High‐accuracy dynamic gesture recognition: A universal and self‐adaptive deep‐learning‐assisted system leveraging high‐performance ionogels‐based strain sensors

SmartMat, Год журнала: 2024, Номер unknown

Опубликована: Янв. 15, 2024

Abstract Gesture recognition utilizing flexible strain sensors is a highly valuable technology widely applied in human–machine interfaces. However, achieving rapid detection of subtle motions and timely processing dynamic signals remain challenge for sensors. Here, resilient durable ionogels are developed by introducing micro‐scale incompatible phases macroscopic homogeneous polymeric network. The compatible network disperses conductive ionic liquid to form stretchable skeleton, while phase forms hydrogen bonds dissipate energy thus strengthening the ionogels. ionogels‐derived show sensitivity, fast response time (<10 ms), low limit (~50 μm), remarkable durability (>5000 cycles), allowing precise monitoring human motions. More importantly, self‐adaptive program empowered deep‐learning algorithms designed compensate sensors, creating comprehensive system capable gesture recognition. This can comprehensively analyze both temporal spatial features sensor data, enabling deeper understanding process underlying gestures. accurately classifies 10 hand gestures across five participants with impressive accuracy 93.66%. Moreover, it maintains robust performance without need further training even when different or subjects involved. technological breakthrough paves way intuitive seamless interaction between humans machines, presenting significant opportunities diverse applications, such as human–robot interaction, virtual reality control, assistive devices disabled individuals.

Язык: Английский

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Low‐Hysteresis and Tough Ionogels via Low‐Energy‐Dissipating Cross‐Linking

Advanced Materials, Год журнала: 2024, Номер 36(44)

Опубликована: Авг. 29, 2024

Low-hysteresis merits can help polymeric gel materials survive from consecutive loading cycles and promote life span in many burgeoning areas. However, it is a big challenge to design low-hysteresis tough materials, especially for ionogels. This be attributed the fact that higher viscosities of ionic liquids (ILs) would increase chain friction gels eventually dissipate large amounts energy under deformation. Herein, chemical ionogels proposed achieve characteristics both mechanical electric aspects via hierarchical aggregates formed by supramolecular self-assembly quadruple H-bonds soft IL-rich matrix. These self-assembled nanoaggregates not only greatly reinforce matrix enhance resilience, but also exhibit low-energy-dissipating features stress conditions, simultaneously benefiting properties. toughness subsequent anti-fatigue properties response external cyclic stimuli. More importantly, these are presented as model system elucidate underlying mechanism low hysteresis fatigue resistance. Based on findings, further demonstrated strategy universal.

Язык: Английский

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Encapsulating perovskite solar cells for long-term stability and prevention of lead toxicity

Applied Physics Reviews, Год журнала: 2024, Номер 11(2)

Опубликована: Апрель 1, 2024

Lead halide perovskite solar cells (PSCs) have achieved remarkable efficiencies comparable to those of their established silicon counterparts at a very fast pace. Moreover, solution-processable facile technologies offer low-cost, low-temperature, scalable fabrication these cells. Numerous studies focused on improving the performance, stability, and processing PSCs. However, potential lead toxicity poor long-term stability impede commercialization. In recent years, several developed novel encapsulants for PSCs that can simultaneously improve leakage. Although improvements been made both fronts, no solution date could achieve level leakage prevention result in market breakthrough. Here, we analyze PSC encapsulation techniques undertaken years. While most related either or toxicity, note be solved together with suitable encapsulant is impermeable moisture Pb2+ ions. addition, lack unified standard testing protocol has led under variety temperatures, humidities, environmental conditions. Therefore, urgency cannot overlooked.

Язык: Английский

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Light‐Based 3D Multi‐Material Printing of Micro‐Structured Bio‐Shaped, Conducting and Dry Adhesive Electrodes for Bioelectronics

Advanced Science, Год журнала: 2024, Номер 11(27)

Опубликована: Янв. 22, 2024

Abstract In this work, a new method of multi‐material printing in one‐go using commercially available 3D printer is presented. The approach simple and versatile, allowing the manufacturing layered or same layer. To best knowledge, it first time that printed Poly(3,4‐ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) micro‐patterns combining different materials are reported, overcoming mechanical stability issues. Moreover, conducting ink engineered to obtain stable in‐time while retaining sub‐100 µm resolution. Micro‐structured bio‐shaped protuberances designed as electrodes for electrophysiology. these microstructures combined with polymerizable deep eutectic solvents (polyDES) functional additives, gaining adhesion ionic conductivity. As result novel electrodes, low skin impedance values showed suitable performance electromyography recording on forearm. Finally, concluded use polyDES conferred over time, usability electrode 90 days after fabrication without losing its performance. All all, demonstrated very easy‐to‐make procedure allows PEDOT:PSS soft, hard, and/or flexible substrates, opening up paradigm multi‐functional field bioelectronics wearables.

Язык: Английский

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Multifunctional Polyoxometalates‐Based Ionohydrogels toward Flexible Electronics

Advanced Materials, Год журнала: 2024, Номер 36(25)

Опубликована: Март 14, 2024

Multifunctional flexible electronics present tremendous opportunities in the rapidly evolving digital age. One potential avenue to realize this goal is integration of polyoxometalates (POMs) and ionic liquid-based gels (ILGs), but challenge macrophase separation due poor compatibility, especially caused by repulsion between like-charged units, poses a significant hurdle. Herein, possibilities producing diverse homogenous POMs-containing ionohydrogels nanoconfining POMs liquids (ILs) within an elastomer-like polyzwitterionic hydrogel using simple one-step random copolymerization method, are expanded vastly. The incorporation polyzwitterions provides nanoconfined microenvironment effectively modulates excessive electrostatic interactions POMs/ILs/H

Язык: Английский

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Effect of gabapentin on solution surface properties and micellization behavior of betaine-based surfactant ionic liquids

Scientific Reports, Год журнала: 2025, Номер 15(1)

Опубликована: Янв. 2, 2025

Язык: Английский

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Spider‐Silk‐Inspired Tough, Self‐Healing, and Melt‐Spinnable Ionogels

Advanced Science, Год журнала: 2023, Номер 11(3)

Опубликована: Ноя. 23, 2023

Abstract As stretchable conductive materials, ionogels have gained increasing attention. However, it still remains crucial to integrate multiple functions including mechanically robust, room temperature self‐healing capacity, facile processing, and recyclability into an ionogel‐based device with high potential for applications such as soft robots, electronic skins, wearable electronics. Herein, inspired by the structure of spider silk, a multilevel hydrogen bonding strategy effectively produce multi‐functional is proposed combination desirable properties. The are synthesized based on N ‐isopropylacrylamide (NIPAM), N, ‐dimethylacrylamide (DMA), ionic liquids (ILs) 1‐ethyl‐3‐methylimidazolium bis(trifluoromethylsulfonyl)imide ([EMI][TFSI]). synergistic interactions between PNIPAM chains, PDMA ILs endow improved mechanical strength along fast ability at ambient conditions. Furthermore, show great capability continuous fabrication fibers using melt‐spinning process. ionogel exhibit spider‐silk‐like features hysteresis behavior, indicating their excellent energy dissipation performance. Moreover, interwoven network strain thermal sensing performance can accurately sense location objects. In addition, processability different shapes 3D printing. This work provides new design superior diverse applications.

Язык: Английский

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Highly stretchable, self-healable and wide temperature-tolerant deep eutectic solvent-based composite ionogels for skin-inspired strain sensors

Composites Communications, Год журнала: 2023, Номер 41, С. 101658 - 101658

Опубликована: Июнь 29, 2023

Язык: Английский

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Design and development of textile-based wearable sensors for real-time biomedical monitoring; a review

Journal of the Textile Institute, Год журнала: 2024, Номер unknown, С. 1 - 16

Опубликована: Фев. 20, 2024

The growing field of smart textiles has captivated researchers, focusing on advancing functionalities to enhance human well-being and elevate daily comfort. Wearable sensors, integral healthcare, hold immense promise for real-time biomedical monitoring, presenting a transformative potential disease management enhanced patient outcomes. Within this domain, textile-based wearable sensors have emerged as particularly promising technology, boasting advantages such comfort, flexibility, noninvasiveness. This article provides meticulous overview the design development monitoring. A comprehensive literature review explores existing sensor technologies, emphasizing limitations specific sensors. discussion encompasses considerations design, selection, integration into systems, delving evaluation various modalities, textile materials, fabrication techniques. Signal processing techniques, essential extracting pertinent information, data analysis methods monitoring are scrutinized. Biocompatibility, user acceptance factors conscientiously considered, alongside thorough discussions calibration procedures accuracy assessment ensure reliability measurements. further applications in encompassing vital signs activity tracking, detection. Human studies critically examined comprehend acceptance, informing improvements tailored needs. Lastly, discusses future research directions challenges, including durability, washability, scalability. aspires equip researchers practitioners with invaluable insights nuanced realm By fostering advancements field, aims facilitate seamless translation cutting-edge technology clinical practice.

Язык: Английский

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Ultrastretchable and Tough Poly(ionic liquid) Elastomer with Strain-Stiffening Ability Enabled by Strong/Weak Ionic Interactions

Macromolecules, Год журнала: 2024, Номер 57(5), С. 2339 - 2350

Опубликована: Фев. 28, 2024

Polymer ionic conductors have shown great promise as iontronic sensors for flexible wearable devices and intelligent machines. A series of exquisitely designed hydrogels, ionogels, elastomers good mechanical properties, such super stretchability high elasticity. However, most gels tend to exhibit softening or linear mechanoresponsive behavior when subjected stress, which is completely different from the strain-stiffening biological tissues. Therefore, designing polymer with properties ability remains a challenge, critical in improving reliability durability sensing. Here, we propose strong/weak interaction strategy develop poly(ionic liquid) (PILEs) through copolymerization imidazolium liquid monomers acrylate monomers. The design allows weak interactions impart softness network, while strong stiffen network during stretching. resulting transparent PILE possesses ultrastretchability, immense strain stiffening, elasticity, toughness, puncture resistance. also shows antibacterial adhesion due high-content charge groups network. These combined make an excellent candidate sensors, stability sensitivity temperature strain, demonstrating potential human–machine interfaces.

Язык: Английский

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