Enhanced mechanical strength and stretchable ionic conductive hydrogel with double-network structure for wearable strain sensing and energy harvesting

Composites Science and Technology, Journal Year: 2024, Volume and Issue: 255, P. 110732 - 110732

Published: July 2, 2024

Language: Английский

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Temperature‐Mediated Controllable Adhesive Hydrogels with Remarkable Wet Adhesion Properties Based on Dynamic Interchain Interactions

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 29, 2025

Abstract With the increasing demand in fields such as wearable sensors, soft robotics, tissue engineering, and wound dressings, development of hydrogels with strong adhesion wet environments has become a critical focus research. However, most existing adhesive materials lack ability to transition rapidly reversibly between nonadhesive states, their is often limited single environment. In this study, smart interfacial hydrogel tunable properties across diverse liquid presented. By tailoring interchain interactions leveraging electrostatically induced traction hydrophilic hydrophobic chain segments, achieves reversible modulation response temperature changes while maintaining adhesion. Notably, its strength at elevated temperatures (45 °C) approximately three times greater than lower (5 °C). The exhibits an 227 kPa aqueous 213 oil‐containing environments. This innovative design strategy enables exhibit broad switchable, dynamic capabilities, unlocking significant potential for wide range applications.

Language: Английский

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Design Strategies and Emerging Applications of Conductive Hydrogels in Wearable Sensing

Gels, Journal Year: 2025, Volume and Issue: 11(4), P. 258 - 258

Published: April 1, 2025

Conductive hydrogels, integrating high conductivity, mechanical flexibility, and biocompatibility, have emerged as crucial materials driving the evolution of next-generation wearable sensors. Their unique ability to establish seamless interfaces with biological tissues enables real-time acquisition physiological signals, external stimuli, even therapeutic feedback, paving way for intelligent health monitoring personalized medical interventions. To fully harness their potential, significant efforts been dedicated tailoring conductive networks, properties, environmental stability these hydrogels through rational design systematic optimization. This review comprehensively summarizes strategies categorized into metal-based, carbon-based, polymer-based, ionic, hybrid systems. For each type, highlights structural principles, conductivity enhancement, approaches simultaneously enhance robustness long-term under complex environments. Furthermore, emerging applications in sensing systems are thoroughly discussed, covering signal monitoring, mechano-responsive platforms, closed-loop diagnostic–therapeutic Finally, this identifies key challenges offers future perspectives guide development multifunctional, intelligent, scalable hydrogel sensors, accelerating translation advanced flexible electronics smart healthcare technologies.

Language: Английский

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All-hydrogel yarn-based supercapacitor wrapped with multifunctional cotton fiber for energy storage and sensing

Nano Energy, Journal Year: 2024, Volume and Issue: 130, P. 110142 - 110142

Published: Aug. 27, 2024

Language: Английский

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Highly stretchable and sensitive sensing composite yarn based on multidimensional structure modulation for wearable E-textiles

Applied Materials Today, Journal Year: 2025, Volume and Issue: 42, P. 102591 - 102591

Published: Jan. 11, 2025

Language: Английский

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The Screening and Diagnosis Technologies Towards Pneumoconiosis: From Imaging Analysis to E-Noses

Chemosensors, Journal Year: 2025, Volume and Issue: 13(3), P. 102 - 102

Published: March 11, 2025

Pneumoconiosis, as the most widely distributed occupational disease globally, poses serious health and social hazards. Its diagnostic techniques have evolved from conventional imaging computer-assisted analysis to emerging sensor strategies covering biomarker analysis, routine breath sensing, integrated electronic nose (E-nose), etc. All of them both special advantages face shortcomings or challenges in practical application. In recent years, emergence advanced data technologies, including artificial intelligence (AI), has provided opportunities for large-scale screening pneumoconiosis. On basis a deep characteristics technologies diagnosis pneumoconiosis, this paper comprehensively systematically reviews current development these especially focusing on research progress provides forecast their future development.

Language: Английский

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Design and Application of Stimuli‐Responsive Nanocomposite Hydrogels: A Review

Macromolecular Rapid Communications, Journal Year: 2025, Volume and Issue: unknown

Published: March 3, 2025

Abstract In order to improve the disadvantages of traditional hydrogels such as low mechanical strength and lack responsiveness, different types nanoparticles or nanostructures are added into hydrogel network through in situ polymerization, self‐assembly techniques, other strategies, giving a variety special properties, stimulation sensitivity, optical electrical reversibility. With development nano materials synthesis technology, nanocomposite have shown great potential drug delivery, tissue engineering, motion detection, wastewater treatment, been extensively studied recent years. This review comprehensively elucidates state‐of‐the‐art preparation strategies underlying response mechanisms diverse stimulus‐responsive hydrogels, spanning temperature, pH, humidity, electrical, light responses. It systematically dissects their applications biomedicine, environmental remediation, flexible sensing, composite phase change materials. Moreover, it delves future prospects challenges, emphasizing need for continuous innovation unlock full emerging fields address existing limitations.

Language: Английский

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Mechanically Enhanced, Environmentally Stable, and Bioinspired Charge‐Gradient Hydrogel Membranes for Efficient Ion Gradient Power Generation and Linear Self‐Powered Sensing

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 8, 2025

Abstract The soft hydrogel power source is an interesting example of generating electricity from clean energy. However, ion‐selective membranes in the systems are often limited by low ion selectivity, high membrane resistance, insufficient mass transfer, and concentration polarization, resulting a generally output. Inspired unique structure electric ray's organ, vertically stacked artificial organ proposed, aiming to increase output current greater extent. By constructing charge gradient ultrathin membranes, transport accelerated while mitigating polarization. A single achieves outputs ≈290 mV ≈1.46 mA cm −2 with rechargeability, surpassing similar devices. Density functional theory further reveals that energy barrier charge‐gradient lower than nongradient membranes. More impressively, device can still be applied as linear self‐powered pressure sensor for monitoring human activities after completely dissipated. This study elucidates key role design gel generation system, providing new insights into development multifunctional application flexible source.

Language: Английский

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An Antifreeze Gel as Strain Sensors and Machine Learning Assisted Intelligent Motion Monitoring of Triboelectric Nanogenerators in Extreme Environments

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 27, 2025

Abstract Traditional hydrogels tend to freeze and lose performance at low temperatures, limiting their applications. Additionally, need exhibit hysteresis, excellent cycling stability, self‐adhesion ensure high‐quality signal acquisition in complex environments. To address this challenge, study designed a dual‐network gel glycerol (Gly)/H 2 O solvent system. Due the combination of chemical physical crosslinking (hydrogen bonding electrostatic interactions), resulting exhibits skin‐adaptive modulus, high anti‐freezing ability, body temperature‐induced adhesion, electrical performance, making it suitable for wearable sensors temperatures. Based on gel, single‐electrode triboelectric nanogenerator (gel‐TENG) is developed, achieving efficient conversion mechanical energy into energy. Further applied smart insole, successfully enabled real‐time visualization plantar pressure distribution skiing motion recognition. Using random forest machine learning algorithm, system accurately classified 11 basic motions, classification accuracy 97.1%. This advances flexible self‐powered systems, supporting intelligent materials research extreme

Language: Английский

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Toward next-generation wearable sensors based on MXene hydrogels

Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(38), P. 25622 - 25642

Published: Jan. 1, 2024

Here in this review, we systematically analyze the design principles of MXene hydrogels for next-generation wearable sensors. Emphasis is placed on multiple sensors based electrical/mechanical enhancement hydrogel network.

Language: Английский

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