Ultra elastic, stretchable, self-healing conductive hydrogels with tunable optical properties for highly sensitive soft electronic sensors

Journal of Materials Chemistry A, Journal Year: 2020, Volume and Issue: 8(46), P. 24718 - 24733

Published: Jan. 1, 2020

A self-healing hydrogel ionic conductor has been developed by combining dynamic covalent chemistry with nanofiller reinforcement and micelle crosslinking, used for sensing of diverse human activities.

Language: Английский

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Skin-like hydrogel devices for wearable sensing, soft robotics and beyond

iScience, Journal Year: 2021, Volume and Issue: 24(11), P. 103174 - 103174

Published: Sept. 27, 2021

Skin-like electronics are developing rapidly to realize a variety of applications such as wearable sensing and soft robotics. Hydrogels, biomaterials, have been studied intensively for skin-like electronic utilities due their unique features softness, wetness, biocompatibility ionic capability. These could potentially blur the gap between biological systems hard artificial machines. However, development hydrogel devices is still in its infancy faces challenges including limited functionality, low ambient stability, poor surface adhesion, relatively high power consumption (as sensors). This review aims summarize current skin-inspired address these challenges. We first conduct an overview hydrogels existing strategies increase toughness conductivity. Next, we describe approaches leverage with advanced merits anti-dehydration, anti-freezing, adhesion. Thereafter, highlight state-of-the-art electronics, robotics, energy harvesting. Finally, conclude outline future trends.

Language: Английский

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From Glutinous‐Rice‐Inspired Adhesive Organohydrogels to Flexible Electronic Devices Toward Wearable Sensing, Power Supply, and Energy Storage

Advanced Functional Materials, Journal Year: 2021, Volume and Issue: 32(1)

Published: Oct. 1, 2021

Abstract Flexible electronic devices (FEDs) based on hydrogels are attracting increasing interest, but the fabrication of for FEDs with adhesiveness and high robustness in harsh‐temperature conditions long‐term use remains a challenge. Herein, glutinous‐rice‐inspired adhesive organohydrogels developed by introducing amylopectin into copolymer network through “one‐pot” crosslinking procedure glycerol–water mixed solvent containing potassium chloride as conductive ingredient. The exhibit excellent transparency (>90%), conductivity, stretchability, tensile strength, adhesiveness, anti‐freezing property, moisture retention ability. wearable strain sensor assembled from achieves wide working range, sensitivity (gauge factor: 8.82), low response time, reversibility, properly responds long‐time storage (90 days). is further integrated Bluetooth transmitter receiver fabricating wireless sensors. Notably, sandwich‐structured capacitive pressure reliefs electrodes records new gauge factor 9.43 kPa −1 detection limit, outstanding reversibility. Furthermore, detachable durable batteries all‐in‐one supercapacitors also fabricated utilizing electrolytes. Overall, this work offers strategy to fabricate robust toward sensing, power supply, energy storage.

Language: Английский

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Conductive Polymer Nanocomposites for Stretchable Electronics: Material Selection, Design, and Applications

ACS Applied Materials & Interfaces, Journal Year: 2021, Volume and Issue: 13(37), P. 43831 - 43854

Published: Sept. 13, 2021

Stretchable electronics that can elongate elastically as well flex are crucial to a wide range of emerging technologies, such wearable medical devices, electronic skin, and soft robotics. Critical stretchable is their ability withstand large mechanical strain without failure while retaining electrical conduction properties, feat significantly beyond traditional metals silicon-based semiconductors. Herein, we present review the recent advances in conductive polymer nanocomposites with exceptional stretchability which have potential transform applications, including sensors for biophysical signals, conductors electrodes, deformable energy-harvesting -storage devices. achieving these stretching properties judicious selection hybridization nanomaterials, novel microstructure designs, facile fabrication processes, focus this Review. To highlight potentials nanocomposites, summary some important applications presented, COVID-19 remote monitoring, connected health, skin augmented intelligence, Finally, perspectives on future challenges new research opportunities also presented discussed.

Language: Английский

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Temperature-Responsive Ionic Conductive Hydrogel for Strain and Temperature Sensors

ACS Applied Materials & Interfaces, Journal Year: 2022, Volume and Issue: 14(23), P. 26536 - 26547

Published: June 3, 2022

Flexible wearable devices have achieved remarkable applications in health monitoring because of the advantages multisignal collecting and real-time wireless transmission information. However, integration bulky sensing elements rigid metal circuit components traditional may lead to a mechanical signal-conducting mismatch between biological tissues, thus restricting their wide human body. The excellent properties, conductivity, high tissue resemblance conductive hydrogel contribute its application flexible electronic sensors monitor health. In this work, dual-network, temperature-responsive ionic with stretchability, fast temperature responsiveness, good conductivity was developed by introducing polyvinylpyrrolidone (PVP)/ tannic acid (TA)/ Fe3+ cross-linked network into N,N-methylene diacrylamide (MBAA) poly(N-isopropylacrylamide-co-acrylamide) (P(NIPAAm-co-AM)) network. Furthermore, introduction PVP/TA/Fe3+ endowed stretchability conductivity. By adjusting molar ratio TA 3:5, maximal stretching 720% sensitive strain response (GF = 3.61) achieved, showing promising both large fine motions. Moreover, PNIPAAm lower critical solution (LCST), be used environmental through temperature–conductivity which can applied as sensor detect fever or hyperthermia

Language: Английский

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Hydrogels for Flexible Electronics

ACS Nano, Journal Year: 2023, Volume and Issue: 17(11), P. 9681 - 9693

Published: May 18, 2023

Hydrogels have emerged as promising materials for flexible electronics due to their unique properties, such high water content, softness, and biocompatibility. In this perspective, we provide an overview of the development hydrogels electronics, with a focus on three key aspects: mechanical interfacial adhesion, conductivity. We discuss principles designing high-performance present representative examples potential applications in field healthcare. Despite significant progress, several challenges remain, including improving antifatigue capability, enhancing balancing content wet environments. Additionally, highlight importance considering hydrogel-cell interactions dynamic properties future research. Looking ahead, is promising, exciting opportunities horizon, but continued investment research necessary overcome remaining challenges.

Language: Английский

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Stretchable, Adhesive, Self-Healable, and Conductive Hydrogel-Based Deformable Triboelectric Nanogenerator for Energy Harvesting and Human Motion Sensing

ACS Applied Materials & Interfaces, Journal Year: 2022, Volume and Issue: 14(7), P. 9126 - 9137

Published: Feb. 14, 2022

Hydrogels that combine the integrated attributes of being adhesive, self-healable, deformable, and conductive show great promise for next-generation soft robotic/energy/electronic applications. Herein, we reported a dual-network polyacrylamide (PAAM)/poly(acrylic acid) (PAA)/graphene (GR)/poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) (MAGP) hydrogel composed dual-cross-linked PAAM PAA as well PEDOT:PSS GR conducting component combines these features. A wearable strain sensor is fabricated by sandwiching MAGP hydrogels between two dielectric carbon nanotubes (CNTs)/poly(dimethylsiloxane) (PDMS) layers, which can be utilized to monitor delicate vigorous human motion. In addition, hydrogel-based act deformable triboelectric nanogenerator (D-TENG) harvesting mechanical energy. The D-TENG demonstrates peak output voltage current 141 V 0.8 μA, respectively. could easily light 52 yellow-light-emitting diodes (LEDs) simultaneously demonstrated capability power small electronics, such hygrometer thermometer. This work provides potential approach development energy sources self-powered sensors.

Language: Английский

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A review on the features, performance and potential applications of hydrogel-based wearable strain/pressure sensors

Advances in Colloid and Interface Science, Journal Year: 2021, Volume and Issue: 298, P. 102553 - 102553

Published: Oct. 27, 2021

Language: Английский

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Recent Progress of Conductive Hydrogel Fibers for Flexible Electronics: Fabrications, Applications, and Perspectives

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(17)

Published: Jan. 31, 2023

Abstract Flexible conductive materials with intrinsic structural characteristics are currently in the spotlight of both fundamental science and advanced technological applications due to their functional preponderances such as remarkable conductivity, excellent mechanical properties, tunable physical chemical so on. Typically, hydrogel fibers (CHFs) promising candidates owing unique including light weight, high length‐to‐diameter ratio, deformability, Herein, a comprehensive overview cutting‐edge advances CHFs involving architectural features, function characteristics, fabrication strategies, applications, perspectives flexible electronics provided. The design principles strategies systematically introduced discontinuous (the capillary polymerization draw spinning) continuous wet spinning, microfluidic 3D printing, electrospinning). In addition, potential crucially emphasized energy harvesting devices, storage smart sensors, biomedical electronics. This review concludes perspective on challenges opportunities attractive CHFs, allowing for better understanding fundamentals development materials.

Language: Английский

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Conductive polymer based hydrogels and their application in wearable sensors: a review

Materials Horizons, Journal Year: 2023, Volume and Issue: 10(8), P. 2800 - 2823

Published: Jan. 1, 2023

Hydrogels have been attracting increasing attention for application in wearable electronics, due to their intrinsic biomimetic features, highly tunable chemical-physical properties (mechanical, electrical, etc.), and excellent biocompatibility. Among many proposed varieties of hydrogels, conductive polymer-based hydrogels (CPHs) emerged as a promising candidate future sensor designs, with capability realizing desired features using different tuning strategies ranging from molecular design (with low length scale 10-10 m) micro-structural configuration (up 10-2 m). However, considerable challenges remain be overcome, such the limited strain sensing range mechanical strength, signal loss/instability caused by swelling/deswelling, significant hysteresis signals, de-hydration induced malfunctions, surface/interfacial failure during manufacturing/processing. This review aims offer targeted scan recent advancements CPH based technology, establishment dedicated structure-property relationships lab advanced manufacturing routes potential scale-up production. The CPHs sensors is also explored, suggested new research avenues prospects included.

Language: Английский

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