Balancing the mechanical, electronic, and self-healing properties in conductive self-healing hydrogel for wearable sensor applications

Materials Horizons, Journal Year: 2021, Volume and Issue: 8(6), P. 1795 - 1804

Published: Jan. 1, 2021

Dynamic interfacial interactions between the HAPAA and PANI hydrogels are favorable for self-healing; thus, network can enhance mechanical electronic properties of hydrogel without compromising its self-healing performance.

Language: Английский

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Multifunctional conductive hydrogels and their applications as smart wearable devices

Journal of Materials Chemistry B, Journal Year: 2021, Volume and Issue: 9(11), P. 2561 - 2583

Published: Jan. 1, 2021

Recently, hydrogel-based conductive materials and their applications as smart wearable devices have been paid tremendous attention due to high stretchability, flexibility, excellent biocompatibility. Compared with single functional hydrogels, multifunctional hydrogels are more advantageous match various demands for practical applications. This review focuses on applied devices. Representative strategies conduction of discussed firstly: (1) electronic based the fillers (2) ionic charged ions. Then, common intensive research multiple functionalities such mechanical properties, sensory anti-freezing moisturizing adhesion self-healing properties is presented. The in human motion sensors, skins, personal healthcare diagnosis provided third part. Finally, we offer our perspective open challenges future areas interest used

Language: Английский

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Recent advances in designing conductive hydrogels for flexible electronics

InfoMat, Journal Year: 2020, Volume and Issue: 2(5), P. 843 - 865

Published: April 7, 2020

Abstract Flexible electronics have emerged as an exciting research area in recent years, serving ideal interfaces bridging biological systems and conventional electronic devices. can not only collect physiological signals for human health monitoring but also enrich our daily life with multifunctional smart materials Conductive hydrogels (CHs) become promising candidates the fabrication of flexible owing to their biocompatibility, adjustable mechanical flexibility, good conductivity, multiple stimuli‐responsive properties. To achieve on‐demand properties such stretchability, compressibility, elasticity, rational design polymer networks via modulating chemical physical intermolecular interactions is required. Moreover, type conductive components (eg, electron‐conductive materials, ions) incorporation method play important role conductivity CHs. Electron‐CHs usually possess excellent while ion‐CHs are generally transparent generate ion gradients within hydrogel matrices. This mini review focuses on advances CHs, introducing various strategies electron‐CHs employed highlighting versatile applications biosensors, batteries, supercapacitors, nanogenerators, actuators, touch panels, displays. image

Language: Английский

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Self-powered integrated system of a strain sensor and flexible all-solid-state supercapacitor by using a high performance ionic organohydrogel

Materials Horizons, Journal Year: 2020, Volume and Issue: 7(8), P. 2085 - 2096

Published: Jan. 1, 2020

A self-powered integrated strain sensor system which could be attached to the human body detect motion was developed.

Language: Английский

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Stimuli-responsive conductive hydrogels: design, properties, and applications

Materials Chemistry Frontiers, Journal Year: 2021, Volume and Issue: 5(5), P. 2092 - 2123

Published: Jan. 1, 2021

This article discusses the preparation, performance, applications, and future research directions of stimuli-responsive conductive hydrogels.

Language: Английский

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Recent advances in polysaccharide-based self-healing hydrogels for biomedical applications

Carbohydrate Polymers, Journal Year: 2022, Volume and Issue: 283, P. 119161 - 119161

Published: Jan. 25, 2022

Language: Английский

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Dual Conductive Network Hydrogel for a Highly Conductive, Self-Healing, Anti-Freezing, and Non-Drying Strain Sensor

ACS Applied Polymer Materials, Journal Year: 2020, Volume and Issue: 2(2), P. 996 - 1005

Published: Jan. 10, 2020

Self-healing hydrogel plays an important role in flexible sensors. However, the development of high-performance hydrogel-based strain sensors with both high sensitivity and large sensing range remains a key challenge. Herein, we prepare dual conductive network (DCN) based on carbon nanotube (CNT) film that exhibits high-conductivity, self-healing, anti-freezing, non-drying features. The tolerance this to extreme temperatures is improved via simple solvent replacement, enabling DCN maintain flexibility stretchability under arduous conditions such as ranging from −85 50 °C. Additionally, owing percolation structure, sensor gauge factor 343 at 110%, indicating sensitivity. mechanical electrical performances would be efficiently self-repaired after heating–cooling treatment. self-healing can mounted human body detect biosignals real time. Our work shows method fabricating for future electronics.

Language: Английский

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Hydro/Organo/Ionogels: “Controllable” Electromagnetic Wave Absorbers

Advanced Materials, Journal Year: 2022, Volume and Issue: 34(43)

Published: Sept. 6, 2022

Demand for electromagnetic wave (EMW) absorbers continues to increase with technological advances in wearable electronics and military applications. In this study, a new strategy overcome the drawbacks of current by employing co-contribution functional polymer frameworks liquids strong EMW absorption properties is proposed. Strongly polar water, dimethyl sulfoxide/water mixtures, highly conductive 1-ethyl-3-methylimidazolium ethyl sulfate ([EMI][ES]) are immobilized dielectrically inert networks form different classes gels (hydrogels, organogels, ionogels). These demonstrate high correlation between their dielectric polarity/ionic conductivity/non-covalent interaction liquids. Thus, performances can be precisely tuned over wide range due diversity stability The prepared hydrogels show good shielding performance (shielding efficiency > 20 dB) constants, while organogels moderate attenuation ability impedance matching achieve full-wave X-band (8.2-12.4 GHz) at 2.5 ± 0.5 mm. ionogels also offer effective bandwidth (10.79-16.38 GHz 2.2 mm) via prominent ionic conduction loss. short, work provides conceptually novel platform develop high-efficient, customizable, low-cost absorbers.

Language: Английский

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Mussel-inspired nanozyme catalyzed conductive and self-setting hydrogel for adhesive and antibacterial bioelectronics

Bioactive Materials, Journal Year: 2021, Volume and Issue: 6(9), P. 2676 - 2687

Published: Feb. 15, 2021

Adhesive hydrogels have broad applications ranging from tissue engineering to bioelectronics; however, fabricating adhesive with multiple functions remains a challenge. In this study, mussel-inspired tannic acid chelated-Ag (TA-Ag) nanozyme peroxidase (POD)-like activity was designed by the in situ reduction of ultrasmall Ag nanoparticles (NPs) TA. The TA-Ag exhibited high catalytic induce hydrogel self-setting without external aid. retained abundant phenolic hydroxyl groups and maintained dynamic redox balance phenol-quinone, providing long-term repeatable adhesiveness, similar adhesion mussels. also afforded uniform distribution network, thereby improving its mechanical properties conductivity. Furthermore, endowed antibacterial through synergistic effects reactive oxygen species generated via POD-like reactions intrinsic bactericidal Ag. Owing these advantages, nanozyme-catalyzed could be effectively used as an adhesive, antibacterial, implantable bioelectrode detect bio-signals, wound dressing accelerate regeneration while preventing infection. Therefore, study provides promising approach for fabrication bioelectronics catalysis.

Language: Английский

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Highly stretchable, self-adhesive, biocompatible, conductive hydrogels as fully polymeric strain sensors

Journal of Materials Chemistry A, Journal Year: 2020, Volume and Issue: 8(39), P. 20474 - 20485

Published: Jan. 1, 2020

A new fully polymeric conductive hydrogel sensor with IPN structure was developed, which achieved ultra-high stretchability, strong surface adhesion, and high sensing stability in response to both large subtle human movements.

Language: Английский

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