Ultra‐stretchable, super‐tough, and highly stable ion‐doped hydrogel for advanced robotic applications and human motion sensing

InfoMat, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 13, 2025

Abstract Hydrogel‐based sensors are recognized as key players in revolutionizing robotic applications, healthcare monitoring, and the development of artificial skins. However, primary challenge hindering commercial adoption hydrogel‐based is their lack high stability, which arises from water content within hydrogel structure, leading to freezing at subzero temperatures drying issues if protective layer compromised. These factors result a significant decline benefits offered by aqueous gel electrolytes, particularly terms mechanical properties conductivity, crucial for flexible wearable electronics. Previous reports have highlighted several disadvantages associated with using cryoprotectant co‐solvents lower ion‐doped anti‐freezing sensors. In this study, design optimization photocrosslinkable ionic utilizing silk methacrylate novel natural crosslinker presented. This innovative demonstrates significantly enhanced properties, including stretchability (>1825%), tensile strength (2.49 MPa), toughness (9.85 MJ m – 3 ), resilience (4% hysteresis), compared its non‐ion‐doped counterpart. Additionally, exhibits exceptional nonfreezing behavior down −85°C, anti‐drying functional stability up 2.5 years, signal drift only 5.35% over 2450 cycles, whereas control variant, resembling commonly reported hydrogels, 149.8%. The successful application developed advanced robotics, combined pioneering demonstration combinatorial commanding single sensor, could potentially revolutionize sensor design, elevating it next level benefiting various fields. image

Language: Английский

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Bioinspired bicontinuous adhesive hydrogel for wearable strain sensor with high sensitivity and a wide working range

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: 684, P. 575 - 585

Published: Jan. 7, 2025

Language: Английский

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Recent applications and advancement of conductive hydrogels in biosensing, bioelectronics and bioengineering

Microchimica Acta, Journal Year: 2025, Volume and Issue: 192(4)

Published: March 27, 2025

Language: Английский

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3D-Printed Auxetic Ionic Hydrogels with Moisture Retention and High Sensitivity for Sustainable Wearable Sensing

Biomacromolecules, Journal Year: 2025, Volume and Issue: unknown

Published: April 11, 2025

Conductive hydrogels face challenges in maintaining environmental and mechanical stability for practical sensor applications. In this study, a long-term, stable, highly sensitive ionically conductive hydrogel was developed via synergistic dual-humectant strategy: glycerol suppressed ice nucleation through hydrogen-bond competition, while LiCl provided dynamic water sorption. This synergy enables unprecedented stability─remaining unfrozen at -60 °C retaining 70% moisture over 35 days 25 °C. The exhibits exceptional stretchability (1270% strain) adhesion (60 kPa) combined physical/covalent interactions. A three-dimensional (3D)-printed porous architecture enhances sensitivity, achieving gauge factor of 32 (3 × higher than nonporous hydrogel). particular, the auxetic-structured hydrogel─when used as wearable device─demonstrated an accurate recognition ability detecting limb subtle movements (including speech). These properties position promising candidates fabricating flexible sensors with enhanced sensitivity sustainability.

Language: Английский

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A highly elastic, moisturizing, and adhesion conductive hydrogel designed for cuffless blood pressure measurement

Talanta, Journal Year: 2024, Volume and Issue: 282, P. 127004 - 127004

Published: Oct. 10, 2024

Language: Английский

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