Bioinspired All-Fibrous Directional Moisture-Wicking Electronic Skins for Biomechanical Energy Harvesting and All-Range Health Sensing

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

Published: March 2, 2023

Electronic skins can monitor minute physiological signal variations in the human and represent body’s state, showing an emerging trend for alternative medical diagnostics human–machine interfaces. In this study, we designed a bioinspired directional moisture-wicking electronic skin (DMWES) based on construction of heterogeneous fibrous membranes conductive MXene/CNTs electrospraying layer. Unidirectional moisture transfer was successfully realized by surface energy gradient push–pull effect via design distinct hydrophobic-hydrophilic difference, which spontaneously absorb sweat from skin. The DMWES membrane showed excellent comprehensive pressure sensing performance, high sensitivity (maximum 548.09 kPa−1), wide linear range, rapid response recovery time. addition, single-electrode triboelectric nanogenerator deliver areal power density 21.6 µW m−2 good cycling stability harvesting. Moreover, superior performance enabled all-range healthcare sensing, including accurate pulse monitoring, voice recognition, gait recognition. This work will help to boost development next-generation breathable applications AI, interaction, soft robots.

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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Processes of Electrospun Polyvinylidene Fluoride-Based Nanofibers, Their Piezoelectric Properties, and Several Fantastic Applications

Polymers, Journal Year: 2022, Volume and Issue: 14(20), P. 4311 - 4311

Published: Oct. 13, 2022

Since the third scientific and technological revolution, electronic information technology has developed rapidly, piezoelectric materials that can convert mechanical energy into electrical have become a research hotspot. Among them, polymers are widely used in various fields such as water treatment, biomedicine, flexible sensors due to their good flexibility weak toxicity. However, compared with ceramic materials, properties of poor, so it is very important improve polymers. Electrospinning by adjusting electrospinning parameters control piezoelectrically active phase transition In addition, prepared nanofibrous membrane also substrate for supporting functional particles, which effectively doping particles. This paper reviews electrospun polymer membranes, especially polyvinylidene fluoride (PVDF)-based membranes (NFs). Additionally, this introduces methods increasing from perspective structure species. Finally, applications NFs biology, energy, photocatalysis discussed, future directions development prospected.

Language: Английский

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Electrospun fiber-based flexible electronics: Fiber fabrication, device platform, functionality integration and applications

Progress in Materials Science, Journal Year: 2023, Volume and Issue: 137, P. 101139 - 101139

Published: May 5, 2023

Language: Английский

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Self‐Healing Fibrous Membranes

Angewandte Chemie International Edition, Journal Year: 2022, Volume and Issue: 61(41)

Published: July 21, 2022

Abstract Inspired by the self‐healing function of living organisms, materials have been developed in recent decades to very high standards. As a new direction, fibrous membranes (SFMs) exhibit both configuration porous structure and capability within one material. Different from nonporous materials, it is more challenging introduce properties membrane owing complex healing mechanism microstructure SFMs. This Minireview focuses on mechanisms, design principles, preparation strategies The characteristics SFM performance are introduced detail, insights perspectives mechanisms put forward. Furthermore, remaining challenges future developments SFMs presented, where ultimate goal highly efficient superstable membranes.

Language: Английский

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Recent Progress of Wearable Piezoelectric Pressure Sensors Based on Nanofibers, Yarns, and Their Fabrics via Electrospinning

Advanced Materials Technologies, Journal Year: 2022, Volume and Issue: 8(5)

Published: Oct. 30, 2022

Abstract Highly sensitive flexible pressure sensors are extensively investigated for various applications, such as electronic skin, human physiological monitoring, and artificial intelligence. However, traditional fabrication technologies hard to realize the large‐area mass production of wearable sensing devices. Current trend miniaturization, systematization, multifunction has raised problems total energy consumption, frequent charging, reduced usage time. These issues have hindered progress electronics. In light nanomaterial design, production, facile manufacturing, electrospun piezoelectric offer best properties self‐powering, breathability, stretchability, flexibility, providing ideal interfacing platforms smart wearables. Tremendous advances been achieved recently in high sensitivity, output, composite optimization, nano‐/microstructure design nonwoven nanofiber membranes. Nevertheless, how fulfill real textile‐level integration consideration biocompatibility, integration, wearability, geometrical multifunction, systematization remains a big challenge. Therefore, recent from nanofibers their fabrics is comprehensively summarized. Plentiful strategies, structure designs, underlying mechanisms that boost discussed. Lastly, challenges possible solutions future electrospinning‐based systems proposed.

Language: Английский

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The Rising of Fiber Constructed Piezo/Triboelectric Nanogenerators: From Material Selections, Fabrication Techniques to Emerging Applications

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(44)

Published: July 7, 2023

Abstract Piezo/triboelectric nanogenerators (PTNGs) have become the research frontier in many cutting‐edge applications, which open up promising possibilities for broad prospects. Fiber materials are ideal candidate constructing high‐performance PTNGs owing to compelling features of lightweight, programmable structure, favorable softness, and brilliant breathability. To this end, working mechanisms, material selections, structural designs fabrication methods fiber constructed comprehensively presented. An in‐depth analysis emerging applications ranging from intelligent clothing, smart home, personalized medicine artificial intelligence is thoughtfully demonstrated. Furthermore, current problems potential challenges that hinder their large‐scale commercial systematically discussed, laying emphasis on future development direction PTNGs. It expected review will supply audience with some universal strategies fresh ideas conduct deep toward better performance.

Language: Английский

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Biocompatible and breathable all-fiber-based piezoresistive sensor with high sensitivity for human physiological movements monitoring

Chemical Engineering Journal, Journal Year: 2022, Volume and Issue: 446, P. 137268 - 137268

Published: May 30, 2022

Language: Английский

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Smart fibers and textiles for emerging clothe-based wearable electronics: materials, fabrications and applications

Journal of Materials Chemistry A, Journal Year: 2023, Volume and Issue: 11(33), P. 17336 - 17372

Published: Jan. 1, 2023

The emerging smart fibers and textiles have been regarded as ideal building blocks to weave flexible wearable electronics, which hold great promise in the upcoming artificial intelligence (AI) Internet of Things (IoT) era.

Language: Английский

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All‐Organic Smart Textile Sensor for Deep‐Learning‐Assisted Multimodal Sensing

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(30)

Published: April 16, 2023

Abstract Smart textile for sensor is identified as a superior platform with greatly improved convenience and comfort wearable bioelectronics. However, most reported textile‐based sensors cannot fully demonstrate the inherent advantages of textiles, such comfortability, breathability, biocompatibility, environmental friendliness, mainly due to intrinsic limitation non‐textile or inorganic components. Here, an all‐textile, all‐organic, washable, breathable discriminable pressure, proximity, temperature sensing function first reported. Multiple functions outstanding washability are demonstrated. The all‐textile can also be seamlessly integrated into diverse types fabrics realize wide‐range human activities noncontact stimuli without sacrificing biocompatibility comfortability. Additionally, by combining deep‐learning technique, system established recognize object shape, contactless trajectory, even temperature. These results open new avenue designing low‐cost, comfortable, biocompatible green electronics, providing meaningful guideline in intelligent textiles.

Language: Английский

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