Fiber/Fabric‐Based Piezoelectric and Triboelectric Nanogenerators for Flexible/Stretchable and Wearable Electronics and Artificial Intelligence

Advanced Materials, Journal Year: 2019, Volume and Issue: 32(5)

Published: July 26, 2019

Abstract Integration of advanced nanogenerator technology with conventional textile processes fosters the emergence textile‐based nanogenerators (NGs), which will inevitably promote rapid development and widespread applications next‐generation wearable electronics multifaceted artificial intelligence systems. NGs endow smart textiles mechanical energy harvesting multifunctional self‐powered sensing capabilities, while provide a versatile flexible design carrier extensive application platform for their development. However, due to lack an effective interactive communication channel between researchers specializing in those good at textiles, it is rather difficult achieve fiber/fabric‐based both excellent electrical output properties outstanding textile‐related performances. To this end, critical review presented on current state arts piezoelectric triboelectric respect basic classifications, material selections, fabrication techniques, structural designs, working principles, as well potential applications. Furthermore, difficulties tough challenges that can impede large‐scale commercial are summarized discussed. It hoped not only deepen ties NGs, but also push forward further research future NGs.

Language: Английский

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Advanced Soft Materials, Sensor Integrations, and Applications of Wearable Flexible Hybrid Electronics in Healthcare, Energy, and Environment

Advanced Materials, Journal Year: 2019, Volume and Issue: 32(15)

Published: July 8, 2019

Abstract Recent advances in soft materials and system integration technologies have provided a unique opportunity to design various types of wearable flexible hybrid electronics (WFHE) for advanced human healthcare human–machine interfaces. The biocompatible with miniaturized wireless systems is undoubtedly an attractive prospect the sense that successful device performance requires high degrees mechanical flexibility, sensing capability, user‐friendly simplicity. Here, most up‐to‐date materials, sensors, system‐packaging develop WFHE are provided. Details mechanical, electrical, physicochemical, properties discussed integrated sensor applications healthcare, energy, environment. In addition, limitations current discussed, as well key challenges future direction WFHE. Collectively, all‐inclusive review newly developed along summary imperative requirements material properties, capabilities, performance, skin integrations

Language: Английский

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The Future of Flexible Organic Solar Cells

Advanced Energy Materials, Journal Year: 2020, Volume and Issue: 10(25)

Published: May 5, 2020

Abstract Extensive efforts have been devoted during the last decade to organic solar cell research that has led remarkable progress and achieved power conversion efficiencies (PCEs) in excess of 10%. Among existing flexible cells, ultrathin cells with a total thickness <10 µm important advantages, including good mechanical bending stabilities conformability. These advantages generation solutions for wearable electronics. In this essay, future directions pertaining these are discussed based on potential applications textile‐compatible cells. Both process engineering development material substrate films improved PCE which turn small difference between >10 ≤10 µm. Key technologies further improvement flexible/ultrathin discussed. Strategies improve stability some aspects, determine robustness also presented

Language: Английский

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Soft actuators for real-world applications

Nature Reviews Materials, Journal Year: 2021, Volume and Issue: 7(3), P. 235 - 249

Published: Nov. 10, 2021

Language: Английский

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Progress in understanding structure and transport properties of PEDOT-based materials: A critical review

Progress in Materials Science, Journal Year: 2019, Volume and Issue: 108, P. 100616 - 100616

Published: Nov. 2, 2019

Since the late '80s, a highly stable conductive polymer has been developed, that is poly(3,4-ethylene dioxythiophene), also known as PEDOT. Its increasing conductivity throughout years combined with its intrinsic stability have aroused great attention both in academic and industrial fields. The growing importance of PEDOT, can be easily acknowledged through numerous applications thermoelectricity, photovoltaics, lighting, sensing, technical coatings, transparent electrodes, bioelectronics, so forth. Although high electrical strongly established literature, wide range data shows disorder, limiting factor charges' transport, hinders design materials optimal performances. aim this article to review discuss recent progresses dealing transport properties PEDOT materials, special on morphological structural features. Particular emphasis given commercial PEDOT:PSS well other PEDOT-based stabilized smaller counter-anions. It appears mechanisms are closely related fabrication process, crystallinity material choice With tunable properties, new functionalities appear accessible add up already existing concisely highlighted.

Language: Английский

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Fully organic compliant dry electrodes self-adhesive to skin for long-term motion-robust epidermal biopotential monitoring

Nature Communications, Journal Year: 2020, Volume and Issue: 11(1)

Published: Sept. 17, 2020

Abstract Wearable dry electrodes are needed for long-term biopotential recordings but limited by their imperfect compliance with the skin, especially during body movements and sweat secretions, resulting in high interfacial impedance motion artifacts. Herein, we report an intrinsically conductive polymer electrode excellent self-adhesiveness, stretchability, conductivity. It shows much lower skin-contact noise static dynamic measurement than current standard gel electrodes, enabling to acquire high-quality electrocardiogram (ECG), electromyogram (EMG) electroencephalogram (EEG) signals various conditions such as wet skin movement. Hence, this can be used healthcare monitoring complex daily conditions. We further investigated capabilities of a clinical setting realized its ability detect arrhythmia features atrial fibrillation accurately, quantify muscle activity deep tendon reflex testing contraction against resistance.

Language: Английский

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A Wearable Supercapacitor Based on Conductive PEDOT:PSS‐Coated Cloth and a Sweat Electrolyte

Advanced Materials, Journal Year: 2020, Volume and Issue: 32(24)

Published: May 11, 2020

Abstract A sweat‐based flexible supercapacitor (SC) for self‐powered smart textiles and wearable systems is presented. The developed SC uses sweat as the electrolyte poly(3,4‐ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) active electrode. With PEDOT:PSS coated onto cellulose/polyester cloth, shows specific capacitance of 8.94 F g −1 (10 mF cm −2 ) at 1 mV s . artificial sweat, energy power densities are 1.36 Wh kg 329.70 W , respectively 1.31 V its 5.65 real human observed 0.25 30.62 respectively. performance evaluated with different volumes (20, 50, 100 µL), bending radii (10, 15, 20 mm), charging/discharging stability (4000 cycles), washability. successful on‐body testing, first demonstration suitability a cloth‐based sensors to monitor salinity attractive use body fluids, presented approach safe sustainable route meet requirements in systems.

Language: Английский

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Designing flexible, smart and self-sustainable supercapacitors for portable/wearable electronics: from conductive polymers

Chemical Society Reviews, Journal Year: 2021, Volume and Issue: 50(22), P. 12702 - 12743

Published: Jan. 1, 2021

Progress of utilizing conductive polymers and their composites to prepare flexible, smart self-sustainable supercapacitors for portable/wearable electronics is reviewed.

Language: Английский

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Two-birds-one-stone: multifunctional supercapacitors beyond traditional energy storage

Energy & Environmental Science, Journal Year: 2021, Volume and Issue: 14(4), P. 1854 - 1896

Published: Jan. 1, 2021

A comprehensive overview on the recent progress of multifunctional supercapacitors which combine energy storage capability with other functions.

Language: Английский

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Wearable Capacitive Pressure Sensor Based on MXene Composite Nanofibrous Scaffolds for Reliable Human Physiological Signal Acquisition

ACS Applied Materials & Interfaces, Journal Year: 2020, Volume and Issue: 12(19), P. 22212 - 22224

Published: April 17, 2020

In recent years, highly sensitive pressure sensors that are flexible, biocompatible, and stretchable have attracted significant research attention in the fields of wearable electronics smart skin. However, there has been a considerable challenge to simultaneously achieve sensitive, low-cost coupled with optimum mechanical stability an ultralow detection limit for subtle physiological signal monitoring devices. Targeting aforementioned issues, herein, we report facile fabrication reliable capacitive sensor ultralow-pressure measurement by sandwiching MXene (Ti3C2Tx)/poly(vinylidene fluoride-trifluoroethylene) (PVDF-TrFE) composite nanofibrous scaffolds as dielectric layer between biocompatible poly-(3,4-ethylenedioxythiophene) polystyrene sulfonate /polydimethylsiloxane electrodes. The fabricated exhibits high sensitivity 0.51 kPa–1 minimum 1.5 Pa. addition, it also enables linear sensing over broad range (0–400 kPa) reliability 10,000 cycles even at extremely (>167 kPa). nanofiber-based is enhanced loading, thereby increasing constant up 40 reducing compression modulus 58% compared pristine PVDF-TrFE nanofiber scaffolds. proposed can be used determine health condition patients signals (pulse rate, respiration, muscle movements, eye twitching) represents good candidate next generation human–machine interfacing device.

Language: Английский

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