Nanocellulose-Assisted Construction of Multifunctional MXene-Based Aerogels with Engineering Biomimetic Texture for Pressure Sensor and Compressible Electrode

Nano-Micro Letters, Год журнала: 2023, Номер 15(1)

Опубликована: Апрель 10, 2023

Multifunctional architecture with intriguing structural design is highly desired for realizing the promising performances in wearable sensors and flexible energy storage devices. Cellulose nanofiber (CNF) employed assisting building conductive, hyperelastic, ultralight Ti3C2Tx MXene hybrid aerogels oriented tracheid-like texture. The biomimetic are constructed by a facile bidirectional freezing strategy CNF, carbon nanotube (CNT), based on synergistic electrostatic interaction hydrogen bonding. Entangled CNF CNT "mortars" bonded "bricks" of tracheid structure produce good interfacial binding, superior mechanical strength (up to 80% compressibility extraordinary fatigue resistance 1000 cycles at 50% strain). Benefiting from texture, CNF/CNT/MXene aerogel shows ultralow density 7.48 mg cm-3 excellent electrical conductivity (~ 2400 S m-1). Used as pressure sensors, such exhibit appealing sensitivity performance linear up 817.3 kPa-1, which affords their application monitoring body surface information detecting human motion. Furthermore, can also act electrode materials compressive solid-state supercapacitors that reveal satisfactory electrochemical (849.2 mF cm-2 0.8 mA cm-2) long cycle compression (88% after 10,000 strain 30%).

Язык: Английский

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Deep-Learning Enabled Active Biomimetic Multifunctional Hydrogel Electronic Skin

ACS Nano, Год журнала: 2023, Номер 17(16), С. 16160 - 16173

Опубликована: Июль 31, 2023

There is huge demand for recreating human skin with the functions of epidermis and dermis interactions physical world. Herein, a biomimetic, ultrasensitive, multifunctional hydrogel-based electronic (BHES) was proposed. Its function mimicked using poly(ethylene terephthalate) nanoscale wrinkles, enabling accurate identification materials through capabilities to gain/lose electrons during contact electrification. Internal mechanoreceptor by interdigital silver electrodes stick–slip sensing identify textures/roughness. The patterned microcone hydrogel, achieving pressure sensors high sensitivity (17.32 mV/Pa), large range (20–5000 Pa), low detection limit, fast response (10 ms)/recovery time (17 ms). Assisted deep learning, this BHES achieved accuracy minimized interference in identifying (95.00% 10 materials) textures (97.20% four roughness cases). By integrating signal acquisition/processing circuits, wearable drone control system demonstrated three-degree-of-freedom movement enormous potentials soft robots, self-powered human–machine interaction interfaces digital twins.

Язык: Английский

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Wearable Hybrid Device Capable of Interactive Perception with Pressure Sensing and Visualization

Advanced Functional Materials, Год журнала: 2022, Номер 32(44)

Опубликована: Авг. 7, 2022

Abstract A wearable interactive device that can synchronously detect and visualize pressure, stimuli will supplement easily identifiable in situ signals with conventional sensing outputs only electronic signals. Currently, most devices are composed of physically connected separate pressure sensors display elements, which do not conform to the development miniaturization high integration. The realization combining these two functions one a simplified configuration is still beginning be explored. Inspired by two‐in‐one response octopus, both sense stimuli, an integrated hybrid based on ionic electrochromic proposed for perception. By efficiently reusing electrodes gel, enables quantitative direct color changing pressure. Benefiting from its excellent comprehensive performance, applications explored verified, including perception information, hiding visual information under regulation, repeated writing erasing flexible boards. Notably, multiple customized systems improved design flexibility implemented provide remote monitoring warning behavioral states physiological parameters. This study diversifies solutions realize link between detection visualization.

Язык: Английский

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Bioinspired MXene‐Based Piezoresistive Sensor with Two‐stage Enhancement for Motion Capture

Advanced Functional Materials, Год журнала: 2023, Номер 33(18)

Опубликована: Фев. 9, 2023

Abstract Structured piezoresistive membranes are compelling building blocks for wearable bioelectronics. However, the poor structural compressibility of conventional microstructures leads to rapid saturation detection range and low sensitivity devices, limiting their commercial applications. Herein, a bioinspired MXene‐based device is reported, which can effectively boost while broadening response by architecting intermittent villus‐like microstructures. Benefitting from two‐stage amplification effect this architecture, developed bioelectronics exhibit high 461 kPa −1 broad pressure up 311 kPa, about 20 5 times higher than that homogeneous microstructures, respectively. Cooperating with deep‐learning algorithm, designed capture complex human movements precisely identify motion recognition accuracy 99%. Evidently, architecture biomimetic strategy may pave promising avenue overcome limitation in bioelectronics, provide general way promote its large‐scale

Язык: Английский

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Maximizing Electron Channels Enabled by MXene Aerogel for High-Performance Self-Healable Flexible Electronic Skin

ACS Nano, Год журнала: 2023, Номер 17(2), С. 1393 - 1402

Опубликована: Янв. 9, 2023

Among the increasingly popular miniature and flexible smart electronics, two-dimensional materials show great potential in development of electronics owing to their layered structures outstanding electrical properties. MXenes have attracted much attention excellent hydrophilicity metallic conductivity. However, limited interlayer spacing tendency for self-stacking lead changes electron channels under external pressure, making it difficult exploit surface metal We propose a strategy rapid gas foaming construct tunable MXene aerogels. aerogels with rich network generate maximized facilitating effective utilization properties MXene; this forms self-healable pressure sensor sensing such as high sensitivity (1,799.5 kPa–1), fast response time (11 ms), good cycling stability (>25,000 cycles). This has applications human body detection, human–computer interaction, self-healing, remote monitoring, distribution identification. The channel design provides simple, efficient, scalable method effectively conduction 2D materials.

Язык: Английский

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A robotic sensory system with high spatiotemporal resolution for texture recognition

Nature Communications, Год журнала: 2023, Номер 14(1)

Опубликована: Ноя. 14, 2023

Abstract Humans can gently slide a finger on the surface of an object and identify it by capturing both static pressure high-frequency vibrations. Although modern robots integrated with flexible sensors precisely detect pressure, shear force, strain, they still perform insufficiently or require multi-sensors to respond physical stimuli during interaction. Here, we report real-time artificial sensory system for high-accuracy texture recognition based single iontronic slip-sensor, propose criterion—spatiotemporal resolution, corelate sensing performance capability. The sensor dynamic (0-400 Hz) high spatial resolution 15 μm in spacing 6 height, together 0.02 Hz at 400 Hz, enabling high-precision discrimination fine features. prosthetic fingertip 20 different commercial textiles 100.0% accuracy fixed sliding rate 98.9% random rates. is expected help achieve subtle tactile sensation robotics prosthetics, further be applied haptic-based virtual reality beyond.

Язык: Английский

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Advances in flexible sensors for intelligent perception system enhanced by artificial intelligence

InfoMat, Год журнала: 2023, Номер 5(5)

Опубликована: Март 23, 2023

Abstract Intelligent perception means that with the assistance of artificial intelligence (AI)‐motivated brain, flexible sensors achieve ability memory, learning, judgment, and reasoning about external information like human brain. Due to superiority machine learning (ML) algorithms in data processing intelligent recognition, systems possess match or even surpass systems. However, built‐in these need work on dynamic irregular surfaces, inevitably affecting precision fidelity acquired data. In recent years, strategy introducing developed functional materials innovative structures into has made some progress toward above challenges, blessing ML algorithms, accurate various scenarios have been achieved. Here, most representative for constructing are comprehensively reviewed, research based is further summarized, intersection two expected unlock new opportunities next‐stage AI development. image

Язык: Английский

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A flexible and ultrasensitive interfacial iontronic multisensory sensor with an array of unique “cup-shaped” microcolumns for detecting pressure and temperature

Nano Energy, Год журнала: 2022, Номер 105, С. 108012 - 108012

Опубликована: Ноя. 13, 2022

Язык: Английский

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A biomimetic laminated strategy enabled strain-interference free and durable flexible thermistor electronics

Nature Communications, Год журнала: 2022, Номер 13(1)

Опубликована: Окт. 29, 2022

Abstract The development of flexible thermistor epidermal electronics (FTEE) to satisfy high temperature resolution without strain induced signal distortion is great significance but still challenging. Inspired by the nacre microstructure capable restraining stress concentration, we exemplify a versatile MXene-based elastomer sensor (TES) platform that significantly alleviates interference biomimetic laminated strategy combining with in-plane dissipation and nacre-mimetic hierarchical architecture, delivering competitive advantages superior thermosensitivity (−1.32% °C −1 ), outstanding (~0.3 °C), unparalleled mechanical durability (20000 folding fatigue cycles), together considerable improvement in strain-tolerant thermosensation over commercial thermocouple exercise scenario. By combination theoretical model simulation, observation, superposed detection, authors further reveal underlying decoupling mechanism substantiate generality customizability strategy, possessing insightful fabricating FTEE for static dynamic detection.

Язык: Английский

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A Review on PVDF Nanofibers in Textiles for Flexible Piezoelectric Sensors

ACS Applied Nano Materials, Год журнала: 2023, Номер 6(3), С. 1522 - 1540

Опубликована: Янв. 20, 2023

Textiles are turning into a suitable next-generation sensing platform because of their good breathability, softness, and structural elasticity. Besides, research on self-powered piezoelectric sensors is hot topic in wearable applications; they can perform long-term monitoring. Therefore, this paper mainly reviews the development progress PVDF-based textiles flexible sensors. In paper, we first introduce principle effect classification materials; then summarize structure characteristics nanofiber mat-based, yarn-based, fabric-based approaches that employed to fabricate textile such as melt spinning, electrospinning, stretch forming processes, so on. At last, review applicability application electronic skin, human–computer interaction, healthcare, human movement monitoring demonstrate facing difficulties future directions

Язык: Английский

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