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

Nano-Micro Letters, Journal Year: 2023, Volume and Issue: 15(1)

Published: April 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%).

Language: Английский

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Flexible Energy Storage Devices to Power the Future

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(4)

Published: Aug. 6, 2023

Abstract The field of flexible electronics is a crucial driver technological advancement, with strong connection to human life and unique role in various areas such as wearable devices healthcare. Consequently, there an urgent demand for energy storage (FESDs) cater the needs forms products. FESDs can be classified into three categories based on spatial dimension, all which share features excellent electrochemical performance, reliable safety, superb flexibility. In this review, application scenarios are introduced main representative applied disparate fields summarized first. More specifically, it focuses types matched from both structural material aspects. Finally, challenges that hinder practical views current barriers presented.

Language: Английский

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Deep-Learning Enabled Active Biomimetic Multifunctional Hydrogel Electronic Skin

ACS Nano, Journal Year: 2023, Volume and Issue: 17(16), P. 16160 - 16173

Published: July 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.

Language: Английский

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Flexible breathable photothermal-therapy epidermic sensor with MXene for ultrasensitive wearable human-machine interaction

Nano Energy, Journal Year: 2023, Volume and Issue: 108, P. 108201 - 108201

Published: Jan. 11, 2023

Language: Английский

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

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(18)

Published: Feb. 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

Language: Английский

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Incorporating Wireless Strategies to Wearable Devices Enabled by a Photocurable Hydrogel for Monitoring Pressure Information

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(29)

Published: March 31, 2023

Advances in emerging technologies for wireless collection and the timely analysis of various information captured by wearable devices are growing interest. Herein, a crosslinked ionic hydrogel prepared facile photocuring process is proposed, which allows to be further incorporated into two integrated systems pressure monitoring applications. The device exhibits simplified structure effectively sharing functional layers, rather than conventional separate combinations, offering salient performance iontronic sensing electrochromic properties simultaneously quantify visualize pressure. developed smart patch system demonstrated monitor physiological signals real-time utilizing user interface remote portable equipment with Bluetooth protocol on-site displays. Moreover, passive based on magnetic coupling effect designed, can operate free from battery acquire multiple information. It envisioned that strategies would hold enormous potential flexible electronics, versatile platforms, on-body networks.

Language: Английский

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Multifunctional, Ultra‐Tough Organohydrogel E‐Skin Reinforced by Hierarchical Goatskin Fibers Skeleton for Energy Harvesting and Self‐Powered Monitoring

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(42)

Published: June 24, 2023

Abstract E‐skins based on conductive hydrogels are regarded as ideal candidates for sensing application. However, limited by the constructed materials and strategies, current have poor mechanical properties, single function, unsatisfactory conductivity, which seriously hinder their development Herein, natural goatskin with hierarchical 3D network structure weaved collagen fibers is used substrate material construction of ultra‐tough hydrogel through a “top‐down” strategy, in acrylic acid monomer first vacuum‐impregnated into interstices skeleton then polymerized situ to produce skin‐based unique wrapping structure. Based hydrogel, load‐carrying capacity, after loaded new multifunctional nanoscale‐conductive medium nanosilver particles (AgNPs) 1,3‐propanediol, goatskin‐derived organohydrogel S@HCP excellent self‐adhesion, transparency, ultraviolet shielding, antibacterial, biocompatibility, environmental stability, conductivity. Notably, stretchable S‐TENG assembled using can be perfectly suited real‐life applications including biomechanical energy harvesting, self‐powered tactile‐sensing, motion monitoring. It believed that, combining animal skin different functional materials, it possible reuse skin, “dead skin,” provides platform developing flexible e‐skin.

Language: Английский

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

ACS Nano, Journal Year: 2023, Volume and Issue: 17(2), P. 1393 - 1402

Published: Jan. 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.

Language: Английский

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Bioinspired Self‐healing Soft Electronics

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(17)

Published: Feb. 7, 2023

Abstract Inspired by nature, various self‐healing materials that can recover their physical properties after external damage have been developed. Recently, widely used in electronic devices for improving durability and protecting the from failure during operation. Moreover, integrate many other intriguing of biological systems, such as stretchability, mechanical toughness, adhesion, structural coloration, providing additional fascinating experiences. All these inspirations attracted extensive research on bioinspired soft electronics. This review presents a detailed discussion Firstly, two main healing mechanisms are introduced. Then, four categories electronics, including insulators, semiconductors, conductors, ionic reviewed, functions, working principles, applications summarized. Finally, human‐inspired animal‐inspired well applications, organic field‐effect transistors (OFETs), pressure sensors, strain chemical triboelectric nanogenerators (TENGs), actuators, cutting‐edge promising field is believed to stimulate more excellent cross‐discipline works material science, flexible novel accelerating development human motion monitoring, environmental sensing, information transmission, etc.

Language: Английский

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A robotic sensory system with high spatiotemporal resolution for texture recognition

Nature Communications, Journal Year: 2023, Volume and Issue: 14(1)

Published: Nov. 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.

Language: Английский

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