Electronic Skin: Recent Progress and Future Prospects for Skin‐Attachable Devices for Health Monitoring, Robotics, and Prosthetics

Advanced Materials, Journal Year: 2019, Volume and Issue: 31(48)

Published: Sept. 19, 2019

Abstract Recent progress in electronic skin or e‐skin research is broadly reviewed, focusing on technologies needed three main applications: skin‐attachable electronics, robotics, and prosthetics. First, since will be exposed to prolonged stresses of various kinds needs conformally adhered irregularly shaped surfaces, materials with intrinsic stretchability self‐healing properties are great importance. Second, tactile sensing capability such as the detection pressure, strain, slip, force vector, temperature important for health monitoring attachable devices, enable object manipulation surrounding environment robotics For chemical electrophysiological wireless signal communication high significance fully gauge state users ensure user comfort. prosthetics, large‐area integration 3D surfaces a facile scalable manner critical. Furthermore, new processing strategies using neuromorphic devices efficiently process information parallel low power manner. neural interfacing electrodes These topics discussed, progress, current challenges, future prospects.

Language: Английский

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Recent Progress in Flexible Tactile Sensors for Human‐Interactive Systems: From Sensors to Advanced Applications

Advanced Materials, Journal Year: 2021, Volume and Issue: 33(47)

Published: April 22, 2021

Abstract Flexible tactile sensors capable of measuring mechanical stimuli via physical contact have attracted significant attention in the field human‐interactive systems. The utilization information can complement vision and/or sound interaction and provide new functionalities. Recent advancements micro/nanotechnology, material science, technology resulted development high‐performance that reach even surpass sensing ability human skin. Here, important advances flexible over recent years are summarized, from sensor designs to system‐level applications. This review focuses on representative strategies based design configurations for improving key performance parameters including sensitivity, detection range/linearity, response time/hysteresis, spatial resolution/crosstalk, multidirectional force detection, insensitivity other stimuli. System‐level integration practical applications beyond conceptual prototypes promising applications, such as artificial electronic skin robotics prosthetics, wearable controllers electronics, bidirectional communication tools, also discussed. Finally, perspectives issues regarding further provided.

Language: Английский

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Graphene-based wearable piezoresistive physical sensors

Materials Today, Journal Year: 2020, Volume and Issue: 36, P. 158 - 179

Published: Jan. 13, 2020

Language: Английский

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Ti₃C₂T_x MXene-Based Flexible Piezoresistive Physical Sensors

ACS Nano, Journal Year: 2022, Volume and Issue: 16(2), P. 1734 - 1758

Published: Feb. 11, 2022

MXenes have received increasing attention due to their two-dimensional layered structure, high conductivity, hydrophilicity, and large specific surface area. Because of these distinctive advantages, are considered as very competitive pressure-sensitive materials in applications flexible piezoresistive sensors. This work reviews the preparation methods, basic properties, assembly methods recent developments sensor applications. The MXene-based sensors can be categorized into one-dimensional fibrous, planar, three-dimensional according various structures. trends multifunctional integration pressure also summarized. Finally, we end this review by describing opportunities challenges for great prospects field

Language: Английский

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Pressure-Based Biosensor Integrated with a Flexible Pressure Sensor and an Electrochromic Device for Visual Detection

Analytical Chemistry, Journal Year: 2021, Volume and Issue: 93(5), P. 2916 - 2925

Published: Jan. 25, 2021

This work demonstrated a pressure-based biosensor integrated with flexible pressure sensor and an electrochromic device for visual detection. Initially, sandwich-type immunoreaction target carcinoembryonic antigen (CEA, as model analyte) was carried out using the capture antibody (cAb) platinum nanoparticles-labeled detection (PtNPs-dAb) in reaction cell. The added hydrogen peroxide (H2O2) could be catalyzed by PtNPs to generate oxygen (O2). In sealed chamber, increased overflowing O2. Meanwhile, skin-inspired excellent sensing performance fabricated monitor change real time. Thus, electrical signal of reveal concentration. Moreover, voltage-regulated based on polyaniline (PANI) tungsten oxide (WO3) into platform provide visualized readout. According sensor, would its color from green blue, which also revealed concentration observed naked eye. Under optimal conditions, presented high sensitivity CEA detectable range 0.2–50 ng/mL. limit (LOD) 94 pg/mL. selectivity, reproducibility, accuracy were satisfying. Furthermore, this immunoassay gives path developing biosensors point-of-care settings.

Language: Английский

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Cutaneous Ionogel Mechanoreceptors for Soft Machines, Physiological Sensing, and Amputee Prostheses

Advanced Materials, Journal Year: 2021, Volume and Issue: 33(38)

Published: Aug. 1, 2021

Abstract Touch sensing has a central role in robotic grasping and emerging human–machine interfaces for robot‐assisted prosthetics. Although advancements soft conductive polymers have promoted the creation of diverse pressure sensors, these sensors are difficult to be employed as touch skins robotics prostheses due their limited sensitivity, narrow range, complex structure fabrication process. Here, highly sensitive robust skin is presented with ultracapacitive that combines ionic hydrogels commercially available fabrics. Prototypical designs capacitive through facile manufacturing methods introduced high sensitivity up 1.5 kPa −1 (≈44 times higher than conventional parallel‐plate counterparts), broad detection range over four orders magnitudes (≈35 Pa 330 kPa), ultrahigh baseline capacitance, fast response time (≈18 ms), good repeatability demonstrated. Ionogel composed an array cutaneous mechanoreceptors capable monitoring various physiological signals shape further developed. The can integrated within bionic hand provide industrial robot amputee tactile feedback when handling delicate objects, illustrating its potential applications next‐generation human‐in‐the‐loop systems sensing.

Language: Английский

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Graded Interlocks for Iontronic Pressure Sensors with High Sensitivity and High Linearity over a Broad Range

ACS Nano, Journal Year: 2022, Volume and Issue: 16(3), P. 4338 - 4347

Published: March 2, 2022

Flexible pressure sensors that have high sensitivity, linearity, and a wide pressure-response range are highly desired in applications of robotic sensation human health monitoring. The challenge comes from the incompressibility soft materials stiffening microstructures device interfaces lead to gradually saturated response. Therefore, signal is nonlinear limited. Here, we show an iontronic flexible sensor can achieve sensitivity (49.1 kPa-1), linear response (R2 > 0.995) over broad (up 485 kPa) enabled by graded interlocks array hemispheres with fine pillars ionic layer. linearity fact pillar deformation compensate for effect structural stiffening. response-relaxation time <5 ms, allowing detect vibration signals frequencies up 200 Hz. Our has been used recognize objects different weights based on machine learning during gripper grasping tasks. This work provides strategy make combined performances range.

Language: Английский

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Physical sensors for skin‐inspired electronics

InfoMat, Journal Year: 2019, Volume and Issue: 2(1), P. 184 - 211

Published: Dec. 3, 2019

Abstract Skin, the largest organ in human body, is sensitive to external stimuli. In recent years, an increasing number of skin‐inspired electronics, including wearable implantable and electronic skin, have been developed because their broad applications healthcare robotics. Physical sensors are one key building blocks electronics. Typical physical include mechanical sensors, temperature humidity electrophysiological so on. this review, we systematically review latest advances sensors. The working mechanisms, materials, device structures, performance various summarized discussed detail. Their health monitoring, disease diagnosis treatment, intelligent robots reviewed. addition, several novel properties such as versatility, self‐healability, implantability introduced. Finally, existing challenges future perspectives for practical proposed. image

Language: Английский

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Naturally sourced hydrogels: emerging fundamental materials for next-generation healthcare sensing

Chemical Society Reviews, Journal Year: 2023, Volume and Issue: 52(9), P. 2992 - 3034

Published: Jan. 1, 2023

The flourishing development of flexible healthcare sensing systems is inseparable from the fundamental materials with application-oriented mechanical and electrical properties. Thanks to continuous inspiration our Mother Nature, hydrogels originating natural biomass are attracting growing attention for their structural functional designs owing unique chemical, physical biological These highly efficient architectural enable them be most promising candidates electronic devices. This comprehensive review focuses on recent advances in naturally sourced constructing multi-functional sensors applications thereof. We first briefly introduce representative polymers, including polysaccharides, proteins, polypeptides, summarize physicochemical design principles fabrication strategies hydrogel based these polymers outlined after material properties required presented. then highlight various techniques devices, illustrate examples wearable or implantable bioelectronics pressure, strain, temperature, biomarker field systems. Finally, concluding remarks challenges prospects hydrogel-based provided. hope that this will provide valuable information next-generation build a bridge between as matter an applied target accelerate new near future.

Language: Английский

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Flexible Metamaterial Electronics

Advanced Materials, Journal Year: 2022, Volume and Issue: 34(52)

Published: March 24, 2022

Abstract Over the last decade, extensive efforts have been made on utilizing advanced materials and structures to improve properties functionalities of flexible electronics. While conventional ways are approaching their natural limits, a revolutionary strategy, namely metamaterials, is emerging toward engineering structural break existing fetters. Metamaterials exhibit supernatural physical behaviors, in aspects mechanical, optical, thermal, acoustic, electronic that inaccessible materials, such as tunable stiffness or Poisson's ratio, manipulating electromagnetic elastic waves, topological programmable morphability. These salient merits motivate metamaterials brand‐new research direction inspired innovative applications Here, groundbreaking interdisciplinary field first coined “flexible metamaterial electronics,” focusing enhancing innovating electronics via design metamaterials. Herein, latest progress trends this infant reviewed while highlighting potential value. First, brief overview starts with introducing combination Then, developed discussed, self‐adaptive deformability, ultrahigh sensitivity, multidisciplinary functionality, followed by discussion prospects. Finally, challenges opportunities facing advance cutting‐edge summarized.

Language: Английский

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