Advances in graphene-based flexible and wearable strain sensors

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 464, P. 142576 - 142576

Published: March 22, 2023

Language: Английский

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Recent Advances in Multiresponsive Flexible Sensors towards E‐skin: A Delicate Design for Versatile Sensing

Small, Journal Year: 2021, Volume and Issue: 18(7)

Published: Nov. 25, 2021

Abstract Multiresponsive flexile sensors with strain, temperature, humidity, and other sensing abilities serving as real electronic skin (e‐skin) have manifested great application potential in flexible electronics, artificial intelligence (AI), Internet of Things (IoT). Although numerous sole function already been reported since the concept e‐skin, that mimics features human skin, was proposed about a decade ago, ones more capacities new emergences are urgently demanded. However, highly integrated sensitive multiresponsive functions becoming big thrust for detection body motions, physiological signals (e.g., blood pressure, electrocardiograms (ECG), electromyograms (EMG), sweat, etc.) environmental stimuli light, magnetic field, volatile organic compounds (VOCs)), which vital to real‐time all‐round health monitoring management. Herein, this review summarizes design, manufacturing, presents future challenges fabricating these next‐generation e‐skin wearable electronics.

Language: Английский

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Humidity-sensitive chemoelectric flexible sensors based on metal-air redox reaction for health management

Nature Communications, Journal Year: 2022, Volume and Issue: 13(1)

Published: Sept. 15, 2022

Numerous studies have shown flexible electronics play important roles in health management. The way of power supply is always an essential factor devices and self-powered ones are very attractive because the fabrication easiness, usage comfort aesthetics system. In this work, based on metal-air redox reaction, which usually used designing batteries, we design a chemoelectric humidity sensor where silk fibroin (SF) LiBr gel matrix containing parallel aligned graphene oxide (GO) flakes serve as electrolyte. abundant hydrophilic groups GO/SF hygroscopicity lead to tight dependence output current humidity, enabling high sensitivity (0.09 μA/s/1%), fast response (1.05 s) quick recovery (0.80 s). As proofs concept, all-in-one respiratory monitoring-diagnosing-treatment system non-contact human-machine interface, demonstrating applications

Language: Английский

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Self-powered and self-sensing devices based on human motion

Joule, Journal Year: 2022, Volume and Issue: 6(7), P. 1501 - 1565

Published: July 1, 2022

Language: Английский

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Self-Healing Polymers for Electronics and Energy Devices

Chemical Reviews, Journal Year: 2022, Volume and Issue: 123(2), P. 558 - 612

Published: Oct. 19, 2022

Polymers are extensively exploited as active materials in a variety of electronics and energy devices because their tailorable electrical properties, mechanical flexibility, facile processability, they lightweight. The polymer integrated with self-healing ability offer enhanced reliability, durability, sustainability. In this Review, we provide an update on the major advancements applications polymers devices, including electronic components, optoelectronics, dielectrics. differences fundamental mechanisms healing strategies between fracture breakdown underlined. key concepts for repairing integrity restoring functions device performance response to damage outlined. advantages limitations current approaches systematically summarized. Challenges future research opportunities highlighted.

Language: Английский

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Gradient Architecture‐Enabled Capacitive Tactile Sensor with High Sensitivity and Ultrabroad Linearity Range

Small, Journal Year: 2021, Volume and Issue: 17(43)

Published: Sept. 29, 2021

The sensitivity and linearity are critical parameters that can preserve the high pressure-resolution across a wide range simplify signal processing process of flexible tactile sensors. Although extensive micro-structured dielectrics have been explored to improve capacitive sensors, attenuation with increasing pressure is yet be fully resolved. Herein, novel dielectric layer based on gradient micro-dome architecture (GDA) presented simultaneously realize ultrabroad pixels rationally collocated amount height effectively regulate contact area hence enable linear variation in effective constant GDA under varying pressures. With systematical optimization, sensor exhibits 0.065 kPa-1 an up 1700 kPa, which first reported. Based excellent linearity, preserved full scale spectrum. Therefore, potential applications such as all-round physiological detection diverse scenarios, control instruction transmission combinatorial force inputs, convenient Morse code communication non-overlapping capacitance signals successfully demonstrated through single device.

Language: Английский

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

Nano-Micro Letters, Journal Year: 2023, Volume and Issue: 16(1)

Published: Nov. 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.

Language: Английский

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Advances in Wearable Strain Sensors Based on Electrospun Fibers

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(18)

Published: Feb. 25, 2023

Abstract Wearable strain sensors with the ability of detecting physiological activities play an important role in personalized healthcare. Electrospun fibers have become a popular building block for wearable due to their excellent mechanical properties, breathability, and light weight. In this review, structure preparation process electrospun conductive layer are systematically introduced. The impact materials structures on following discussion sensing performance optimization strategies is outlined. Furthermore, applications fiber‐based biomonitoring, motion detection, human‐machine interaction presented. Finally, challenges promising future directions community based pointed out.

Language: Английский

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Non‐equilibrium‐Growing Aesthetic Ionic Skin for Fingertip‐Like Strain‐Undisturbed Tactile Sensation and Texture Recognition

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(21)

Published: March 2, 2023

Humans use periodically ridged fingertips to precisely perceive the characteristics of objects via ion-based fast- and slow-adaptive mechanotransduction. However, designing artificial ionic skins with fingertip-like tactile capabilities remains challenging because contradiction between structural compliance pressure sensing accuracy (e.g., anti-interference from stretch texture recognition). Inspired by formation modulus-contrast hierarchical structure fingertips, an aesthetic skin grown a non-equilibrium Liesegang patterning process is introduced. This periodic stiff ridges embedded in soft hydrogel matrix enables strain-undisturbed triboelectric dynamic as well vibrotactile recognition. By coupling another piezoresistive ionogel, sensory system further fabricated robotic mimic simultaneous multimodal sensations fingers grasping actions. approach may inspire future design high-performance sensors for intelligent applications robotics prosthetics.

Language: Английский

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Recent Progress in Advanced Tactile Sensing Technologies for Soft Grippers

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(41)

Published: Aug. 27, 2023

Abstract Tactile sensing technology is crucial for soft grippers. Soft grippers equipped with intelligent tactile systems based on various sensors can interact safely the unstructured environments and obtain precise properties of objects (e.g., size shape). It essential to develop state‐of‐the‐art technologies handle different grasping tasks. In this review, development techniques robotic hands first introduced. Then, principles structures types normally adopted in grippers, including capacitive sensors, piezoresistive piezoelectric fiber Bragg grating (FBG) vision‐based triboelectric other advanced developed recently are briefly presented. Furthermore, modalities methodologies also described aspects force measurement, perception object properties, slip detection, fusion perception. The application scenarios summarized these technologies. Finally, challenges that need be tackled discussed perspectives addressing pointed out.

Language: Английский

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