Bioinspired flexible, breathable, waterproof and self-cleaning iontronic tactile sensors for special underwater sensing applications

Nano Energy, Год журнала: 2023, Номер 110, С. 108367 - 108367

Опубликована: Март 22, 2023

Язык: Английский

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Skin-Friendly and Wearable Iontronic Touch Panel for Virtual-Real Handwriting Interaction

ACS Nano, Год журнала: 2023, Номер 17(9), С. 8293 - 8302

Опубликована: Апрель 19, 2023

Touch panels are deemed as a critical platform for the future of human–computer interaction and metaverse. Recently, stretchable iontronic touch have attracted attention due to their superior adhesivity human body. However, such adhesion can not be named "real wearable", leading discomfort wearer, rashes or itching with long-time wearing. Herein, skin-friendly wearable textile-based panel highly touch-sensing resolution deformation insensitivity is designed based on an in-suit growing strategy. This endows excellent interfacial hydrophilic biocompatibility skin by overcoming bottlenecks hydrogel-based uncomfortable sticky interface low mechanical behavior. The developed enables handwriting good capacity (114 MPa), nearly 4145 times higher than pure hydrogel. More importantly, our possesses intrinsic wide external loading from silver fiber (<0.003 g) even heavy metal block (>10 kg). As proof concept, applied interaction, flexible keyboard sketchpad. qualitities helpful next-generation electronics.

Язык: Английский

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Versatile Ion‐Gel Fibrous Membrane for Energy‐Harvesting Iontronic Skin

Advanced Functional Materials, Год журнала: 2023, Номер 33(37)

Опубликована: Май 14, 2023

Abstract Developing versatile and high sensitivity sensors is beneficial for promoting flexible electronic devices human‐machine interactive systems. Researchers are working on the exploration of various active sensing materials toward broad detection, multifunction, low‐power consumption. Here, a ion‐gel fibrous membrane presented by electrospinning technology utilized to construct capacitive triboelectric nanogenerator (TENG). The iontronic sensor exhibits inherently favorable repeatability, which retains long‐term stability after 5000 cycles. can also detect clear pulse waveform at human wrist enable mapping pressure distribution sensory matrix. For TENG, maximum peak power 54.56 µW be used commercial electronics. In addition, prepared TENG array achieve interactive, rapidly responsive, accurate dynamic monitoring, broadens direct effective devices. promising provide an outstanding approach physiological biomechanical energy harvesting, interaction, self‐powered monitoring

Язык: Английский

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Soft Sensors and Actuators for Wearable Human–Machine Interfaces

Chemical Reviews, Год журнала: 2024, Номер 124(4), С. 1464 - 1534

Опубликована: Фев. 5, 2024

Haptic human-machine interfaces (HHMIs) combine tactile sensation and haptic feedback to allow humans interact closely with machines robots, providing immersive experiences convenient lifestyles. Significant progress has been made in developing wearable sensors that accurately detect physical electrophysiological stimuli improved softness, functionality, reliability, selectivity. In addition, soft actuating systems have developed provide high-quality by precisely controlling force, displacement, frequency, spatial resolution. this Review, we discuss the latest technological advances of actuators for demonstration HHMIs. We particularly focus on highlighting material structural approaches enable desired sensing properties necessary effective Furthermore, promising practical applications current HHMI technology various areas such as metaverse, robotics, user-interactive devices are discussed detail. Finally, Review further concludes discussing outlook next-generation technology.

Язык: Английский

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Micropyramid Array Bimodal Electronic Skin for Intelligent Material and Surface Shape Perception Based on Capacitive Sensing

Advanced Science, Год журнала: 2023, Номер 11(3)

Опубликована: Ноя. 29, 2023

Abstract Developing electronic skins (e‐skins) that are comparable to or even beyond human tactile perception holds significant importance in advancing the process of intellectualization. In this context, a machine‐learning‐motivated micropyramid array bimodal (MAB) e‐skin based on capacitive sensing is reported, which enables spatial mapping applications (proximity and pressure) implemented via fringing iontronic effects, such as contactless measurement 3D objects contact recognition Braille letters. Benefiting from effect single‐micropyramid structure, MAB pressure mode yields impressive features: maximum sensitivity 655.3 kPa −1 (below 0.5 kPa), linear 327.9 (0.5–15 an ultralow limit detection 0.2 Pa. With assistance multilayer perceptron convolutional neural network, can accurately perceive 6 materials 10 surface shapes training learning using collected datasets proximity modes, thus allowing it achieve precise different within one proximity‐pressure cycle. The development opens new avenue for robotic skin expansion advanced applications.

Язык: Английский

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A Robust and Adhesive Hydrogel Enables Interfacial Coupling for Continuous Temperature Monitoring

Advanced Functional Materials, Год журнала: 2023, Номер 33(33)

Опубликована: Апрель 25, 2023

Abstract Continuous temperature monitoring by flexible hydrogel‐based electronics achieves rapid advances, overcoming the drawbacks of rigid and unportable thermocouples. However, an open question is whether how thermosensitive hydrogel designing can prevent mechanical mismatching between devices skin‐tissues reduces interfacial failure. Herein, a versatile thermistor epidermal sensor (HTES) paradigm engineered consisting self‐adhesive function layer (PEST) in tandem with surface spraying Ag interdigital electrode. Leveraging advantage catechol chemistry inspired tannic acid‐coated cellulose nanocrystals, resultant PEST adhesion‐cohesion equilibrium along superior thermosensitivity. The assembled HTES thereby yields unprecedented features thermosensitivity (TCR = 1.43% °C −1 ), exceptional integrity (hammering 200 cycles, current variation <9%), impressive compatibility (adhesion strength, 25 kPa), environmental stability (thermosensation retention 98% over 5 days). By in‐situ microstructure observation, unique geometrical synchronization arbitrary curvilinear surfaces (e.g., sphere, cone, saddle) stemming from elastic dissipation discrete rupture adhesive fibrillar bridges validated, affording competitive advantages than that state‐of‐the‐art for alleviating deterioration, which dramatically inspires advanced design strategies paves way commercialization attachable electronics.

Язык: Английский

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An Electrode‐Grounded Droplet‐Based Electricity Generator (EG‐DEG) for Liquid Motion Monitoring

Advanced Functional Materials, Год журнала: 2023, Номер 33(36)

Опубликована: Май 14, 2023

Abstract Triboelectric nanogenerator (TENG) is a potential technology for harvesting water energy and serving as self‐powered sensors. Among the innovative designs of TENG, droplet‐based electricity generator (DEG) has achieved high instantaneous power density under droplets impinging. However, exposed top electrode usually hydrophilic subjected to corrosion. This study reports an electrode‐grounded (EG‐DEG) with graphene sheets embedded carbon (GSEC) electrode. Compared traditional electrodes, designed device GSEC exhibits great hydrophobicity, corrosion resistance impinging better output performance. The working mechanism discussed in depth performance EG‐DEG systematically studied. To demonstrate robust capability sensors, three‐electrodes mode developed monitor droplet velocities on different triboelectric surfaces. Furthermore, can be assembled pipe acquire flow rate fluid according frequency signals. An intelligent system further display fluid. Therefore, also shows its application prospects particles detection analysis future.

Язык: Английский

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A Perceptual and Interactive Integration Strategy Toward Telemedicine Healthcare Based on Electroluminescent Display and Triboelectric Sensing 3D Stacked Device

Advanced Functional Materials, Год журнала: 2024, Номер 34(40)

Опубликована: Май 6, 2024

Abstract The conventional medical assistive strategy for wearable devices involves sensing physiological signals and subsequent analysis while it lacks the capability visual interaction often necessitates use of additional bulky display. Herein, a perceptual based on electroluminescent triboelectric 3D stacked device (ETD) is proposed to address current issues. ETD utilizes bottom sensor tactile information, which processed analyzed, ultimately triggering selective illumination top array through external power circuitry. possesses generate 100 V with 1.5 cm 2 stable ability at 30 drive voltage. Based outstanding features ETD, two assistance scenarios are explored. I) captures signals, such as pulse rate, respiratory special joint flexion, in situ displays corresponding effectively assisting patients/elders self‐monitoring. II) A bidirectional interactive telemedicine system utilizing ETDs implemented, not only gathers real‐time activity status from but also realizes that remote physician assesses safety assessment results wirelessly back‐communicated enabling advice.

Язык: Английский

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Hierarchical Structure by Self‐sedimentation of Liquid Metal for Flexible Sensor Integrating Pressure Detection and Triboelectric Nanogenerator

Advanced Functional Materials, Год журнала: 2024, Номер 34(33)

Опубликована: Апрель 19, 2024

Abstract Multifunctional integration is a pivotal aspect in the development of flexible sensors that facilitate augmented interaction with physical environment. However, contemporary multifunctional face challenges arising from their complex structures and high costs. Therefore, polydimethylsiloxane (PDMS) /liquid metal (LM) films hierarchical structure prepared via gravity‐induced deposition LM are applied to sensors. PDMS/LM exhibit remarkable flexibility function as electrodes for pressure well single‐electrode mode triboelectric nanogenerator (TENG). The porous PDMS/carbon nanotube (CNT) dielectric an array developed sensing, showing commendable sensitivity (0.671 kPa −1 ) even under low pressures (0–17 kPa). Compared solid dielectrics, its improved over entire range. sensor achieves response time ≈80 ms demonstrates exceptional stability. Furthermore, when film functions TENG, it can serve self‐powered measuring dynamic forces aid material recognition assistance capacitive sensing. This study provides new perspective on simplified design

Язык: Английский

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Deformation induced absorption band-tunable smart CNTs/Ti3C2Tx-WPU electromagnetic wave absorbing aerogel

Carbon, Год журнала: 2024, Номер 223, С. 119023 - 119023

Опубликована: Март 6, 2024

Язык: Английский

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