, this study presents a new design PENG that incorporates hetero‐layer structured piezo‐composite nanofibers with interspaced metal sheets. structure consists alternating layers ferroelectric barium titanate (BT) nanoparticles interfaced poly(vinylidene fluoride‐co‐trifluoroethylene) (P(VDF‐TrFE)) composite (P(VDF‐TrFE)/BT), and conductive graphite nano‐sheets (GNS)‐embedded P(VDF‐TrFE) (P(VDF‐TrFE)/GNS) mats. inclusion sheets the device configuration enhances stress concentration effect, thereby effectively distributing applied mechanical vibrations. Simultaneously, P(VDF‐TrFE)/BT improve coefficient (187.86 pC N −1 ), while P(VDF‐TrFE)/GNS reduce internal impedance device. These combined enhancements result an increased Maxwell displacement current power output. Consequently, exhibits impressive open circuit voltage ( V oc ) output 350 V, short I sc 6 µA, 3.62 W m −2 . Moreover, developed demonstrates extraordinary energy harvesting under harsh vibrations caused by human musculoskeletal movements, as well subtle from heart pulses, emotional changes, speech recognition. Additionally, shows its potential use wearable wireless e‐health systems.

Language: Английский

Citations

19
Inducing Polar Phase in Poly(Vinylidene Fluoride) with a Molecular Ferroelectric Copper(II) Complex for Piezoelectric Energy Harvesting DOI

Rajashi Haldar,

Utsa Sarkar,

Ajay Kumar

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(46)

Published: June 11, 2024

Abstract Piezoelectric nanogenerators (PENGs), the current pathway to sustainable energy harvesting, are mostly comprised of bulk oxide ceramics which toxic, rigid, and costly synthesize. A suitable alternative them is flexible polar polymers like polyvinylidene fluoride (PVDF), but stabilizing its phase also a daunting task. all these aforementioned issues by employing biocompatible have been solved, above‐room‐temperature ( T c > 390 K) ferroelectric discrete molecular complex [Cu(L‐His)(bpy)]ClO 4 .1.5H 2 O Cu‐FE ) not only for piezoelectric harvesting due large values co‐efficient (d 33 = 17 pm V −1 capable imparting β ‐phase in PVDF via hydrogen bonding interactions under mild condition (60 °C). Among PENG devices prepared with composite films various weight % (w/V) compositions , highest output voltage 8 (peak peak) has obtained, power density µW cm −2 an 3 µA from 1 wt.% film. The fabricated device exhibits swift capacitor charging 40 s, acts as excellent pressure sensor, exceptional sensitivity low pressures (7 kPa), giving 0.4 V.

Language: Английский

Citations

7
High-κ elastomer with dispersed ferroelectric nematic liquid crystal microdroplets DOI
Ye Fan, Chen Yang, Xinxin Zhang

et al.

Journal of Materials Chemistry C, Journal Year: 2024, Volume and Issue: 12(8), P. 2738 - 2744

Published: Jan. 1, 2024

An emergent liquid ferroelectric material is dispersed into polydimethylsiloxane as microdroplets, realizing a stretchable and high-κ elastomer.

Language: Английский

Citations

6
Polar Organic Charge-Transfer Complex of the Asymmetrical Component for Flexible Piezoelectric Energy Harvesting and Self-Powered Wearable Sensors DOI

Shuang Ma,

Zhiqi Liu,

Chenchen Gao

et al.

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(2), P. 2583 - 2592

Published: Jan. 3, 2024

Organic piezomaterials have attracted much attention because of their easy processing, lightweight, and mechanic flexibility properties. Developing new smart organic is highly required for new-generation electronic applications. Here, we found a novel piezomaterial charge-transfer complex (CTC) consisting dibenzcarbazole analogue (DBCz) tetracyanoquinodimethane (TCNQ) in the molecular-level heterojunction stacking mode. The DBCz–TCNQ exhibited ferroelectric properties (the saturated polarization ∼1.23 μC/cm2) at room temperature with low coercive field. noncentrosymmetric alignment (Pc space group) led to spontaneous this architecture thus was origin piezoelectric behavior. Lateral nanogenerators (PENGs) based on thermal evaporated CTC thin-film significant energy conversion behavior under mechanical agitation calculated coefficient (d31) ∼33 pC/N. Furthermore, such binary constructed single-electrode PENG could show steady-state sensing performance external stimuli as flexible wearable device precisely detected physiological signals (e.g., finger bending, blink movement, carotid artery, etc.) self-powered supply. This work provides that polar CTCs can act efficient harvesting, conversion, devices supply, enabling great potential healthcare, motion detection, human–machine interfaces, etc.

Language: Английский

Citations

5
Enhancing the Alpha-To-Gamma Phase Transition of Poly(vinylidene fluoride) via Dehydrofluorination Modification DOI

Muhua Yuan,

Haijun Wang, Yuxin Wang

et al.

Crystal Growth & Design, Journal Year: 2024, Volume and Issue: 24(3), P. 1485 - 1494

Published: Jan. 26, 2024

Due to the high activating energy, it is very difficult initiate α-to-γ phase transition of poly(vinylidene fluoride) (PVDF), resulting in an extremely slow rate. Here, introducing a small number double bonds into PVDF molecular chains through dehydrofluorination demonstrated markedly decrease energy and enhance efficiency. It found that introduced during reaction accelerate transition, which reflected by shortened induction period increased The modified with occurs mostly from nuclei α-spherulites rather than scarce boundaries initiated γ-spherulites as unmodified PVDF. Comparative analysis reveals storage performance γ-PVDF films prepared surpasses α-PVDF ones. Compared α-PVDF, density exhibits remarkable enhancement 181%, while efficiency experiences notable improvement 124%. Consequently, modification strategy for introduced, enabling efficient production enhanced properties positioning ideal material driving technological advancements electronic devices, electric vehicles, renewable sectors.

Language: Английский

Citations

5
Recent progress of organic artificial synapses in biomimetic sensory neural systems DOI
Fang Lan,

Cuizhu Mao,

Haiting Wang

et al.

Journal of Materials Chemistry C, Journal Year: 2024, Volume and Issue: 12(24), P. 8586 - 8610

Published: Jan. 1, 2024

This review summarizes the recent advancements in organic artificial synapses and their applications simulating somatosensory, visual, auditory, gustatory, olfactory multimodal sensory neural systems.

Language: Английский

Citations

5
Ingenious Structure Engineering to Enhance Piezoelectricity in Poly(vinylidene fluoride) for Biomedical Applications DOI
Jiwei Cui,

Lijun Du,

Zhiheng Meng

et al.

Biomacromolecules, Journal Year: 2024, Volume and Issue: 25(9), P. 5541 - 5591

Published: Aug. 12, 2024

The future development of wearable/implantable sensing and medical devices relies on substrates with excellent flexibility, stability, biocompatibility, self-powered capabilities. Enhancing the energy efficiency convenience is crucial, converting external mechanical into electrical a promising strategy for long-term advancement. Poly(vinylidene fluoride) (PVDF), known its piezoelectricity, an outstanding representative electroactive polymer. Ingeniously designed PVDF-based polymers have been fabricated as piezoelectric various applications. Notably, performance platforms determined by their structural characteristics at different scales. This Review highlights how researchers can strategically engineer structures microscopic, mesoscopic, macroscopic We discuss advanced research diverse designs in biomedical sensing, disease diagnosis, treatment. Ultimately, we try to give perspectives trends biomedicine, providing valuable insights further research.

Language: Английский

Citations

5
An elastic piezoelectric nanomembrane with double noise reduction for high-quality bandpass acoustics DOI Creative Commons
Jialin Zhang, Yanjun Liu, Peiyi Wu

et al.

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: Oct. 16, 2024

Polymer piezoelectrics with high electromechanical energy conversion (HEEC) are very promising for flexible acoustoelectric devices. However, reducing thickness and improving ordered polarization ferroelectricity while maintaining mechanical strength pose enormous fabrication challenges polymer piezoelectric membranes-additionally, noise management in the remains an open issue. Here, we present a hydro-levitation superspreading approach fabricating nanomembranes crystalline phases sub-nanostructures on water surface. The elastic nanomembrane (EPN) is only 335 nanometers thick consists of conductance-stable layer sandwiched between two damping layers. Such all-in-one EPN can reduce background low autocorrelation environment, suppress spurious caused by poor circuit contact, achieve bandpass filtering acoustic signals at human voice frequencies. This holds promise repairing auditory system patients tympanic membrane perforation wide range other fields.

Language: Английский

Citations

4
MXene-Reinforced Water Insensitive Self-Healing Piezoelectric Nanogenerator for Ambient and Aquatic Mechano-Pressure Sensing DOI

Ting‐Wang Sun,

Manikandan Venkatesan, Yung‐Chi Hsu

et al.

Nano Energy, Journal Year: 2024, Volume and Issue: 133, P. 110416 - 110416

Published: Oct. 29, 2024

Language: Английский

Citations

4