Emerging MXene‐Based Flexible Tactile Sensors for Health Monitoring and Haptic Perception

Small, Journal Year: 2023, Volume and Issue: 19(27)

Published: March 25, 2023

Abstract Due to their potential applications in physiological monitoring, diagnosis, human prosthetics, haptic perception, and human–machine interaction, flexible tactile sensors have attracted wide research interest recent years. Thanks the advances material engineering, high performance been obtained. Among representative pressure sensing materials, 2D layered nanomaterials many properties that are superior those of bulk more suitable for sensors. As a class inorganic compounds materials science, MXene has excellent electrical, mechanical, biological compatibility. MXene‐based composites proven be promising candidates due stretchability metallic conductivity. Therefore, great efforts devoted development sensor applications. In this paper, controllable preparation characterization introduced. Then, progresses on fabrication strategies, operating mechanisms, device composite‐based sensors, including piezoresistive capacitive piezoelectric triboelectric reviewed. After that, material‐based electronics motion healthcare, artificial intelligence discussed. Finally, challenges perspectives summarized.

Language: Английский

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Recent Advances in Flexible Pressure Sensors Based on MXene Materials

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(24)

Published: Feb. 21, 2024

In the past decade, with rapid development of wearable electronics, medical health monitoring, Internet Things, and flexible intelligent robots, pressure sensors have received unprecedented attention. As a very important kind electronic component for information transmission collection, gained wide application prospect in fields aerospace, biomedical skin, human-machine interface. recent years, MXene has attracted extensive attention because its unique 2D layered structure, high conductivity, rich surface terminal groups, hydrophilicity, which brought new breakthrough sensing. Thus, it become revolutionary pressure-sensitive material great potential. this work, advances MXene-based are reviewed from aspects sensing type, mechanism, selection, structural design, preparation strategy, application. The methods strategies to improve performance analyzed details. Finally, opportunities challenges faced by discussed. This review will bring research level, promoting wider exploitation practical materials sensors.

Language: Английский

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Mechanically Robust and Transparent Organohydrogel‐Based E‐Skin Nanoengineered from Natural Skin

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(15)

Published: Jan. 29, 2023

Abstract Electronic skins (e‐skins), which are mechanically compliant with human skin, regarded as ideal electronic devices for noninvasive human–machine interaction and wearable devices. In order to fully mimic e‐skins should possess reliable mechanical properties be able resist external environmental factors like heat, cold, desiccation, bacteria, while perceiving multiple stimuli, such temperature, humidity, strain. Here, a transparent, robust, environmentally stable, versatile natural skin‐derived organohydrogel (NSD‐Gel) is nanoengineered through the integration of betaine, silver nanoparticles, sodium chloride in glycerol/water binary solvent. The transparent NSD‐Gel e‐skin exhibits outstanding tensile strength (7.33 MPa), puncture resistance, moisture retention, self‐regeneration, antibacterial properties. Additionally, possesses enhanced cold/heat resistance stimuli‐responsive characteristics that effectively sense temperature humidity changes, well physiological body motion signals. vitro vivo experiments show confers desired biocompatibility tissue protective even extremely harsh environments (−196 °C 100 °C). has great potential applications multidimensional devices, human‐machine interfaces, artificial intelligence, generating platform development high‐performance on‐demand

Language: Английский

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Piezoresistive MXene/Silk fibroin nanocomposite hydrogel for accelerating bone regeneration by Re-establishing electrical microenvironment

Bioactive Materials, Journal Year: 2022, Volume and Issue: 22, P. 1 - 17

Published: Sept. 23, 2022

The electrical microenvironment plays an important role in bone repair. However, the underlying mechanism by which stimulation (ES) promotes regeneration remains unclear, limiting design of microenvironment-specific electroactive materials. Herein, simple co-incubation aqueous suspensions at physiological temperatures, biocompatible regenerated silk fibroin (RSF) is found to assemble into nanofibrils with a β-sheet structure on MXene nanosheets, has been reported inhibit restacking and oxidation MXene. An hydrogel based RSF bioencapsulated thus prepared promote efficient regeneration. This MXene/RSF also acts as piezoresistive pressure transducer, can potentially be utilized monitor electrophysiological microenvironment. RNA sequencing performed explore mechanisms, activate Ca2+/CALM signaling favor direct osteogenesis process. ES facilitate indirect promoting polarization M2 macrophages, well stimulating neogenesis migration endotheliocytes. Consistent improvements angiogenesis are observed hydrogels under vivo. Collectively, provides distinctive promising strategy for osteogenesis, regulating immune neovascularization ES, leading re-establish

Language: Английский

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High‐Performance Hydrogel Sensors Enabled Multimodal and Accurate Human–Machine Interaction System for Active Rehabilitation

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(11)

Published: Dec. 14, 2023

Human-machine interaction (HMI) technology shows an important application prospect in rehabilitation medicine, but it is greatly limited by the unsatisfactory recognition accuracy and wearing comfort. Here, this work develops a fully flexible, conformable, functionalized multimodal HMI interface consisting of hydrogel-based sensors self-designed flexible printed circuit board. Thanks to component regulation structural design hydrogel, both electromyogram (EMG) forcemyography (FMG) signals can be collected accurately stably, so that they are later decoded with assistance artificial intelligence (AI). Compared traditional multichannel EMG signals, human-machine method based on combination FMG significantly improves efficiency increasing information entropy signals. The decoding from only two channels for different gestures reaches 91.28%. resulting AI-powered active system control pneumatic robotic glove assist stroke patients completing movements according recognized human motion intention. Moreover, further generalized applied other remote sensing platforms, such as manipulators, intelligent cars, drones, paving way future robot systems.

Language: Английский

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Strategies in the preparation of conductive polyvinyl alcohol hydrogels for applications in flexible strain sensors, flexible supercapacitors, and triboelectric nanogenerator sensors: an overview

Advanced Composites and Hybrid Materials, Journal Year: 2023, Volume and Issue: 6(6)

Published: Nov. 8, 2023

Language: Английский

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Wearable and high-performance piezoresistive sensor based on nanofiber/sodium alginate synergistically enhanced MXene composite aerogel

Chemical Engineering Journal, Journal Year: 2022, Volume and Issue: 451, P. 138586 - 138586

Published: Aug. 10, 2022

Language: Английский

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Flexible Antiswelling Photothermal‐Therapy MXene Hydrogel‐Based Epidermal Sensor for Intelligent Human–Machine Interfacing

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(21)

Published: Feb. 26, 2023

Abstract Conductive hydrogel‐based epidermal sensors are regarded with broad prospects in bridging the gap between human and machine for personalized healthcare. However, it is still challenging to simultaneously achieve high sensitivity, wide sensing range, reliable cycling stability ultrasensitive human–machine interfacing, along brilliant antiswelling capability, near‐infrared (NIR) light‐triggered dissociation drug release further smart on‐demand photothermal therapy. Herein, facile preparation of a flexible multifunctional sensor from elaborately fabricated, highly stretchable, MXene hydrogel presented. It exhibits range (up 350% strain), reproducibility enabling human‐machine interfacing. displays excellent capability avoid expanding wound due excessive swelling Furthermore, possesses good biocompatibility robust performance therapy after healthcare monitoring. Meanwhile, can be triggered softened partly dissociated under prolonged NIR light irradiation transformation temperature‐sensitive low‐melting‐point Agar into sol state partial loaded on demand synergistically sterilizing bacteria efficiently promoting healing.

Language: Английский

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Ti₃C₂T_x MXene-Based Multifunctional Tactile Sensors for Precisely Detecting and Distinguishing Temperature and Pressure Stimuli

ACS Nano, Journal Year: 2023, Volume and Issue: 17(16), P. 16036 - 16047

Published: Aug. 14, 2023

Although skin-like sensors that can simultaneously detect various physical stimuli are of fair importance in cutting-edge human-machine interaction, robotic, and healthcare applications, they still face challenges facile, scalable, cost-effective production using conventional active materials. The emerging two-dimensional transition metal carbide, Ti3C2Tx MXene, integrated with favorable thermoelectric properties, metallic-like conductivity, a hydrophilic surface, is promising for solving these problems. Herein, multifunctional designed to precisely distinguish temperature pressure without cross-talk by decorating elastic porous substrates MXene sheets. Because the combination conductive thermally insulating, elastic, substrate integrates efficient Seebeck piezoresistive effects, resultant sensor exhibits not only an ultralow detection limit (0.05 K), high signal-to-noise ratio, excellent cycling stability but also sensitivity, fast response time, outstanding durability detection. Based on impressive dual-mode sensing properties independent detections, multimode input terminal electronic skin created, exhibiting great potential robotic interaction applications. This work provides scalable fabrication tactile detecting distinguishing stimuli.

Language: Английский

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

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(31)

Published: March 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.

Language: Английский

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