Robust conductive skin hydrogel e-skin constructed by top–down strategy for motion-monitoring

Deleted Journal, Journal Year: 2023, Volume and Issue: 5(1)

Published: May 31, 2023

Abstract The construction of biomass-based conductive hydrogel e-skins with high mechanical properties is the research hotspot and difficulty in field biomass materials. Traditional collagen-based hydrogels, constructed by typical “bottom–up” strategy, normally have incompatible problem between property collagen content, extraction often necessary. To solve these problems, inspired content animal skins, this work proposed a “top–down” which was unnecessary skin skeleton (SCS) 3D network structure woven natural fibers goatskin preserved used as basic framework hydrogel. Following four-step route, namely, pretreatment → soaking AgNPs (silver nanoparticles) solution mixed containing HEA (2-hydroxyethyl methacrylate) AlCl 3 polymerization, successfully achieved fabrication new skin-based e-skin (tensile strength 2.97 MPa, toughness 6.23 MJ·m −3 breaking elongation 428%) using raw material. developed (called PH@Ag) possessed unique encapsulated PHEA, exhibited satisfactory adhesion, considerable antibacterial property, cytocompatibility, conductivity (3.06 S·m −1 ) sensing sensitivity (the maximum gauge factor 5.51). PH@Ag could serve strain sensors to accurately monitor recognize all kinds human motions such swallowing, frowning, walking, so on, thus anticipated application prospect many fields including flexible wearable electronic devices, health motion monitoring. Graphical abstract

Language: Английский

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Conductive nanocomposite hydrogels for flexible wearable sensors

Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(16), P. 9371 - 9399

Published: Jan. 1, 2024

We present a comprehensive review of the recent research advances in field sensors based on hydrogels with nanofillers. The characteristics and design strategies nanofillers are highlighted multiple properties conductive nanocomposite described.

Language: Английский

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Ultrastretchable High-Conductivity MXene-Based Organohydrogels for Human Health Monitoring and Machine-Learning-Assisted Recognition

ACS Applied Materials & Interfaces, Journal Year: 2023, Volume and Issue: 15(15), P. 19435 - 19446

Published: April 10, 2023

Conductive hydrogels as promising candidates of wearable electronics have attracted considerable interest in health monitoring, multifunctional electronic skins, and human-machine interfaces. However, to simultaneously achieve excellent electrical properties, superior stretchability, a low detection threshold conductive remains an extreme challenge. Herein, ultrastretchable high-conductivity MXene-based organohydrogel (M-OH) is developed for human monitoring machine-learning-assisted object recognition, which fabricated based on Ti3C2Tx MXene/lithium salt (LS)/poly(acrylamide) (PAM)/poly(vinyl alcohol) (PVA) hydrogel through facile immersion strategy glycerol/water binary solvent. The M-OH demonstrates remarkable stretchability (2000%) high conductivity (4.5 S/m) due the strong interaction between MXene dual-network PVA/PAM matrix incorporation LS, respectively. Meanwhile, sensor enables with sensitivity limit (12 Pa). Furthermore, pressure mapping image recognition technology, 8 × pixelated M-OH-based sensing array can accurately identify different objects accuracy 97.54% under assistance deep learning neural network (DNN). This work comprehensive performances high-conductive would further explore extensive potential application prospects personal healthcare, interfaces, artificial intelligence.

Language: Английский

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Ultra-stretchable and anti-freezing ionic conductive hydrogels as high performance strain sensors and flexible triboelectric nanogenerator in extreme environments

Nano Energy, Journal Year: 2024, Volume and Issue: 126, P. 109633 - 109633

Published: April 21, 2024

Language: Английский

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Polyaniline/ZnO heterostructure-based ammonia sensor self-powered by electrospinning of PTFE-PVDF/MXene piezo-tribo hybrid nanogenerator

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 496, P. 154226 - 154226

Published: July 22, 2024

Language: Английский

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Coordination/salting-out synergistic construction of multifunctional PVA/chitosan conductive organohydrogel as strain and bioelectrical sensors

Polymer, Journal Year: 2024, Volume and Issue: 298, P. 126889 - 126889

Published: March 9, 2024

Language: Английский

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Triboelectric nanogenerators based on hydrated lithium ions incorporated double-network hydrogels for biomechanical sensing and energy harvesting at low temperature

Nano Energy, Journal Year: 2024, Volume and Issue: 125, P. 109521 - 109521

Published: March 20, 2024

Language: Английский

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Tailoring nanostructured MXene to adjust its dispersibility in conductive hydrogel for self-powered sensors

Composites Part B Engineering, Journal Year: 2024, Volume and Issue: 272, P. 111191 - 111191

Published: Jan. 3, 2024

Language: Английский

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Gel-Based Triboelectric Nanogenerators for Flexible Sensing: Principles, Properties, and Applications

Nano-Micro Letters, Journal Year: 2024, Volume and Issue: 16(1)

Published: May 31, 2024

Abstract The rapid development of the Internet Things and artificial intelligence technologies has increased need for wearable, portable, self-powered flexible sensing devices. Triboelectric nanogenerators (TENGs) based on gel materials (with excellent conductivity, mechanical tunability, environmental adaptability, biocompatibility) are considered an advanced approach developing a new generation sensors. This review comprehensively summarizes recent advances in gel-based TENGs sensors, covering their principles, properties, applications. Based requirements working mechanism characteristic advantages gels introduced. Design strategies performance optimization hydrogel-, organogel-, aerogel-based systematically summarized. In addition, applications human motion sensing, tactile health monitoring, human–machine interaction, other related fields Finally, challenges discussed, feasible proposed to guide future research.

Language: Английский

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Antifreeze protein-based ultrastretchable and highly sensitive hydrogel for human-machine interaction

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 488, P. 150775 - 150775

Published: March 28, 2024

Language: Английский

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