High‐Stretchability, Ultralow‐Hysteresis ConductingPolymer Hydrogel Strain Sensors for Soft Machines

Advanced Materials, Год журнала: 2022, Номер 34(32)

Опубликована: Июнь 21, 2022

Highly stretchable strain sensors based on conducting polymer hydrogel are rapidly emerging as a promising candidate toward diverse wearable skins and sensing devices for soft machines. However, due to the intrinsic limitations of low stretchability large hysteresis, existing cannot fully exploit their potential when used in or robotic systems. Here, sensor exhibiting both ultimate (300%) negligible hysteresis (<1.5%) is presented. This achieved through unique microphase semiseparated network design by compositing poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) nanofibers with poly(vinyl alcohol) (PVA) facile fabrication combining 3D printing successive freeze-thawing. The overall superior performances including stretchability, linearity, cyclic stability, robustness against mechanical twisting pressing systematically characterized. integration application such electronic further demonstrated measure various physiological signals, identify hand gestures, enable gripper objection recognition, remote control an industrial robot. work may offer hydrogels enhanced functionalities technical platforms intelligent

Язык: Английский

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Self-Healing Hydrogels: From Synthesis to Multiple Applications

ACS Materials Letters, Год журнала: 2023, Номер 5(7), С. 1787 - 1830

Опубликована: Май 26, 2023

Due to the good reliability and long-term stability, self-healing hydrogels have emerged as promising soft materials for tissue engineering, smart wearable sensors, bioelectronics, energy storage devices. The mechanism depends on reversible chemical or physical cross-linking interactions. Self-healing with fascinating features (including mechanical performances, biocompatibility, conductivity, antibacterial ability, responsiveness, etc.) are being designed developed according practical application requirements. In this review, recent progress in their synthesis strategies multiple applications is summarized. Their involve processes a combination of two. include flexible strain supercapacitors, actuators, adhesives, wound healing, drug delivery, tumor treatment, 3D printing, etc. Finally, current challenges, future development, opportunities discussed.

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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Liquid Metal-Doped Conductive Hydrogel for Construction of Multifunctional Sensors

Analytical Chemistry, Год журнала: 2023, Номер 95(7), С. 3811 - 3820

Опубликована: Фев. 7, 2023

Interest in wearable and stretchable multifunctional sensors has grown rapidly recent years. The sensing elements must accurately detect external stimuli to expand their applicability as sensors. However, the sensor's self-healing adhesion a target object have been major challenges developing such practical versatile devices. In this study, we prepared hydrogel (LM-SA-PAA) composed of liquid metal (LM), sodium alginate (SA), poly(acrylic acid) (PAA) with ultrastretchable, excellent self-healing, self-adhesive, high-sensitivity capabilities that enable conformal contact between sensor skin even during dynamic movements. performance stems from its double cross-linked networks, including physical chemical networks. cross-link formed by ionic interaction carboxyl groups PAA gallium ions provide reversible autonomous repair properties, whereas covalent bond provides stable strong network. Alginate forms microgel shell around LM nanoparticles via coordination Ga ions. addition offering exceptional colloidal stability, sufficient polar groups, ensuring adheres diverse substrates. Based on efficient electrical pathway provided LM, exhibited strain sensitivity enabled detection various human motions electrocardiographic monitoring. preparation method is simple can be used for low-cost fabrication sensors, which broad application prospects human-machine interface compatibility medical

Язык: Английский

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Construction and characterization of highly stretchable ionic conductive hydrogels for flexible sensors with good anti-freezing performance

European Polymer Journal, Год журнала: 2023, Номер 186, С. 111827 - 111827

Опубликована: Янв. 9, 2023

Язык: Английский

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Electronic Skin for Health Monitoring Systems: Properties, Functions, and Applications

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

Опубликована: Май 17, 2024

Abstract Electronic skin (e‐skin), a skin‐like wearable electronic device, holds great promise in the fields of telemedicine and personalized healthcare because its good flexibility, biocompatibility, conformability, sensing performance. E‐skin can monitor various health indicators human body real time over long term, including physical (exercise, respiration, blood pressure, etc.) chemical (saliva, sweat, urine, etc.). In recent years, development materials, analysis, manufacturing technologies has promoted significant e‐skin, laying foundation for application next‐generation medical devices. Herein, properties required e‐skin monitoring devices to achieve long‐term precise summarize several detectable field are discussed. Subsequently, applications integrated systems reviewed. Finally, current challenges future directions this This review is expected generate interest inspiration improvement systems.

Язык: Английский

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Self-healing hydrogels as injectable implants: Advances in translational wound healing

Coordination Chemistry Reviews, Год журнала: 2024, Номер 509, С. 215790 - 215790

Опубликована: Март 20, 2024

Язык: Английский

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Mechanically Robust and Anti‐Swelling Anisotropic Conductive Hydrogel with Fluorescence for Multifunctional Sensing

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Авг. 24, 2024

Abstract The intricate muscle arrangement structure endows the biological tissues with unique mechanical properties. Inspired by that, a mechanically robust and multifunctional anisotropic Polyacrylamide/Sodium alginate/Zirconium ion/Carbon dots (PAM/SA/Zr 4+ /CDs, PSZC) hydrogel is developed through synergistic effect of mechanical‐assisted stretching, Zr metal‐coordination CDs embedding. resulting exhibited an impressive tensile strength 2.56 MPa exceptional toughness 10.10 MJ m −3 along stretching direction, attributing to oriented alignment PAM SA molecular chains induced metal‐coordination. dense network endowed PSZC excellent anti‐swelling performance, achieving swelling ratio only 1.7% after being stored in water for 30 days. presence conferred remarkable electrical conductivity 2.15 S −1 hydrogel. Furthermore, integration carbon imparted fluorescence properties, rendering it visual sensing capabilities. Overall, straightforward strategy proposed fabricating suitable underwater sensing, offering valuable insights development high‐performance sensors.

Язык: Английский

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Mechanically robust, transparent, conductive hydrogels based on hydrogen bonding, ionic coordination interactions and electrostatic interactions for light-curing 3D printing

Chemical Engineering Journal, Год журнала: 2024, Номер 486, С. 150289 - 150289

Опубликована: Март 11, 2024

Язык: Английский

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All 3D-printed high-sensitivity adaptive hydrogel strain sensor for accurate plant growth monitoring

Soft Science, Год журнала: 2025, Номер 5(1)

Опубликована: Янв. 16, 2025

Highly sensitive strain sensors are crucial for monitoring subtle plant growth changes and show diverse applications in sensing. However, the prevailing integrated fabrication methods such tend to be costly complex, impeding their fundamental design practical usage. Herein, we develop a simple effective multimaterial all-3D printing technique manufacture with multilayered structure. Such an all-3D-printed sensor exhibits excellent sensing performance enabling precise detection of minor strains growth, including high stretchability (> 300%), sensitivity (~12.78) good linearity (0.98), long-term stability over 3,000 loading/unloading cycles. We further validate potential our 3D-printed accurate continuous bamboo both horizontal vertical directions 14 days. Our offers promising avenue systems toward monitoring.

Язык: Английский

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