Electrospinning of nanofibres

Nature Reviews Methods Primers, Journal Year: 2024, Volume and Issue: 4(1)

Published: Jan. 4, 2024

Language: Английский

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Artificial Intelligence Meets Flexible Sensors: Emerging Smart Flexible Sensing Systems Driven by Machine Learning and Artificial Synapses

Nano-Micro Letters, Journal Year: 2023, Volume and Issue: 16(1)

Published: Nov. 13, 2023

The recent wave of the artificial intelligence (AI) revolution has aroused unprecedented interest in intelligentialize human society. As an essential component that bridges physical world and digital signals, flexible sensors are evolving from a single sensing element to smarter system, which is capable highly efficient acquisition, analysis, even perception vast, multifaceted data. While challenging manual perspective, development intelligent been remarkably facilitated owing rapid advances brain-inspired AI innovations both algorithm (machine learning) framework (artificial synapses) level. This review presents progress emerging AI-driven, systems. basic concept machine learning synapses introduced. new enabling features induced by fusion comprehensively reviewed, significantly applications such as sensory systems, soft/humanoid robotics, activity monitoring. two most profound twenty-first century, deep incorporation technology holds tremendous potential for creating beings.

Language: Английский

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A 10-micrometer-thick nanomesh-reinforced gas-permeable hydrogel skin sensor for long-term electrophysiological monitoring

Science Advances, Journal Year: 2024, Volume and Issue: 10(2)

Published: Jan. 10, 2024

Hydrogel-enabled skin bioelectronics that can continuously monitor health for extended periods is crucial early disease detection and treatment. However, it challenging to engineer ultrathin gas-permeable hydrogel sensors self-adhere the human long-term daily use (>1 week). Here, we present a ~10-micrometer-thick polyurethane nanomesh-reinforced sensor continuous high-quality electrophysiological monitoring 8 days under life conditions. This research involves two key steps: (i) material design by gelatin-based thermal-dependent phase change hydrogels (ii) robust thinness geometry achieved through nanomesh reinforcement. The resulting exhibit thickness of ~10 micrometers with superior mechanical robustness, high adhesion, gas permeability, anti-drying performance. To highlight potential applications in treatment leverage collective features, demonstrate long-term, high-precision conditions up days.

Language: Английский

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A Multifunctional and Selective Ionic Flexible Sensor with High Environmental Suitability for Tactile Perception

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 34(6)

Published: Oct. 22, 2023

Abstract Inspired by the tactile sensory mechanism of human skin, ionic hydrogels‐derived flexible sensors have attracted much attention since they can produce output signals that match recognition mode nerves, showing a potential application in human‐machine interaction. Unfortunately, practical sensing properties hydrogels are restricted drawbacks hydroelastic instability and non‐selective response ability, such as poor mechanical strength, irretentive solvent retaining capacity, low‐temperature intolerance. Herein, this study, novel physical‐crosslink enhanced hydrogel‐PVA/PEG/TA‐MXene‐Na + /Li (PPM‐NL) nanocomposite is prepared shows well comprehensive strength (400% elongation at break, 0.93 MPa), electrical conductivity (8.1 S m −1 ), tear resistance, self‐healing anti‐freezing/drying features (93% water retention after sixty days frost resistance −27 °C). The PPM‐NL hydrogel‐derived sensor displays selective behavior to tensile compressive deformation with high sensitivity (G = 1.12) rapid time (only 60 ms). Further, device applied monitor joint motions humanoid hands integrated into manipulators recognize thickness softness objects, superior environmental stability. It be believed will provide inspiration for developing next‐generation biomimetic perception robots.

Language: Английский

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Recent Advances in Poly(vinyl alcohol)-Based Hydrogels

Polymers, Journal Year: 2024, Volume and Issue: 16(14), P. 2021 - 2021

Published: July 15, 2024

Poly(vinyl alcohol) (PVA) is a versatile synthetic polymer, used for the design of hydrogels, porous membranes and films. Its solubility in water, film- hydrogel-forming capabilities, non-toxicity, crystallinity excellent mechanical properties, chemical inertness stability towards biological fluids, superior oxygen gas barrier good printability availability (relatively low production cost) are main aspects that make PVA suitable variety applications, from biomedical pharmaceutical uses to sensing devices, packaging materials or wastewater treatment. However, pure present limited flexibility poor biocompatibility biodegradability, which restrict its use alone various applications. mixed with other polymers biomolecules (polysaccharides, proteins, peptides, amino acids etc.), as well inorganic/organic compounds, generates wide PVA’s shortcomings considerably improved, new functionalities obtained. Also, transformation brings features opens door unexpected uses. The review focused on recent advances PVA-based hydrogels.

Language: Английский

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Versatile Biomass‐Based Injectable Photothermal Hydrogel for Integrated Regenerative Wound Healing and Skin Bioelectronics

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

Published: May 11, 2024

Abstract The continuously growing utilization of wound healing materials and skin bioelectronics urges the development flexible hydrogels for personal therapy health management. Versatile conductive prepared from natural biomass are ideal candidates as one promising solutions chronic Here, study proposes a kind robust (strain: 1560.8%), adhesive, self‐healing, injectable, antibacterial (sterilization rate: 99%), near‐infrared (NIR) photothermal responsive, biocompatible, hydrogel (CPPFe@TA) composed carboxymethyl cellulose tannic acid/iron ion complex (TA@Fe 3+ ), featuring rapid self‐assembly tunable crosslinking time. TA@Fe facilitated self‐catalysis polymerization reaction, time could be controlled by adjusting Fe concentration. Under NIR irradiation, exhibited remarkable performance. In full‐thickness defect repair experiment on mice, dressing significantly enhanced healing. After 14 days, rate (95.49%) CPPFe@TA3 + treatment greatly exceeded that commercial dressings. Meanwhile, has good electrical conductivity thermo‐responsiveness, making them in physiological signal monitoring rehabilitation exercise This work therefore offers strategy developing versatile biomass‐based hydrogels, which is expected to applicable integrated regenerative bioelectronics.

Language: Английский

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Multifunctional Conductive Hydrogel Interface for Bioelectronic Recording and Stimulation

Advanced Healthcare Materials, Journal Year: 2024, Volume and Issue: 13(22)

Published: May 22, 2024

The past few decades have witnessed the rapid advancement and broad applications of flexible bioelectronics, in wearable implantable electronics, brain-computer interfaces, neural science technology, clinical diagnosis, treatment, etc. It is noteworthy that soft elastic conductive hydrogels, owing to their multiple similarities with biological tissues terms mechanics, water-rich, functions, successfully bridged gap between rigid electronics biology. Multifunctional hydrogel emerging as a new generation promising material candidates, authentically established highly compatible reliable, high-quality bioelectronic particularly recording stimulation. This review summarizes basis design principles involved constructing systematically discusses fundamental mechanism unique advantages bioelectrical interfacing surface. Furthermore, an overview state-of-the-art manufacturing strategies for interfaces enhanced biocompatibility integration system presented. finally exemplifies unprecedented impetus toward stimulation, especially integrated systems, concludes perspective expectation bioelectronics biomedical applications.

Language: Английский

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Wireless Battery-free and Fully Implantable Organ Interfaces

Chemical Reviews, Journal Year: 2024, Volume and Issue: 124(5), P. 2205 - 2280

Published: Feb. 21, 2024

Advances in soft materials, miniaturized electronics, sensors, stimulators, radios, and battery-free power supplies are resulting a new generation of fully implantable organ interfaces that leverage volumetric reduction mechanics by eliminating electrochemical storage. This device class offers the ability to provide high-fidelity readouts physiological processes, enables stimulation, allows control over organs realize therapeutic diagnostic paradigms. Driven seamless integration with connected infrastructure, these devices enable personalized digital medicine. Key advances carefully designed material, electrophysical, electrochemical, electromagnetic systems form implantables mechanical properties closely matched target deliver functionality supports sensors stimulators. The elimination operation, anywhere from acute, lifetimes matching subject physical dimensions imperceptible operation. review provides comprehensive overview basic building blocks related topics such as implantation, delivery, sterilization, user acceptance. State art examples categorized system an outlook interconnection advanced strategies for computation leveraging consistent influx elevate this current battery-powered is highlighted.

Language: Английский

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Multistrand Twisted Triboelectric Kevlar Yarns for Harvesting High Impact Energy, Body Injury Location and Levels Evaluation

Advanced Science, Journal Year: 2024, Volume and Issue: 11(21)

Published: March 15, 2024

Abstract Developing ultrahigh‐strength fabric‐based triboelectric nanogenerators for harvesting high‐impact energy and sensing biomechanical signals is still a great challenge. Here, the constraints are addressed by design of multistrand twisted Kevlar (MTTK) yarn using conductive non‐conductive fibers. Manufactured twisting process, MTTK offers superior tensile strength (372 MPa), compared to current yarns. In addition, self‐powered impact fabric patch (SP‐ISFP) comprising signal acquisition, processing, communication circuit, yarns integrated. The SP‐ISFP features withstanding (4 GPa) sensitivity response time under high condition (59.68 V GPa −1 ; 0.4 s). Furthermore, multi‐channel smart bulletproof vest developed array 36 SP‐ISFPs, enabling reconstruction mapping assessment body injury location levels real‐time data acquisition. Their potential reduce injuries, professional security, construct multi‐point personal vital signs dynamic monitoring platform holds promise.

Language: Английский

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Hysteresis-free, fatigue-resistant and self-adhesive conductive hydrogel electronics towards multimodal wearable application

Nano Energy, Journal Year: 2024, Volume and Issue: 126, P. 109586 - 109586

Published: April 6, 2024

Language: Английский

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