A Haptic Glove with Flexible Piezoresistive Sensors Made by Graphene and Polyurethane Sponge for Object Recognition Based on Machine Learning Methods

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

Published: April 2, 2025

Language: Английский

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Intrinsically Conductive, Highly Compressible, Porous Hydrogel with Exceptional Sensitivity at Low Pressure

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

Published: April 17, 2025

Abstract Conductive hydrogels have emerged as a promising material in the field of flexible sensing, holding great potential for advanced wearable devices and medical diagnostics, because their unique conductivity, mechanical deformability, tissue‐like softness. However simultaneously achieving intrinsic excellent compressibility resilience remains significant challenge. Herein, novel macroporous, highly compressive, resilient, intrinsically conductive hydrogel (MPGEL) based on newly developed easy, eco‐friendly, zero‐waste strategy is reported. The MPGEL prepared using nitrogen inert gas foaming agent, polymerizable Pluronic F127 surfactant crosslinker, ionic lithium acrylate (LiAA) monomer. resulting exhibits with low compressive modulus (3.75 kPa), yielding an exceptional sensitivity 31.67 kPa −1 at pressure. Therefore, not only can monitor various human movements, but also effectively detect cardiac motion, even precisely distinguish between central peripheral arterial blood pressure waveforms. This highlights immense future diagnostic technologies health‐monitoring devices.

Language: Английский

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Crystalline‐Constrain Enables Preparation of Hierarchical Porous Hydrogels with High Porosity and Good Mechanics

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 13, 2024

Abstract Porous hydrogels with high porosity can achieve matter diffusion and transport efficiency. Achieving both ultrahigh excellent mechanical properties in porous remains a long‐standing challenge, considerably hindering their use load‐bearing elastic scaffolds such as artificial articular cartilages meniscus replacements. Herein, novel crystalline‐constrained multi‐solvents template preparation method is proposed for synthesizing highly hierarchical polyvinyl alcohol (P‐exogel) properties. The enhanced characteristics of the P‐exogel are attributed to crystallinity‐induced network anti‐swelling effect pore walls during dynamic removal. exhibits interconnected structure (81.69%), resulting ultrafast surface wetting water (in less than 10 ms). Moreover, good tensile breaking strength (2.47 ± 0.53 MPa) elongation more 400%, toughness (5.61 1.65 MJ m −3 ), recovery performance. pre‐crack testing results further confirm fracture resistance (18.73 2.52 KJ −2 ) P‐exogel, which almost surpasses those all reported commercial hydrogels. unique microstructure ensures its efficient reversible liquid absorption release ability loading–unloading processes, confirming great application potential scaffolds.

Language: Английский

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Polyphenol‐Mediated Multifunctional Human–Machine Interface Hydrogel Electrodes in Bioelectronics

Small Science, Journal Year: 2024, Volume and Issue: 5(1)

Published: Nov. 21, 2024

Human-machine interface (HMI) electrodes enable interactions between humans and bioelectronic devices by facilitating electrical stimulation recording neural activity. However, reconciling the soft, hydrated nature of living human tissues with rigid, dry properties synthetic electronic systems is inherently challenging. Overcoming these significant differences, which critical for developing compatible, effective, stable interfaces, has become a key research area in materials science technology. Recently, hydrogels have gained prominence use HMI because are similar to can be tuned through incorporation nanofillers. This review examines functional requirements highlights recent progress development polyphenol-mediated multifunctional hydrogel-based bioelectronics. Furthermore, aspects such as mussel-inspired adhesion, underlying mechanisms, tissue-matching mechanical properties, electrochemical performance, biocompatibility, biofouling resistance, stability under physiological conditions, anti-inflammatory, antioxidant discussed. Finally, applications bioelectronics further perspectives outlined. Advances hydrogel expected facilitate unprecedented integration biological devices, potentially revolutionizing various biomedical fields enhancing capabilities performance devices.

Language: Английский

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Conductive Hydrogel with Ta₄C₃T_X MXene to Detect Human Movement

ACS Applied Nano Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 25, 2024

Language: Английский

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