Humic acid-based anti-freezing and self-healing hydrogel flexible sensors with functional cellulose nanocrystals

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 159854 - 159854

Опубликована: Янв. 1, 2025

Язык: Английский

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A Novel 3D-Printed Self-Healing, Touchless, and Tactile Multifunctional Flexible Sensor Inspired by Cutaneous Sensory Organs

Composites Communications, Год журнала: 2025, Номер unknown, С. 102287 - 102287

Опубликована: Янв. 1, 2025

Язык: Английский

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Self-healable and self-adhesive hydrogel based gas sensor using carbon quantum dots embedded ZnMn2O4 platelets for ppb level sensing of toluene at room temperature

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 160601 - 160601

Опубликована: Фев. 1, 2025

Язык: Английский

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Nanocomposite Multi-Cross-Linked Hydrogels with High Strength, High Stretchability and High Conductivity for Multifunctional Wearable Sensors

ACS Applied Polymer Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 2, 2025

Conductive hydrogels have gained significant attention in advanced fields like wearable devices and soft robotics. However, the concurrent fabrication of sensors based on with both optimal mechanical properties high conductivity remains a challenge due to inherent brittleness conventional absence conductive pathways within them. Addressing this challenge, study successfully developed nanocomposite multicross-linked hydrogel strength, stretchability conductivity. The structure comprises chemically cross-linked polyacrylamide (PAM) network entangled gelatin chains induced by Hofmeister effect. Multiple hydrogen bonds between gelatin, PAM, water molecules, carboxylated multiwalled carbon nanotubes (c-MWCNTs), chitosan (CS) enhance hydrogel's crosslink density stability. exhibits remarkable performance, tensile strength 0.83 MPa, over 1558%, toughness 5.04 MJ/m3, alongside excellent fatigue resistance self-healing capabilities. also shows (5.09 S/m), sensitivity (GF = 1.91), durability (over 100 cycles), enabled formed c-MWCNTs inorganic salt electrolytes. prepared strain show wide range applicability reliability field human motion monitoring, where large movements joint bending (including elbow, wrist knee) small such as smiling swallowing can be accurately monitored. Moreover, it transmit information analyzing electrical signal changes, suggesting innovative potential for communication applications. Thus, holds great promise health monitoring remote communication.

Язык: Английский

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Plant Template-Based Ultra-high Conductivity Multifunctional Silver Nanocomposite Transparent Hydrogel for Flexible Wearable Sensors

ACS Applied Polymer Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 9, 2025

Conductive hydrogels, widely recognized as flexible sensor materials for health monitoring, pose a research challenge in selecting suitable frameworks and designing multifunctional composites that balance conductivity, transparency, self-healing, mechanical properties. In this work, simple efficient plant-template method (corn husk) is used to generate textured hydrogel (PPA) with PEI PVA the transparent framework, without additional cross-linking agents. The resulting exhibits high conductivity (8.56 S/m), excellent transparency (94% @ 550 nm nontextured variant), remarkable stretchability (627.1%). Additionally, PPA self-healing capabilities, achieving maximum efficiency of 94.68%. To enhance AgNWs are applied surface using rod coating method, forming PPA@RCA 12.39 S/m. This improvement attributed interactions between silver-based nanomaterials (AgNWs, AgNPs), Li+, PEI/PVA framework PPA@RCA. wearable strain based on features gauge factor 3.35 instantaneous response characteristics (response time 195 ms), exhibiting exceptional sensitivity repeatability across diverse ranges external stimuli. Therefore, ultrahigh-conductive hydrogel, produced through strategy, demonstrates significant potential applications tablet capacitive pens, writing devices, smart wearables, monitoring.

Язык: Английский

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Tough ion-electron conductive hydrogels with multi-crosslinked network for strain sensors

Polymer, Год журнала: 2025, Номер unknown, С. 128060 - 128060

Опубликована: Янв. 1, 2025

Язык: Английский

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Recent progress in stimulus-responsive hydrogel-based sensors for inflammation-associated diagnosis and surveillance

Chemical Engineering Journal, Год журнала: 2025, Номер 506, С. 159756 - 159756

Опубликована: Янв. 1, 2025

Язык: Английский

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Halloysite Nanotube modified Piezo-electric Hydrogel with Multi-Functional Properties

Sensors and Actuators A Physical, Год журнала: 2025, Номер unknown, С. 116320 - 116320

Опубликована: Фев. 1, 2025

Язык: Английский

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Thermoresponsive and Strain-Sensitive Hydrogels with Inscribable Transparency-Based Dynamic Memory Behaviors

ACS Applied Materials & Interfaces, Год журнала: 2025, Номер unknown

Опубликована: Фев. 28, 2025

Personal health management drives the development of intelligent hydrogel dressings, which pursue optical transparency, stretchability, and conductivity are required to perceive specific environmental stimuli by dynamic structure, shape, or color memory. However, incorporation weak perceptive elements black conductive polymers limits fabrication these hydrogels. Herein, we propose smart hydrogels with inscribable memorizing-forgetting transparency behavior in situ degrading immobilizing polydopamine-doped polypyrrole (PDA-PPy) nanodots into an interpenetrating poly(NIPAm-co-acrylic acid) copolymer/polyacrylamide (PNAc/PAM) network. These not only optically transparent (∼64.99%), stretchable (∼1052%), self-adhesive (21-105 kPa), highly (∼0.8 S/m), but also can temperature changes via structure shifts, enables temperature-induced reversible control. Especially, temperature-dependent transparent-opaque transition kinetics tuned protonation -COOH groups at pH < pKa, utilizing achieve inscribed programmed memory for information memorizing-forgetting-recalling based on a pH-engraved evolution response changes. be used as efficient near-infrared (NIR) light-controlled drug release carriers realize on-demand release, serve soft sensor recognize different body postures movement behaviors high strain sensitivity (gauge factor, GF = 5.98), broad working (5-500%), rapid (139 ms), excellent sensing reliability (≈1000 cycles 50% strain).

Язык: Английский

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Stretchable, tough, self-healing, antifreezing, and multifunctional nanocellulose-based hydrogel for wearable monitoring of human motion

Materials Science and Engineering B, Год журнала: 2025, Номер 317, С. 118175 - 118175

Опубликована: Март 4, 2025

Язык: Английский

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