Fatigue‐Resistant Conducting Polymer Hydrogels as Strain Sensor for Underwater Robotics

Advanced Functional Materials, Год журнала: 2023, Номер 33(42)

Опубликована: Июль 14, 2023

Abstract Conducting polymer hydrogels are widely used as strain sensors in light of their distinct skin‐like softness, sensitivity, and environmental adaptiveness the fields wearable devices, soft robots, human‐machine interface. However, mechanical electrical properties existing conducting hydrogels, especially fatigue‐resistance sensing robustness during long‐term application, unsatisfactory, which severely hamper practical utilities. Herein, a strategy to fabricate with anisotropic structures mechanics is presented through combined freeze‐casting salting‐out process. The as‐fabricated exhibit high fatigue threshold (>300 J m −2 ), low Young's modulus (≈100 kPa), well (over 10 000 cycles). Such superior performance enables application monitor real‐time movement underwater robotics. design fabrication for reported this study may open up an enticing avenue functional materials electronics

Язык: Английский

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Flexible Conformally Bioadhesive MXene Hydrogel Electronics for Machine Learning‐Facilitated Human‐Interactive Sensing

Advanced Materials, Год журнала: 2024, Номер 36(31)

Опубликована: Март 29, 2024

Wearable epidermic electronics assembled from conductive hydrogels are attracting various research attention for their seamless integration with human body conformally real-time health monitoring, clinical diagnostics and medical treatment, human-interactive sensing. Nevertheless, it remains a tremendous challenge to simultaneously achieve bioadhesive remarkable self-adhesiveness, reliable ultraviolet (UV) protection ability, admirable sensing performance high-fidelity epidermal electrophysiological signals along timely photothermal therapeutic performances after diagnostic sensing, as well efficient antibacterial activity hemostatic effect potential therapy. Herein, hydrogel-based sensor, featuring superior self-adhesiveness excellent UV-protection performance, is developed by dexterously assembling conducting MXene nanosheets network biological hydrogel polymer stably attaching onto skin high-quality recording of high signal-to-noise ratios (SNR) low interfacial impedance intelligent diagnosis smart human-machine interface. Moreover, sign language gesture recognition platform based on collected electromyogram (EMG) designed hassle-free communication hearing-impaired people the help advanced machine learning algorithms. Meanwhile, possesses capability, biocompatibility, effective hemostasis properties promising bacterial-infected wound bleeding.

Язык: Английский

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An overview of conductive composite hydrogels for flexible electronic devices

Advanced Composites and Hybrid Materials, Год журнала: 2024, Номер 7(2)

Опубликована: Фев. 17, 2024

Язык: Английский

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Injectable ultrasonic sensor for wireless monitoring of intracranial signals

Nature, Год журнала: 2024, Номер 630(8015), С. 84 - 90

Опубликована: Июнь 5, 2024

Язык: Английский

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Anti-bacterial, anti-freezing starch/ionic liquid/PVA ion-conductive hydrogel with high performance for multi-stimulation sensitive responsive sensors

Chemical Engineering Journal, Год журнала: 2023, Номер 477, С. 147065 - 147065

Опубликована: Ноя. 10, 2023

Язык: Английский

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3D Printed Electronic Skin for Strain, Pressure and Temperature Sensing

Advanced Functional Materials, Год журнала: 2024, Номер 34(22)

Опубликована: Янв. 9, 2024

Abstract Electronic skin (E‐skin) that can mimic the flexibility and stretchability of human with sensing capabilities, holds transformative potential in robotics, wearable technology, healthcare. However, developing E‐skin poses significant challenges such as creating durable materials skin‐like flexibility, integrating biosensing abilities, using advanced fabrication techniques for or implantable applications. To overcome these hurdles, a 3D‐printed electronic utilizing novel class nanoengineered hydrogels tunable thermal capabilities is fabricated. This methodology takes advantage shear–thinning behavior hydrogel precursors, allowing to construct intricate 2D 3D structures. The elasticity triple crosslinking robust fungal exopolysaccharide, pullulan simulated, while defect‐rich molybdenum disulfide (MoS 2 ) nanoassemblies ensure high electrical conductivity. addition polydopamine nanoparticles enhances adhesion wet tissue. exhibits outstanding stretchability, adhesion, moldability, A distinctive feature this technology precise detection dynamic changes strain, pressure, temperature. As motion tracker, phonatory‐recognition platform, flexible touchpad, thermometer, represents breakthrough skins future robotics human‐machine interfaces.

Язык: Английский

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Advancements in Metal‐Organic, Enzymatic, and Nanocomposite Platforms for Wireless Sensors of the Next Generation

Advanced Functional Materials, Год журнала: 2024, Номер 34(45)

Опубликована: Июнь 12, 2024

Abstract Advanced wireless sensors, incorporating metal‐organic frameworks (MOFs), enzymatic systems, and nanocomposites, offer unparalleled solutions for monitoring analytes human physiological signals. These cutting‐edge when used with external devices, enable real‐time of physicochemical processes within the body, thereby enhancing understanding complex biological systems. This study presents advancements in sensor development, fabrication techniques, user‐friendly protocols. The performance these sensors is evaluated based on their selectivity, sensitivity, detection limits. Moreover, this article explores limitations, challenges, key strategies to enhance analyte recognition from onsite environmental species, ensuring point‐of‐care safety.

Язык: Английский

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Chitosan-based hydrogel dressings for diabetic wound healing via promoting M2 macrophage-polarization

Carbohydrate Polymers, Год журнала: 2024, Номер 331, С. 121873 - 121873

Опубликована: Янв. 30, 2024

Язык: Английский

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Ion gradient induced self-powered flexible strain sensor

Nano Energy, Год журнала: 2024, Номер 126, С. 109689 - 109689

Опубликована: Апрель 30, 2024

Язык: Английский

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A Cellulose/Chitosan Dual Cross‐Linked Multifunctional and Resilient Hydrogel for Emergent Open Wound Management

Advanced Healthcare Materials, Год журнала: 2024, Номер 13(13)

Опубликована: Янв. 31, 2024

Adhesive hydrogel holds huge potential in biomedical applications, such as hemostasis and emergent wound management during outpatient treatment or surgery. However, most adhesive hydrogels underperform to offer robust adhesions on the wet tissue, increasing risk of hemorrhage reducing fault tolerance To address this issue, work develops a polysaccharide-based bioadhesive tape (ACAN) consisting dual cross-linking allyl cellulose (AC) carboxymethyl chitosan (CMCS). The hygroscopicity AC CMCS networks enables ACAN remove interfacial water from tissue surface initializes physical cross-link instantly. Subsequently, covalent cross-links are developed with amine moieties sustain long-term adhesion. cross-linked also has good cytocompatibility controllable mechanical properties matching where addition provides remarkable antibacterial hemostatic capability. Moreover, compared commercially available 3 M film, an ultrafast healing tissue. hybrid have advantages biocompatibility antibacterial, hemostatic, properties, shedding new light first-aid design advancing cellulose-based materials technology for high-performance applications.

Язык: Английский

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