Ultra-Tough, highly stable and Self-Adhesive Goatskin-Based intelligent Multi-Functional organogel e-skin as Temperature, Humidity, Strain, and bioelectric four-mode sensors for health monitoring

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 485, P. 149816 - 149816

Published: Feb. 19, 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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Collagen fiber-reinforced, tough and adaptive conductive organohydrogel e-skin for multimodal sensing applications

Journal of Materials Chemistry B, Journal Year: 2024, Volume and Issue: 12(28), P. 6940 - 6958

Published: Jan. 1, 2024

Conductive hydrogels (CHs) with high sensitivity and multifunctional property are considered as excellent materials for wearable devices flexible electronics. Surface synapses internal multilayered structures key factors highly sensitive pressure sensors. Nevertheless, current CHs lack environmental adaptability, perception, instrument portability, which seriously hinders their application Here, waste collagen fibers (buffing dust of leather), polyvinyl alcohol (PVA) gelatin (Gel) were used the basic framework hydrogel, loaded a conductive material (silver nanoparticles (BD-CQDs@AgNPs)) an anti-freezing moisturizer (glycerol (Gly)), resulting in organohydrogel (BPGC-Gly). As temperature humidity sensor, it demonstrated response range (-20-60 °C) was capable rapid (2.4 s) recovery (1.6 to human breathing. strain/pressure allowed real-time monitoring movement had low-pressure (

Language: Английский

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Using chitosan nanofibers to simultaneously improve the toughness and sensing performance of chitosan-based ionic conductive hydrogels

International Journal of Biological Macromolecules, Journal Year: 2024, Volume and Issue: 260, P. 129272 - 129272

Published: Jan. 9, 2024

Language: Английский

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Tough, conductive hydrogels based on gelatin and oxidized sodium carboxymethyl cellulose as flexible sensors

Carbohydrate Polymers, Journal Year: 2024, Volume and Issue: 335, P. 121920 - 121920

Published: Feb. 9, 2024

Language: Английский

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Poly(vinyl alcohol)/polyacrylamide double‐network ionic conductive hydrogel strain sensor with high sensitivity and high elongation at break

Journal of Polymer Science, Journal Year: 2024, Volume and Issue: 62(20), P. 4599 - 4611

Published: July 19, 2024

Abstract As a soft material with biocompatibility and stimulation response, ionic conductive hydrogel‐based wearable strain sensors show great potential across wide spectrum of engineering disciplines, but their mechanical toughness is limited in practical applications. In this study, freeze‐thawing techniques were utilized to fabricate double‐network hydrogels poly(vinyl alcohol)/polyacrylamide (PVA/PAM) both covalent physical cross‐linking networks. These demonstrate excellent performance, an elongation at break 2253% tensile strength 268.2 kPa. Simultaneously, they also display high sensitivity (Gage factor, GF = 2.32 0%–200% strain), achieve rapid response time 368 ms without the addition extra fillers or ions, stable signal transmission even after multiple cycles, fast human motion detection.

Language: Английский

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Cellulose nanocrystals boosted hydrophobically associated self-healable conductive hydrogels for the application of strain sensors and electronic devices

International Journal of Biological Macromolecules, Journal Year: 2024, Volume and Issue: 260, P. 129376 - 129376

Published: Jan. 22, 2024

Language: Английский

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Tough, self-healing, adhesive double network conductive hydrogel based on gelatin-polyacrylamide covalently bridged by oxidized sodium alginate for durable wearable sensors

International Journal of Biological Macromolecules, Journal Year: 2024, Volume and Issue: 276, P. 133802 - 133802

Published: July 10, 2024

Language: Английский

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Carbon Quantum Dot-Functionalized Dermis-Derived Transparent Electronic Skin for Multimodal Human Motion Signal Monitoring and Construction of Self-Powered Triboelectric Nanogenerator

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(35), P. 46771 - 46788

Published: Aug. 21, 2024

Electronic skin (e-skin) is considered as a highly promising interface for human-computer interaction systems and wearable electronic devices. Through elaborate design assembly of various materials, it possesses multiple characteristics similar to human skin, including remarkable flexibility, stretchability, sensitivity temperature humidity, biocompatibility, efficient interfacial ion/electron transport capabilities. Here, we innovatively integrate multifunctional carbon quantum dots (CQDs), which exhibit conductivity, antibacterial properties, ultraviolet absorption, fluorescence emission, with poly(acrylic acid) glycerin (Gly) into three-dimensional network structure natural goatskin collagen fibers. top-down strategy enhanced by hydrogen bond reconstruction, successfully fabricated novel transparent e-skin (PAC-eSkin). This exhibited significant tensile properties (4.94 MPa strength 263.42% maximum breaking elongation), while also possessing Young's modulus (2.32 MPa). It noteworthy that the functionalized CQDs used was derived from discarded goat hair, addition Gly gave PAC-eSkin excellent antifreezing moisturizing properties. Due presence ultrasmall CQDs, creates channels within PAC-eSkin, could rapidly sense motion physiological signals (with gauge factor (GF) 1.88). Furthermore, had potential replace traditional electrode patches real-time monitoring electrocardiogram, electromyogram, electrooculogram signals, higher SNR (signal-to-noise ratio) 25.1 dB. Additionally, customizable size shape offer vast possibilities construction single-electrode triboelectric nanogenerator systems. We have reason believe development this based on CQDs-functionalized dermal matrices can pave new way innovations in human–computer interfaces their sensing application diverse scenarios.

Language: Английский

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Ultra-Flexible, Anti-Freezing, and Adhesive Collagen Fiber-Derived Conductive Organohydrogel E-Skin for Strain, Humidity, Temperature, and Bioelectric Sensing Applications

Chemistry of Materials, Journal Year: 2024, Volume and Issue: 36(17), P. 8141 - 8158

Published: Aug. 15, 2024

The development of biomimetic electronic skin (e-skin) has significant value in many fields, including health monitoring, soft robotics, wearable devices, and human-machine interaction. As a potential candidate for e-skin, the application conductive hydrogel is limited by factors, such as complicated fabrication process, insufficient mechanical performance, poor environmental stability, difficulty degradation. Here, we adopted top-down strategy to construct multifunctional collagen fiber-derived organohydrogel which fiber scaffold goatskin was filled with polyacrylamide network. This displayed excellent fracture stress (2.87 MPa) strain (542%). It could maintain its multifunctionality even at −20 °C after long-term storage. Additionally, this demonstrated considerable adhesion antibacterial properties, allowing it conform closely human without causing bacterial infection. e-skin sensors, assembled organohydrogel, possessed multiple stimuli-responsive modes achieve strain, humidity, temperature, bioelectric responsiveness, precise monitoring body movements, facial expressions, voice communication, physiological signals. Notably, discarded be effectively degraded under natural conditions. In brief, study gives new opinions about intelligent demonstrates pathway high-value utilization animal skin.

Language: Английский

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