Artificial Intelligence Meets Flexible Sensors: Emerging Smart Flexible Sensing Systems Driven by Machine Learning and Artificial Synapses

Nano-Micro Letters, Год журнала: 2023, Номер 16(1)

Опубликована: Ноя. 13, 2023

The recent wave of the artificial intelligence (AI) revolution has aroused unprecedented interest in intelligentialize human society. As an essential component that bridges physical world and digital signals, flexible sensors are evolving from a single sensing element to smarter system, which is capable highly efficient acquisition, analysis, even perception vast, multifaceted data. While challenging manual perspective, development intelligent been remarkably facilitated owing rapid advances brain-inspired AI innovations both algorithm (machine learning) framework (artificial synapses) level. This review presents progress emerging AI-driven, systems. basic concept machine learning synapses introduced. new enabling features induced by fusion comprehensively reviewed, significantly applications such as sensory systems, soft/humanoid robotics, activity monitoring. two most profound twenty-first century, deep incorporation technology holds tremendous potential for creating beings.

Язык: Английский

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Aloe Inspired Special Structure Hydrogel Pressure Sensor for Real‐Time Human‐Computer Interaction and Muscle Rehabilitation System

Advanced Functional Materials, Год журнала: 2023, Номер 33(50)

Опубликована: Сен. 3, 2023

Abstract In recent years, significant progress has been made in the research and development of conventional hydrogel sensors. However, hydrogels with special structures, achieved through specific designs or fabrication strategies, remains relatively scarce. Inspired by aloe, a specially structured (named Skin‐Polyvinyl alcohol‐Polyaniline‐AgNWs, S‐PPA) is successfully prepared skin. Innovatively utilizing hydrogen bonding interaction between ions water molecules, surface treated to create protective The S‐PPA skin demonstrates strong resistance damage (with tensile strength 5 MPa, >11 times higher compared without skin) exhibits dual conductivity (0.8 S m −1 for inner 0.33 outer skin). addition, also possesses retention capabilities, antibacterial properties (89.4% inhibition rate against Staphylococcus aureus ( S. )), minimal corrosion metal electrodes. Based on combined wireless Bluetooth technology Python programming, intelligent applications are developed such as multi‐gradient control finger muscle condition evaluation, achieving real‐time human‐ computer (HCI). pressure‐sensitive proposed this study shows great potential fields medical rehabilitation, artificial intelligence, Internet Things.

Язык: Английский

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A Breathable, Stretchable, and Self‐Calibrated Multimodal Electronic Skin Based on Hydrogel Microstructures for Wireless Wearables

Advanced Functional Materials, Год журнала: 2024, Номер 34(32)

Опубликована: Апрель 12, 2024

Abstract Biomimetic electronic skins (e‐skins) are widely used in wearables, smart prosthesis and soft robotics. However, multimodal e‐skins, especially those based on hydrogels, face multiple challenges for practical applications, involving multi‐sensing signal mutual interference, low breathability stretchability. Here, a breathable stretchable e‐skin with multilayer film microstructure is developed to achieve self‐calibrated sensing of any two three stimuli: strain, temperature, humidity, minimal crosstalk. Hydrogel fibers different shapes designed strain temperature modules, the hydrogel as humidity module. The exhibits impressive performance, including detection limit (0.03%), linearity (R 2 = 0.990), high‐temperature sensitivity (1.77%/°C), wide range (33–98% RH). Interestingly, due directional anisotropy shaped fibers, realizes directions. By introducing porous elastomer encapsulation membranes, wearing comfort attained, while high stretchability (100% strain) maintained. Furthermore, personalized human‐machine interaction system created by integrating wireless circuit realize real‐time gesture recognition, physiological signals monitoring, prosthesis.

Язык: Английский

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A Laminated Gravity‐Driven Liquid Metal‐Doped Hydrogel of Unparalleled Toughness and Conductivity

Advanced Functional Materials, Год журнала: 2023, Номер 34(31)

Опубликована: Окт. 6, 2023

Abstract Conductive hydrogels have been promising candidates for wearable and flexible electronics due to their high flexibility biocompatibility. However, the previously reported with conductivity over 1000 S m −1 usually poor mechanical properties including low tensile stress (<5 MPa) toughness (<2 MJ −3 ). Here, a liquid metal‐doped polyvinyl alcohol (PVA‐LM) hydrogel is presented, which simultaneously combines ultra‐high (maximum of 217 895 ) excellent properties, (15.44 MPa), large strain (704%), (43.02 fatigue resistance. Such extremely afforded by self‐sintering behavior LM at bottom surface that enables formation conductive networks. The polymer crystalline regions polymer‐tannic acid multiple hydrogen bonds are responsible impressive hydrogels. Particularly, electric filler could be recycled in robust dissociation dynamic interactions. Most importantly, electrodes capacitive sensors developed utilizing PVA‐LM hydrogel. These devices enable accurate monitoring bioelectrical signals human motions, highlighting immense potential realm soft technology.

Язык: Английский

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Anti-freeze hydrogel-based sensors for intelligent wearable human-machine interaction

Chemical Engineering Journal, Год журнала: 2024, Номер 481, С. 148526 - 148526

Опубликована: Янв. 7, 2024

Язык: Английский

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Biomedical applications of supramolecular hydrogels with enhanced mechanical properties

Advances in Colloid and Interface Science, Год журнала: 2023, Номер 321, С. 103000 - 103000

Опубликована: Сен. 20, 2023

Язык: Английский

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A Semi‐Interpenetrating Poly(Ionic Liquid) Network‐Driven Low Hysteresis and Transparent Hydrogel as a Self‐Powered Multifunctional Sensor

Advanced Functional Materials, Год журнала: 2024, Номер 34(32)

Опубликована: Май 6, 2024

Abstract Conductive hydrogels are gaining significant attention as promising candidates for the fabrication materials flexible electronics. Nevertheless, improving tensile properties, hysteresis, durability, adhesion, and electrochemical properties of these remains challenging. This work reports development a novel semi‐interpenetrating network poly(ionic liquid) hydrogel named PATV, via in situ polymerization acrylamide, N ‐[Tris(hydroxymethyl)methyl] 1‐vinyl‐3‐butylimidazolium tetrafluoroborate. The density functional theory calculations reveal that acts physical cross–linking points to construct hydrogen‐bond networks. Furthermore, networks dissipate energy efficiently quickly, thus stress concentration hysteresis avoided. prepared has low (9%), high (900%), fast response (180 ms), sensitivity (gauge factor = 10.4, pressure 0.14 kPa −1 ), wide sensing range (tensile range: 1–600%, compression 0.1–20 kPa). A multifunctional sensor designed based on enables real‐time, rapid, stable response‐ability detection human movement, facial expression recognition, pronunciation, pulse, handwriting, Morse code encryption. assembled triboelectric nanogenerator displays an excellent harvesting capability, highlighting its potential application self‐powered wearable electronic devices.

Язык: Английский

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Humidity Adaptive Antifreeze Hydrogel Sensor for Intelligent Control and Human‐Computer Interaction

Small, Год журнала: 2024, Номер 20(24)

Опубликована: Янв. 2, 2024

Abstract Conductive hydrogels have emerged as ideal candidate materials for strain sensors due to their signal transduction capability and tissue‐like flexibility, resembling human tissues. However, the presence of water molecules, can experience dehydration low‐temperature freezing, which greatly limits application scope sensors. In this study, an ionic co‐hybrid hydrogel called PBLL is proposed, utilizes amphoteric ion betaine hydrochloride (BH) in conjunction with hydrated lithium chloride (LiCl) thereby achieving function humidity adaptive. retains at low (<50%) absorbs from air high (>50%) over 17 days testing. Remarkably, also exhibits strong anti‐freezing properties (−80 °C), conductivity (8.18 S m −1 room temperature, 1.9 −80 gauge factor (GF approaching 5.1). Additionally, exhibit inhibitory effects against Escherichia coli (E. coli) Staphylococcus aureus (S. aureus), well biocompatibility. By synergistically integrating wireless transmission Internet Things (IoT) technologies, study has accomplished real‐time human‐computer interaction systems sports training rehabilitation evaluation. significant potential fields medical rehabilitation, artificial intelligence (AI), (IoT).

Язык: Английский

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AI energized hydrogel design, optimization and application in biomedicine

Materials Today Bio, Год журнала: 2024, Номер 25, С. 101014 - 101014

Опубликована: Фев. 29, 2024

Traditional hydrogel design and optimization methods usually rely on repeated experiments, which is time-consuming expensive, resulting in a slow-moving of advanced development. With the rapid development artificial intelligence (AI) technology increasing material data, AI-energized hydrogels for biomedical applications has emerged as revolutionary breakthrough materials science. This review begins by outlining history AI potential advantages using hydrogels, such prediction properties, multi-attribute optimization, high-throughput screening, automated discovery, optimizing experimental design, etc. Then, we focus various supported biomedicine, including drug delivery, bio-inks manufacturing, tissue repair, biosensors, so to provide clear comprehensive understanding researchers this field. Finally, discuss future directions prospects, new perspective research novel applications.

Язык: Английский

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Polyvinyl Alcohol (PVA)-Based Hydrogels: Recent Progress in Fabrication, Properties, and Multifunctional Applications

Polymers, Год журнала: 2024, Номер 16(19), С. 2755 - 2755

Опубликована: Сен. 29, 2024

Polyvinyl alcohol (PVA)-based hydrogels have attracted significant attention due to their excellent biocompatibility, tunable mechanical properties, and ability form stable three-dimensional networks. This comprehensive review explores the recent advancements in PVA-based hydrogels, focusing on unique fabrication strategies, multifunctional applications. Firstly, it discusses various facile synthesis techniques, including freeze/thaw cycles, chemical cross-linking, enhancement which led enhanced strength, elasticity, responsiveness external stimuli. These improvements expanded applicability of critical areas such as biomedical, environmental treatment, flexible electronics, civil engineering, well other emerging Additionally, integration smart functionalities, self-healing capabilities multi-responsiveness, is also examined. Despite progress, challenges remain, optimizing stability under varying conditions addressing potential toxicity cross-linkers. The concludes by outlining future perspectives, emphasizing fields like regenerative medicine, sustainability, advanced manufacturing. It underscores importance interdisciplinary collaboration realizing full these versatile materials address pressing societal challenges.

Язык: Английский

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