Breathable Electronic Skins for Daily Physiological Signal Monitoring

Nano-Micro Letters, Journal Year: 2022, Volume and Issue: 14(1)

Published: Aug. 9, 2022

Abstract With the aging of society and increase in people’s concern for personal health, long-term physiological signal monitoring daily life is demand. In recent years, electronic skin (e-skin) health applications has achieved rapid development due to its advantages high-quality signals suitability system integrations. Among them, breathable e-skin developed rapidly years because it adapts high-comfort wear requirements life. this review, achievements e-skins are systematically introduced discussed. By dividing them into electrodes, sensors, systems, we sort out their design ideas, manufacturing processes, performances, show addition, directions challenges discussed prospected.

Language: Английский

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Breathable and Waterproof Electronic Skin with Three-Dimensional Architecture for Pressure and Strain Sensing in Nonoverlapping Mode

ACS Nano, Journal Year: 2022, Volume and Issue: 16(8), P. 12620 - 12634

Published: July 20, 2022

Wearable sensors have recently attracted extensive interest not only in the field of healthcare monitoring but also for convenient and intelligent human–machine interactions. However, challenges such as wearable comfort, multiple applicable conditions, differentiation mechanical stimuli are yet to be fully addressed. Herein, we developed a breathable waterproof electronic skin (E-skin) that can perceive pressure/strain with nonoverlapping signals. The synergistic effect from magnetic attraction nanoscaled aggregation renders E-skin microscaled pores breathability three-dimensional microcilia superhydrophobicity. Upon applied pressure, bending conductive enables sufficient contacts resistance decrease, while stretching causes increased due separation materials. optimized exhibits high gauge factor 7.747 small strain (0–80%) detection limit down 0.04%. exhibit sensitivity −0.0198 kPa–1 (0–3 kPa) broad range up 200 kPa robustness. reliably precisely distinguish kinds human joint motions, covering spectrum including bending, stretching, pressure. With readouts, ternary inputs "1", "0", "–1" could produced different stimuli, which expands command capacity logic outputs effective Morse code intuitive robotic control. Owing rapid response, long-term stability (10 000 cycles), breathability, superhydrophobicity, believe widely devices body motion interactions toward more future.

Language: Английский

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Machine Learning-Enhanced Flexible Mechanical Sensing

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

Published: Feb. 17, 2023

To realize a hyperconnected smart society with high productivity, advances in flexible sensing technology are highly needed. Nowadays, has witnessed improvements both the hardware performances of sensor devices and data processing capabilities device's software. Significant research efforts have been devoted to improving materials, mechanism, configurations systems quest fulfill requirements future technology. Meanwhile, advanced analysis methods being developed extract useful information from increasingly complicated collected by single or network sensors. Machine learning (ML) as an important branch artificial intelligence can efficiently handle such complex data, which be multi-dimensional multi-faceted, thus providing powerful tool for easy interpretation data. In this review, fundamental working mechanisms common types mechanical sensors firstly presented. Then how ML-assisted improves applications other closely-related various areas is elaborated, includes health monitoring, human-machine interfaces, object/surface recognition, pressure prediction, human posture/motion identification. Finally, advantages, challenges, perspectives associated fusion ML algorithms discussed. These will give significant insights enable advancement next-generation sensing.

Language: Английский

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Recent Advances in Flexible Sensors and Their Applications

Sensors, Journal Year: 2022, Volume and Issue: 22(12), P. 4653 - 4653

Published: June 20, 2022

Flexible sensors are low cost, wearable, and lightweight, as well having a simple structure per the requirements of engineering applications. Furthermore, for many potential applications, such human health monitoring, robotics, wearable electronics, artificial intelligence, flexible require high sensitivity stretchability. Herein, this paper systematically summarizes latest progress in development sensors. The review briefly presents state art sensors, including materials involved, sensing mechanisms, manufacturing methods, monitoring soft robotic Moreover, provides perspectives on challenges field prospect

Language: Английский

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Mechanoluminescent-Triboelectric Bimodal Sensors for Self-Powered Sensing and Intelligent Control

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

Published: March 24, 2023

Self-powered flexible devices with skin-like multiple sensing ability have attracted great attentions due to their broad applications in the Internet of Things (IoT). Various methods been proposed enhance mechano-optic or electric performance devices; however, it remains challenging realize display and accurate recognition motion trajectories for intelligent control. Here, we present a fully self-powered mechanoluminescent-triboelectric bimodal sensor based on micro-nanostructured mechanoluminescent elastomer, which can patterned-display force trajectories. The deformable liquid metals used as stretchable electrode make stress transfer stable through overall device achieve outstanding mechanoluminescence (with gray value 107 under stimulus low 0.3 N more than 2000 cycles reproducibility). Moreover, microstructured surface is constructed endows resulted composite significantly improved triboelectric performances (voltage increases from 8 24 V). Based excellent durability obtained composite, highly reliable control system by machine learning has developed controlling trolley, providing an approach advanced visual interaction smart wearable electronics future IoT era.

Language: Английский

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Flexible and Transparent Electronic Skin Sensor with Sensing Capabilities for Pressure, Temperature, and Humidity

ACS Applied Materials & Interfaces, Journal Year: 2023, Volume and Issue: 15(20), P. 24923 - 24932

Published: May 9, 2023

Inspired by the interlocked biological geometry of human skin, herein, we design a flexible and transparent sensor with square column arrays composites Ag nanoparticles (AgNPs), citric acid (CA), poly(vinyl alcohol) (PVA), which exhibit multisensory capabilities for pressure, temperature, humidity. As pressure sensor, AgNPs/CA/PVA possesses high sensitivity (-1.82 kPa-1), low detection limit (10 Pa), fast response (75 ms), outstanding stability due to contact resistance pressure. Because rigid dependence composite on can also act as temperature exhibits resolution (0.1 °C) reliability in detecting ambient temperature. In addition, it is found that amount water molecules adsorbed PVA CA changes Therefore, able detect humidity real time. This work proposes simple but useful route fabricate electrical skin has great potential perception

Language: Английский

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Conductive hydrogels for bioenergy harvesting and self-powered application

Progress in Materials Science, Journal Year: 2023, Volume and Issue: 138, P. 101156 - 101156

Published: June 23, 2023

Language: Английский

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Self-healing polymers through hydrogen-bond cross-linking: synthesis and electronic applications

Materials Horizons, Journal Year: 2023, Volume and Issue: 10(10), P. 4000 - 4032

Published: Jan. 1, 2023

Classification of H-bonding-based SHPs and their electronic applications.

Language: Английский

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Flexible Optoelectronic Multimodal Proximity/Pressure/Temperature Sensors with Low Signal Interference

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(49)

Published: Aug. 3, 2023

Multimodal tactile sensors are a crucial part of intelligent human-machine interaction and collaboration. Simultaneous detection proximity, pressure, temperature on single sensor can greatly promote the safety, interactivity, compactness systems. However, severe signal interference complex decoupling algorithms hinder actual applications. Here, this work reports flexible optoelectronic multimodal capable detecting proximity/pressure/temperature by integrating light waveguide an interdigital electrode (IDE) into compact fibrous sensor. Negligible is realized combining heterogeneous sensing mechanisms optics electronics, which encodes proximity capacitance, pressure intensity resistance. The exhibits large distance 225 mm with fast responses for detection, sensitivity 0.42 N-1 , 7% °C-1 . As proof concept, doll equipped accurately discriminate detect various stimuli, thus achieving safe immersive interactions user. This opens up promising paths self-decoupled related human/machine/environment

Language: Английский

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Machine Learning and AI Technologies for Smart Wearables

Electronics, Journal Year: 2023, Volume and Issue: 12(7), P. 1509 - 1509

Published: March 23, 2023

The recent progress in computational, communications, and artificial intelligence (AI) technologies, the widespread availability of smartphones together with growing trends multimedia data edge computation devices have led to new models paradigms for wearable devices. This paper presents a comprehensive survey classification smart wearables research prototypes using machine learning AI technologies. aims these from various technological perspectives which emerged, including: (1) empowered by AI; (2) collection architectures information processing wearables; (3) applications wearables. review covers wide range enabling technologies prototypes. main findings are that there significant technical challenges networking communication aspects such as issues routing overheads, computational complexity storage, algorithmic application-dependent training inference. concludes some future directions market potential research.

Language: Английский

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