Ultrastretchable, Self-Healing Conductive Hydrogel-Based Triboelectric Nanogenerators for Human–Computer Interaction

ACS Applied Materials & Interfaces, Journal Year: 2023, Volume and Issue: 15(4), P. 5128 - 5138

Published: Jan. 19, 2023

The rapid development of wearable electronic devices and virtual reality technology has revived interest in flexible sensing control devices. Here, we report an ionic hydrogel (PTSM) prepared from polypropylene amine (PAM), tannic acid (TA), sodium alginate (SA), MXene. Based on the multiple weak H-bonds, this exhibits excellent stretchability (strain >4600%), adhesion, self-healing. introduction MXene nanosheets endows sensor with a high gauge factor (GF) 6.6. Meanwhile, it also enables triboelectric nanogenerators (PTSM-TENGs) fabricated silicone rubber-encapsulated hydrogels to have energy harvesting efficiency, instantaneous output power density 54.24 mW/m2. We build glove-based human-computer interaction (HMI) system using PTSM-TENGs. multidimensional signal features PTSM-TENG are extracted analyzed by HMI system, functions gesture visualization robot hand realized. In addition, signals can be used for object recognition help machine learning techniques. glove based achieves classification five objects through contact, accuracy rate 98.7%. Therefore, strain sensors broad application prospects man-machine interface, intelligent systems, auxiliary other fields due their stretchable self-healing performance.

Language: Английский

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Environment‐tolerant ionic hydrogel–elastomer hybrids with robust interfaces, high transparence, and biocompatibility for a mechanical–thermal multimode sensor

InfoMat, Journal Year: 2023, Volume and Issue: 5(4)

Published: Feb. 26, 2023

Abstract The human skin, an important sensory organ, responds sensitively to external stimuli under various harsh conditions. However, the simultaneous achievement of mechanical/thermal sensitivity and extreme environmental tolerance remains enormous challenge for skin‐like hydrogel‐based sensors. In this study, a novel skin‐inspired hydrogel–elastomer hybrid with sandwich structure strong interfacial bonding mechanical–thermal multimode sensing applications is developed. An inner‐layered ionic hydrogel semi‐interpenetrating network prepared using sodium carboxymethyl cellulose (CMC) as nanofiller, lithium chloride (LiCl) transport conductor, polyacrylamide (PAM) polymer matrix. outer‐layered polydimethylsiloxane (PDMS) elastomers fully encapsulating endow hybrids improved mechanical properties, intrinsic waterproofness, long‐term water retention (>98%). silane modification hydrogels imparts enhanced strength integrity. exhibit high transmittance (~91.2%), fatigue resistance, biocompatibility. multifunctional sensors assembled from realize real‐time temperature (temperature coefficient approximately −1.1% °C −1 ) responsiveness, wide‐range strain capability (gauge factor, ~3.8) over wide range (from −20°C 60°C), underwater information transmission. Notably, dual‐parameter sensor can recognize superimposed signals strain. designed prototype arrays detect magnitude spatial distribution forces temperatures. comprehensive performance via facile method superior that most similar previously reported. Finally, study develops new material platform monitoring health in environments. image

Language: Английский

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Ultrastretchable Ionogel with Extreme Environmental Resilience through Controlled Hydration Interactions

Advanced Functional Materials, Journal Year: 2022, Volume and Issue: 33(2)

Published: Nov. 3, 2022

Abstract Ionic conductive gels are widely sought after for applications that require reliable ionic conduction and mechanical performance under extreme conditions, which remains a grand challenge. To address this limitation, water‐induced hydration interactions deliberately controlled within the liquid (IL)‐based (ionogels) to achieve all‐round performance. Specifically, competitive between IL, water cellulose nanofibrils (CNF) balanced preserve nanoscale morphology of CNF while avoiding its dissolution. As result, both conductivity resultant ionogel synergistically enhanced. For instance, an ultra stretchable (up 10250 ± 412% stretchability) with high toughness (21.8 0.9 MJ m −3 ) (0.70 0.06 S −1 is achieved. Furthermore, multimodal sensing functions (strain, compression, temperature, humidity) realized by assembling as skin‐like membrane. Due low volatility IL strong interaction water, maintains excellent at either ultra‐low temperature (−45 °C), (75 °C) or humidity environment (RH < 15%), demonstrating superb anti‐freezing anti‐drying Overall, simple yet versatile strategy introduced leads environmentally resilient ionogels meet requirements next‐generation electroactive devices.

Language: Английский

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Liquid‐Free, Anti‐Freezing, Solvent‐Resistant, Cellulose‐Derived Ionic Conductive Elastomer for Stretchable Wearable Electronics and Triboelectric Nanogenerators

Advanced Functional Materials, Journal Year: 2022, Volume and Issue: 32(46)

Published: Sept. 7, 2022

Abstract The development of flexible conductive elastomers integrating renewable feedstock, splendid mechanical property, and excellent weather resistance is major interest challenge. Here, a novel strategy reported to construct the liquid‐free cellulose‐derived ionic elastomer that successfully applied in wearable sensor triboelectric nanogenerators (TENG). In this strategy, with physical chemical dual‐crosslinking network prepared via situ polymerization polymerizable deep eutectic solvent. construction improves strength toughness more than 2 times, cellulose contributes forming dense hydrogen bond crosslinking can improve recyclability, anti‐freezing, solvent‐resistance performance. Benefiting from these features, sensors TENG for monitoring human motion, harvesting energy convert into stable electrical outputs light LEDs, charge capacitor, power electronic watch. maintains reliable sensing performance even after recycling, soaking organic solvent, or at low/high temperature. This study paves promising fabricating sustainable multifunction electronics are suitable harsh environments.

Language: Английский

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Cellulose-Based Ionic Conductor: An Emerging Material toward Sustainable Devices

Chemical Reviews, Journal Year: 2023, Volume and Issue: 123(15), P. 9204 - 9264

Published: July 7, 2023

Ionic conductors (ICs) find widespread applications across different fields, such as smart electronic, ionotronic, sensor, biomedical, and energy harvesting/storage devices, largely determine the function performance of these devices. In pursuit developing ICs required for better performing sustainable cellulose appears an attractive promising building block due to its high abundance, renewability, striking mechanical strength, other functional features. this review, we provide a comprehensive summary regarding fabricated from cellulose-derived materials in terms fundamental structural features cellulose, design fabrication techniques engineering, main properties characterization, diverse applications. Next, potential cellulose-based relieve increasing concern about electronic waste within frame circularity environmental sustainability future directions be explored advancing field are discussed. Overall, hope review can unique perspectives on application advanced thereby encourage utilization cellulosic toward

Language: Английский

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Tough Liquid‐Free Ionic Conductive Elastomers with Robust Adhesion and Self‐Healing Properties for Ionotronic Devices

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 34(4)

Published: Oct. 20, 2023

Abstract Polymerizable deep eutectic solvent (PDES) as a newly emerging type of liquid‐free ionic conductive elastomer is considered to be the most attractive candidate for next generation ionotronic devices. However, it remains huge challenge integrate high conductivity, excellent mechanical properties, good self‐healing capacity, and robust adhesion into single material that satisfies stringent demand devices in various scenarios. Herein, constructed by incorporating tannic acid‐encapsulated cellulose nanocrystals (TA@CNC) multifunctional hydrogen bond donors (HBDs) along with poly(acrylic acid) choline chloride (hydrogen acceptors, HBAs) form dynamic cross‐linking network through multiple bonds. The presence rigid crystalline regions sufficient interaction sites on TA@CNC endow resultant elastomers (ACTC) superior properties (≈496 kPa, 2400%), (≈68.6 kPa), property. Benefiting from above integrated features, wearable sensors harnessing ACTC resistance sensing module provide unaltered performance under off‐axial deformation (twisting prick). Additionally, capacitance pressure sensor stability force distribution developed, opening up new avenue development

Language: Английский

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Highly conductive and anti-freezing cellulose hydrogel for flexible sensors

International Journal of Biological Macromolecules, Journal Year: 2023, Volume and Issue: 230, P. 123425 - 123425

Published: Jan. 25, 2023

Language: Английский

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Tough and Stretchable Phenolic‐Reinforced Double Network Deep Eutectic Solvent gels for Multifunctional Sensors with Environmental Adaptability

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(36)

Published: May 17, 2023

Abstract Conductive gels are perfect for various sensor applications due to their inherent stretchability, flexibility, and electrical conductivity. However, poor environmental adaptability low fracture toughness restrict potential applications. In this study, resorcinol‐formaldehyde resin (RF) is used the first time as a rigid network compounded with flexible polyacrylic acid (PAA) successfully prepare double (DN) deep eutectic solvent gel (RF/PAA DN gel). The has high stress strength (1.04 MPa), compressive (10.63 (1.07 MJ m −3 ). addition of RF significantly improves mechanical properties gives RF/PAA certain photothermal effects, swelling resistance, flame retardancy, broadening scope use application gel. Importantly, multifunctional sensor, it can combine deformation sensing, temperature optical humidity underwater sensing into one, wide range stimuli responses excellent properties. Excellent suitability also allows its in temperatures (−20−90 °C), (55%−90% RH), underwater, fire conditions. work provides new ideas choosing networks novel strategy developing sensors performance complex environments.

Language: Английский

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Skin‐Like Transparent, High Resilience, Low Hysteresis, Fatigue‐Resistant Cellulose‐Based Eutectogel for Self‐Powered E‐Skin and Human–Machine Interaction

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 34(13)

Published: Dec. 14, 2023

Abstract Artificial electronic skin (E‐skin), a class of promising materials mimicking the physical‐chemical and sensory performance human skin, has gained extensive interest in field health‐monitoring robotic skins. However, developing E‐skin simultaneously achieving high resilience, hysteresis‐free, absent external power is always formidable challenge. Herein, liquid‐free eutectic gel‐based self‐powered with fatigue resistance, conductivity prepared by introducing hydroxypropyl cellulose (HPC) into metal salt‐based deep solvents (MDES). The unique structural design cellulose‐anchored permanent entangled poly(acrylic acid) (PAA) chain, combination rapid broken/reconstruction dense dynamic sacrificial bonds, realizes fabrication high‐elastic negligible hysteresis. This further demonstrates practical application cellulose‐based eutectogel transmittance (92%), (36.6 mS m −1 ), resilience (98.1%), excellent environment stability robust triboelectric nanogenerator for energy harvesting health‐caring human‐machine interaction.

Language: Английский

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Initiatorless Solar Photopolymerization of Versatile and Sustainable Eutectogels as Multi‐Response and Self‐Powered Sensors for Human–Computer Interface

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(51)

Published: Sept. 8, 2023

Abstract Eutectogels are emerging as an appealing soft conductor for self‐powered sensing and the next generation of flexible human–computer interactive devices owing to their inherent mechanical elasticity high ionic conductivity. However, it still remains a challenge simultaneously achieve multi‐functional multi‐response integrations through facile sustainable approach. Herein, self‐healing, environment tolerant, intrinsically conductive, recyclable eutectogel with multiple responses is developed via one‐step solar‐initiated polymerization deep eutectic solvents (DESs) liquids (ILs). Abundant hydrogen bonds ion‐dipole interactions impart eutectogels strength (8.8 MPa), ultra‐stretchability (>1100%), strong self‐adhesion (≈12 recyclability, autonomously self‐healing ability. Furthermore, conductive versatile sensations on strain, temperature, humidity can serve wearable sensors wireless motion recognition interaction control. More importantly, eutectogel‐assembled single‐electrode triboelectric nanogenerator (TENG) exhibits extreme environment‐tolerant fast self‐healable properties that contribute maintaining excellent stable electrical outputs in wide work temperature range (approximately −40–60 °C), which appear be promising electronics environmental adaptability.

Language: Английский

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