Carbon nanotubes reinforced hydrogel as flexible strain sensor with high stretchability and mechanically toughness

Chemical Engineering Journal, Journal Year: 2019, Volume and Issue: 382, P. 122832 - 122832

Published: Sept. 13, 2019

Language: Английский

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Mussel‐Inspired Hydrogels for Self‐Adhesive Bioelectronics

Advanced Functional Materials, Journal Year: 2020, Volume and Issue: 30(25)

Published: April 20, 2020

Abstract Wearable and implantable bioelectronics are receiving a great deal of attention because they offer huge promise in personalized healthcare. Currently available generally rely on external aids to form an attachment the human body, which leads unstable performance practical applications. Self‐adhesive highly desirable for ameliorating these concerns by offering reliable conformal contact with tissue, stability fidelity signal detection. However, achieving adequate long‐term self‐adhesion soft wet biological tissues has been daunting challenge. Recently, mussel‐inspired hydrogels have emerged as promising candidates design self‐adhesive bioelectronics. In addition self‐adhesiveness, chemistry offers unique pathway integrating multiple functional properties all‐in‐one bioelectronic devices, implications healthcare this report, recent progress area is highlighted specifically discussing: 1) adhesion mechanism mussels, 2) repeatable adhesion, 3) advance development hydrogel reconciling self‐adhesiveness additional including conductivity, toughness, transparency, self‐healing, antibacterial properties, tolerance extreme environment, 4) challenges prospects future

Language: Английский

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Development of Conductive Hydrogels for Fabricating Flexible Strain Sensors

Small, Journal Year: 2021, Volume and Issue: 18(5)

Published: Oct. 17, 2021

Abstract Conductive hydrogels can be prepared by incorporating various conductive materials into polymeric network hydrogels. In recent years, have been developed and applied in the field of strain sensors owing to their unique properties, such as electrical conductivity, mechanical self‐healing, anti‐freezing properties. These remarkable properties allow hydrogel‐based show excellent performance for identifying external stimuli detecting human body movement, even at subzero temperatures. This review summarizes application fabrication working different modes. Finally, a brief prospectus development future is provided.

Language: Английский

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Multifunctional conductive hydrogel-based flexible wearable sensors

TrAC Trends in Analytical Chemistry, Journal Year: 2020, Volume and Issue: 134, P. 116130 - 116130

Published: Nov. 26, 2020

Language: Английский

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Highly tough supramolecular double network hydrogel electrolytes for an artificial flexible and low-temperature tolerant sensor

Journal of Materials Chemistry A, Journal Year: 2020, Volume and Issue: 8(14), P. 6776 - 6784

Published: Jan. 1, 2020

This work provides a novel and simple way to prepare hydrogel electrolytes with eminent toughness, high conductivity anti-freezing properties.

Language: Английский

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Functional Conductive Hydrogels for Bioelectronics

ACS Materials Letters, Journal Year: 2020, Volume and Issue: 2(10), P. 1287 - 1301

Published: Aug. 25, 2020

Conductive hydrogels are widely used in various applications, such as artificial skin, flexible and implantable bioelectronics, tissue engineering. However, it is still a challenge to formulate with high electrical conductivity without compromising their physicochemical properties (e.g., toughness, stretchability, biocompatibility). Additionally, incorporating other functions, self-healing, shape memory, wet adhesion, into conductive critical many practical applications of hydrogel bioelectronics. In this Review, we highlight recent progress the development functional hydrogels. We, then, discuss potential challenges faced by areas wearable/implantable electronics cell/tissue can serve an important building block for bioelectronic devices personalized healthcare bioengineering areas.

Language: Английский

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MXene‐Based Conductive Organohydrogels with Long‐Term Environmental Stability and Multifunctionality

Advanced Functional Materials, Journal Year: 2020, Volume and Issue: 30(48)

Published: Sept. 18, 2020

Abstract Conductive hydrogels are promising interface materials utilized in bioelectronics for human–machine interactions. However, the low‐temperature induced freezing problem and water evaporation‐induced structural failures have significantly hindered their practical applications. To address these problems, herein, an elaborately designed nanocomposite organohydrogel is fabricated by introducing highly conductive MXene nanosheets into a tannic acid‐decorated cellulose nanofibrils/polyacrylamide hybrid gel network infiltrated with glycerol (Gly)/water binary solvent. Owing to introduction of Gly, as‐prepared demonstrates outstanding flexibility electrical conductivity under wide temperature spectrum (from −36 60 °C), exhibits long‐term stability open environment (>7 days). Additionally, dynamic catechol‐borate ester bonds, along readily formed hydrogen bonds between Gly molecules, further endow excellent stretchability (≈1500% strain), high tissue adhesiveness, self‐healing properties. The favorable environmental broad working strain range (≈500% strain); together sensitivity (gauge factor 8.21) make this candidate both large subtle motion monitoring.

Language: Английский

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From Diagnosis to Treatment: Recent Advances in Patient-Friendly Biosensors and Implantable Devices

ACS Nano, Journal Year: 2021, Volume and Issue: 15(2), P. 1960 - 2004

Published: Feb. 3, 2021

Patient-friendly medical diagnostics and treatments have been receiving a great deal of interest due to their rapid cost-effective health care applications with minimized risk infection, which has the potential replace conventional hospital-based procedures. In particular, integration recently developed materials into devices allows development point-of-care (POC) sensing platforms implantable special functionalities. this review, recent advances in biosensors for patient-friendly diagnosis treatment are discussed. Comprehensive analysis portable wearable biosensing monitoring disease is provided, including topics such as selection, device structure integration, biomarker detection strategies. Moreover, specific challenges related each biological fluid biosensor-based POC presented. Also, devices, wireless communication strategies, Furthermore, various surgical approaches reviewed, minimally invasive insertion mounting, vivo electrical optical modulations, post-operation monitoring. Finally, future perspectives toward provided.

Language: Английский

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Recent Progress in Natural Biopolymers Conductive Hydrogels for Flexible Wearable Sensors and Energy Devices: Materials, Structures, and Performance

ACS Applied Bio Materials, Journal Year: 2020, Volume and Issue: 4(1), P. 85 - 121

Published: Aug. 17, 2020

Natural biopolymer-based conductive hydrogels, which combine inherent renewable, nontoxic features, biocompatibility and biodegradability of biopolymers, excellent flexibility conductivity exhibit great potential in applications wearable stretchable sensing devices. Compared to traditional flexible substrates deriving from petro-materials-derived polymers, hydrogels consisting continuous cross-linked polymer networks a large amount water more fantastic combination stretchability because their endow the with mechanical offers them consecutive ionic transport property. Different biopolymers that are extracted bioresource intrinsic commonly considered as appropriate candidates for constructing For example, such cellulose, chitosan, silk fibroin usually chosen promising construct endowing enhanced properties remarkable biocompatibility. This review summarizes recent progress natural utilized electrical devices series typical including fibroin, gelatin. The chemical structures physicochemical four demonstrated, diverse hydrogel sensors discussed detail. Finally, remaining challenges expectations discussed.

Language: Английский

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Conductive Hydrogel‐Based Electrodes and Electrolytes for Stretchable and Self‐Healable Supercapacitors

Advanced Functional Materials, Journal Year: 2021, Volume and Issue: 31(24)

Published: April 9, 2021

Abstract Stretchable self‐healing supercapacitors (SCs) can operate under extreme deformation and restore their initial properties after damage with considerably improved durability reliability, expanding opportunities in numerous applications, including smart wearable electronics, bioinspired devices, human–machine interactions, etc. It is challenging, however, to achieve mechanical stretchability self‐healability energy storage technologies, wherein the key issue lies exploitation of ideal electrode electrolyte materials exceptional ability besides conductivity. Conductive hydrogels (CHs) possess unique hierarchical porous structure, high electrical/ionic conductivity, broadly tunable physical chemical through molecular design structure regulation, holding tremendous promise for stretchable SCs. Hence, this review innovatively constructed a focus on CH based electrodes electrolytes First, common synthetic approaches CHs are introduced; then stretching strategies involved systematically elaborated; followed by an explanation conductive mechanism CHs; focusing CH‐based SCs; subsequently, application SCs electronics discussed; finally, conclusion drawn along views challenges future research directions regarding field

Language: Английский

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