Poly(p-Phenylene Benzobisoxazole) Nanofiber: A Promising Nanoscale Building Block Toward Extremely Harsh Conditions

ACS Nano, Год журнала: 2025, Номер unknown

Опубликована: Янв. 6, 2025

Since the invention and commercialization of poly(

Язык: Английский

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Ways forward with conductive hydrogels: Classifications, properties, and applications in flexible electronic and energy gadgets

Materials Science and Engineering R Reports, Год журнала: 2025, Номер 163, С. 100923 - 100923

Опубликована: Янв. 8, 2025

Язык: Английский

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

InfoMat, Год журнала: 2025, Номер unknown

Опубликована: Фев. 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

Язык: Английский

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Graphene‐Doped Hydrogels with Enhanced Conductivity and Stretchability for All‐Weather Wearable Devices

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 19, 2025

Abstract Conductive hydrogels with high water content, excellent adhesion, and mechanical flexibility have garnered significant attention for flexible wearable electronic applications. Despite advancements, achieving robust electrical properties under extreme environmental conditions remains a key challenge. In this study, cost‐effective, lignin‐tannin nanosphere graphene‐doped hydrogel (LTGH) synthesized by dispersing graphene within the matrix via self‐assembled sodium lignosulfonate tannic acid nanospheres is presented. The LTGH exhibits exceptional conductivity (28 S m −1 ), ultra‐high sensitivity (maximum gauge factor ≈350), an ultra‐low detection limit (<0.5%). Additionally, it demonstrates outstanding stretchability (>1800%), strong adhesion (>50 kPa), UV resistance, antibacterial properties. By incorporating ethylene glycol, maintains reliable performance across wide temperature range (−80 to 50 °C). Furthermore, successfully integrated into convolutional neural network‐based sign language recognition system, compact lightweight design accuracy, rapid responsiveness, cost efficiency. This work highlights superior sensing capabilities of conductive hydrogels, underscoring their potential in all‐weather technologies.

Язык: Английский

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Ultrathin crystalline silicon–based omnidirectional strain gauges for implantable/wearable characterization of soft tissue biomechanics

Science Advances, Год журнала: 2024, Номер 10(41)

Опубликована: Окт. 9, 2024

Monitoring soft-tissue biomechanics is of interest in biomedical research and clinical treatment diseases. An important focus biointegrated strain gauges that track time-dependent mechanics targeted tissues with deforming surfaces over multidirections. Existing methods provide limited gauge factors, tailored for sensing within specific directions under quasi-static conditions. We present development applicability implantable/wearable integrate multiple ultrathin monocrystalline silicon-based sensors aligned different directions, stretchable formats dynamically monitoring direction angle-sensitive strain. experimentally computationally establish operational principles, theoretical systems enable determination intensities applied strains at an omnidirectional scale. Wearable evaluations range from cardiac pulse to intraocular pressure eyeballs. The device can evaluate disorders myocardial infarction hypoxia living rats locate the pathological orientation associated infarction, designs possibilities as biodegradable implants stable operation. These findings create significance devices complex dynamic biomechanics.

Язык: Английский

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Ion-conductive hydrogel sensor prepared with alginate crosslinker for wide-range motion and temperature monitoring

Carbohydrate Polymers, Год журнала: 2025, Номер 354, С. 123278 - 123278

Опубликована: Янв. 19, 2025

Язык: Английский

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Structure and Wiring Optimized TT/MT Double‐Helical Fiber Sensors: Fabrication and Applications in Human Motion Monitoring and Gesture Recognition

Advanced Science, Год журнала: 2025, Номер unknown

Опубликована: Фев. 4, 2025

Abstract A fibrous flexible sensor, with its small size, minimally burdens the human body, ranking among most user‐friendly sensors. However, application is often limited by damage caused electrode movement, as sensors are typically attached to joints, which can be greatly alleviated placing two electrodes on same side. Inspired hydrogen bonds in double‐helical structure of DNA, design commonly found and applied fiber‐based batteries supercapacitors into through coaxial wet‐spinning further treatment. The double helical sensor exhibits high strength maintains stable operation prepared under over 300% strain gauge factors (GF) 0.9, 39.5, 349, respectively, working ranges. This unique single‐sided also enabled applications such water flow sensing. a smart glove capable real‐time integrated, five‐channel finger motion detection, used convolutional neural network (CNN)‐based machine learning algorithm achieve 98.8% accuracy recognizing six common gestures. study provides novel approach optimize distribution an internally encapsulated structure, making significant contribution field

Язык: Английский

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Emerging Combination of Hydrogel and Electrochemical Biosensors

Small, Год журнала: 2024, Номер unknown

Опубликована: Дек. 16, 2024

Abstract Electrochemical sensors are among the most promising technologies for biomarker research, with outstanding sensitivity, selectivity, and rapid response capabilities that make them important in medical diagnostics prognosis. Recently, hydrogels have gained attention domain of electrochemical biosensors because their superior biocompatibility, excellent adhesion, ability to form conformal contact diverse surfaces. These features provide distinct advantages, particularly advancement wearable biosensors. This review examines contemporary utilization sensing, explores strategies optimization prospective development trajectories, highlights distinctive advantages. The objective is an exhaustive overview foundational principles sensing systems, analyze compatibility hydrogel properties methodologies, propose potential healthcare applications further illustrate applicability. Despite significant advances hydrogel‐based biosensors, challenges persist, such as improving material fatigue resistance, interfacial maintaining balanced water content across various environments. Overall, immense flexible exciting opportunities. However, resolving current obstacles will necessitate additional research efforts.

Язык: Английский

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Highly Conductive and Tough Hydrogels Based on Modulated Nanofluidic Channel Structures

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

Опубликована: Июнь 2, 2025

Язык: Английский

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A Highly Sensitive, Low Creep Hydrogel Sensor for Plant Growth Monitoring

Sensors, Год журнала: 2024, Номер 24(19), С. 6197 - 6197

Опубликована: Сен. 25, 2024

Ion−conducting hydrogels show significant potential in plant growth monitoring. Nevertheless, traditional ionic hydrogel sensors experience substantial internal creep and inadequate sensitivity, hindering precise In this study, we developed a flexible sensor composed of polyvinyl alcohol acrylamide. The exhibits low high sensitivity. Polyvinyl alcohol, acrylamide, glycerol are crosslinked to create robust interpenetrating double network structure. strong interactions, such as van der Waals forces, between the networks minimize under external stress, reducing drift ratio by 50% rate more than 60%. Additionally, sodium chloride AgNWs enrich with conductive ions pathways, enhancing sensor’s conductivity demonstrating excellent response time (0.4 s) recovery (0.3 s). When used for monitoring, sensitivity small strains stability long−term This establishes foundation developing health monitoring systems utilizing renewable biomass materials.

Язык: Английский

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