A non-volatile organic electrochemical device as a low-voltage artificial synapse for neuromorphic computing

Nature Materials, Год журнала: 2017, Номер 16(4), С. 414 - 418

Опубликована: Фев. 20, 2017

Язык: Английский

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

Advanced Materials, Год журнала: 2019, Номер 31(48)

Опубликована: Сен. 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.

Язык: Английский

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Skin-inspired highly stretchable and conformable matrix networks for multifunctional sensing

Nature Communications, Год журнала: 2018, Номер 9(1)

Опубликована: Янв. 10, 2018

Mechanosensation electronics (or Electronic skin, e-skin) consists of mechanically flexible and stretchable sensor networks that can detect quantify various stimuli to mimic the human somatosensory system, with sensations touch, heat/cold, pain in skin through sensory receptors neural pathways. Here we present a skin-inspired highly conformable matrix network (SCMN) successfully expands e-skin sensing functionality including but not limited temperature, in-plane strain, humidity, light, magnetic field, pressure, proximity. The actualized specific expandable units integrated on structured polyimide network, potentially three-dimensional (3D) integration scheme, also fulfill simultaneous multi-stimulus achieve an adjustable range large-area expandability. We further construct personalized intelligent prosthesis demonstrate its use real-time spatial pressure mapping temperature estimation. Looking forward, this SCMN has broader applications humanoid robotics, new prosthetics, human-machine interfaces, health-monitoring technologies.

Язык: Английский

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Wearable and flexible electronics for continuous molecular monitoring

Chemical Society Reviews, Год журнала: 2018, Номер 48(6), С. 1465 - 1491

Опубликована: Апрель 3, 2018

Wearable/flexible chemical sensors enable continuous molecular monitoring and provide an individual's dynamic health information at the level.

Язык: Английский

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Ultrastretchable, transparent triboelectric nanogenerator as electronic skin for biomechanical energy harvesting and tactile sensing

Science Advances, Год журнала: 2017, Номер 3(5)

Опубликована: Май 5, 2017

Stretchable, transparent nanogenerator enabled by ionic hydrogel converts motion energy into electricity and senses touch pressure.

Язык: Английский

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Wearable sensors: modalities, challenges, and prospects

Lab on a Chip, Год журнала: 2017, Номер 18(2), С. 217 - 248

Опубликована: Ноя. 28, 2017

Wearable sensors have recently seen a large increase in both research and commercialization. However, success wearable has been mix of progress setbacks. Most commercial smart adaptation existing mechanical, electrical optical methods measuring the body. This involved innovations how to miniaturize sensing technologies, make them conformal flexible, development companion software that increases value measured data. chemical modalities experienced greater challenges adoption, especially for non-invasive sensors. There also significant making fundamental improvements electrical, modalities, improving their specificity detection. Many these can be understood by appreciating body's surface (skin) as more an information barrier than source. With deeper understanding faced state-of-the-art sensor technology, roadmap becomes clearer creating next generation breakthroughs.

Язык: Английский

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Flexible Electronics toward Wearable Sensing

Accounts of Chemical Research, Год журнала: 2019, Номер 52(3), С. 523 - 533

Опубликована: Фев. 15, 2019

ConspectusWearable sensors play a crucial role in realizing personalized medicine, as they can continuously collect data from the human body to capture meaningful health status changes time for preventive intervention. However, motion artifacts and mechanical mismatches between conventional rigid electronic materials soft skin often lead substantial sensor errors during epidermal measurement. Because of its unique properties such high flexibility conformability, flexible electronics enables natural interaction body. In this Account, we summarize our recent studies on design devices systems physical chemical monitoring. Material innovation, design, device fabrication, system integration, employed toward continuous noninvasive wearable sensing are discussed.A typically contains several key components, including substrate, active layer, interface layer. The inorganic-nanomaterials-based layer (prepared by transfer or solution process) is shown have good physicochemical properties, electron/hole mobility, strength. Flexible based printed transferred has great promise sensing. For example, integrating nanowire transistor array matrix conductive pressure-sensitive rubber tactile pressure mapping; tactile-pressure-sensitive e-skin organic light-emitting diodes be integrated instantaneous visualization. Such been applied patches monitor temperature, electrocardiograms, activities. addition, liquid metals could serve an attractive candidate because their excellent conductivity, flexibility, stretchability. Liquid-metal-enabled (based liquid–liquid heterojunctions embedded microchannels) utilized wide range physiological parameters (e.g., pulse temperature).Despite rapid growth technologies, there urgent need development that molecular retrieve more insightful information. We developed sweat-sensing platform real-time multiplexed perspiration analysis. An iontophoresis module sweat enable autonomous programmed extraction. A microfluidics-based was demonstrated sampling, sensing, rate Roll-to-roll gravure printing allows mass production high-performance at low cost. These dehydration monitoring, cystic fibrosis diagnosis, drug glucose monitoring.Future work field should focus designing robust accurately large-scale determine how measured information relates individual's specific conditions. Further research these directions, along with large sets collected via will significant impact future healthcare.

Язык: Английский

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Tough and Water‐Insensitive Self‐Healing Elastomer for Robust Electronic Skin

Advanced Materials, Год журнала: 2018, Номер 30(13)

Опубликована: Фев. 9, 2018

An electronic (e-) skin is expected to experience significant wear and tear over time. Therefore, self-healing stretchable materials that are simultaneously soft with high fracture energy, tolerance of damage or small cracks without propagating, essential requirements for the realization robust e-skin. However, previously reported elastomers especially polymers mostly viscoelastic lack mechanical toughness. Here, a new class polymeric material crosslinked through rationally designed multistrength hydrogen bonding interactions reported. The resultant supramolecular network in polymer film realizes exceptional properties such as notch-insensitive stretchability (1200%), toughness 12 000 J m-2 , autonomous even artificial sweat. tough enable wafer-scale fabrication e-skin devices, which will provide directions future robotics prosthetics.

Язык: Английский

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A Bioinspired Mineral Hydrogel as a Self‐Healable, Mechanically Adaptable Ionic Skin for Highly Sensitive Pressure Sensing

Advanced Materials, Год журнала: 2017, Номер 29(22)

Опубликована: Апрель 18, 2017

In the past two decades, artificial skin-like materials have received increasing research interests for their broad applications in intelligence, wearable devices, and soft robotics. However, profound challenges remain terms of imitating human skin because its unique combination mechanical sensory properties. this work, a bioinspired mineral hydrogel is developed to fabricate novel type mechanically adaptable ionic sensor. Due viscoelastic properties, hydrogel-based capacitive sensor compliant, self-healable, can sense subtle pressure changes, such as gentle finger touch, motion, or even small water droplets. It might not only show great potential human/machine interactions, personal healthcare, but also promote development next-generation intelligent devices.

Язык: Английский

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Learning the signatures of the human grasp using a scalable tactile glove

Nature, Год журнала: 2019, Номер 569(7758), С. 698 - 702

Опубликована: Май 1, 2019

Язык: Английский

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