Graphene oxide-based composite organohydrogels with high strength and low temperature resistance for strain sensors

Zhao, Rui; Jiang, Lulu; Zhang, Ping; Li, Dan; Guo, Zhenzhong; Hu, Liang

doi:10.1039/d1sm01655e

Cited by 14 publications

(5 citation statements)

References 29 publications

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“…This surface is rougher than typical, which helps to increase the surface area. By boosting ion transport and polymer chain mobility, it will improve the self-healing ability of hydrogels ( Khan et al, 2021d ; Zhao et al, 2022 ). It was also observed that increasing TEOS amount caused GO to cause more GO clustering at 300 µm as presented with red arrows.…”

Section: Resultsmentioning

confidence: 99%

Multifunctional Arabinoxylan-functionalized-Graphene Oxide Based Composite Hydrogel for Skin Tissue Engineering

Khan

Razak

Hassan

et al. 2022

Front. Bioeng. Biotechnol.

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Wound healing is an important physiological process involving a series of cellular and molecular developments. A multifunctional hydrogel that prevents infection and promotes wound healing has great significance for wound healing applications in biomedical engineering. We have functionalized arabinoxylan and graphene oxide (GO) using the hydrothermal method, through cross-linking GO-arabinoxylan and polyvinyl alcohol (PVA) with tetraethyl orthosilicate (TEOS) to get multifunctional composite hydrogels. These composite hydrogels were characterized by FTIR, SEM, water contact angle, and mechanical testing to determine structural, morphological, wetting, and mechanical behavior, respectively. Swelling and biodegradation were also conducted in different media. The enhanced antibacterial activities were observed against different bacterial strains (E. coli, S. aureus, and P. aeruginosa); anticancer activities and biocompatibility assays were found effective against U-87 and MC3T3-E1 cell lines due to the synergic effect of hydrogels. In vivo activities were conducted using a mouse full-thickness skin model, and accelerated wound healing was found without any major inflammation within 7 days with improved vascularization. From the results, these composite hydrogels might be potential wound dressing materials for biomedical applications.

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Section: Resultsmentioning

confidence: 99%

Multifunctional Arabinoxylan-functionalized-Graphene Oxide Based Composite Hydrogel for Skin Tissue Engineering

Khan

Razak

Hassan

et al. 2022

Front. Bioeng. Biotechnol.

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“…In recent years, artificial intelligence has gradually been becoming a quite hot research area and is regarded as the core technology leading the fourth industrial revolution, which means that human labor can be replaced in principle by intelligent robots. Flexible strain sensors can be integrated into machines as a sensing element for machine perception, and human-robot interaction [53,[210][211][212][213][214][215][216][217][218][219][220], which is crucial for Industry 4.0. Recently, Zhao et al [54] reported a flexible thin-film e-skin composed of CNTs/PDMS composite film with layered structure and interdigital electrode.…”

Section: Human-machine Interactionmentioning

confidence: 99%

0D to 2D carbon-based materials in flexible strain sensors: recent advances and perspectives

Liu

Zhang

et al. 2023

2D Mater.

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In the past decade, flexible strain sensors have attracted much attention in the fields of health care, soft robots and other flexible electronics due to their unique flexibility, high stability, and strong mechanical properties. To further meet the requirements of the excellent performance for electronic equipment, carbon-based conductive sensitive materials have become one of the first choice for the preparation of flexible strain sensors due to their excellent electrical conductivity, mechanical properties, and high compatibility. Herein, based on different strain behaviors, this paper analyzes the working mechanism of tensile and compressive strain sensors, focusing on the latest research progress of carbon-based conductive materials in strain sensors with different dimensions. The applications of carbon-based sensitive materials with multifunctional strain sensing in the areas of physiological information detection, human motion, human-machine interaction, and visual display have also been summarized. Furthermore, it has been attempted to discuss the current challenges of carbon-based strain sensors as well as the prospect of flexible strain sensors. This review is aimed to provide appropriate references for further exploitation of multi-functional flexible carbon-based strain sensors.

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“…[3,4] The utility of these materials lies in their ability to potentially facilitate the creation of smart wearable skin-on devices for high precision, real-time biomechanical and vital signs measurements. [5,6] Past research on utilizing the electromechanical response of graphene networks has demonstrated composite materials in many forms; from mixed-phase solid films, [7][8][9] foams, [10][11][12] fibers, [13,14] fabrics, [15][16][17] gels, [18][19][20] to micro structured [21][22][23] and templated [17,24,25] heterostructures. The popularity of applying graphene nanocomposites lay in the cost efficiency associated with making nanosheets in the liquid phase and the cheap polymer materials applied to fabricate devices.…”

Section: Introductionmentioning

confidence: 99%

Smart Skins Based on Assembled Piezoresistive Networks of Sustainable Graphene Microcapsules for High Precision Health Diagnostics

Aljarid,

Dong,

et al. 2023

Adv Funct Materials

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The environmental impact of plastic waste has had a profound effect on our livelihoods and there is a need for future plastic‐based epidermal electronics to trend toward more sustainable approaches. Infusing graphene into the culinary process of seaweed spherification produces core‐shell, food‐based nanocomposites with properties exhibiting a remarkably high degree of tunability. Unusually, mechanical, electrical, and electromechanical metrics all became decoupled from one another, allowing for each to be individually tuned. This leads to the formation of a general electromechanical model which presents a universal electronic blueprint for enhanced performances. Through this model, performance optimization and system miniaturization are enabled, with gauge factors (G) >108 for capsule diameters (D) ≈290 µm and produced at a record rate of >100 samples per second. When coalesced into quasi‐2D planar networks, microcapsules form the basis of discrete, recyclable electronic smart skins with areal independent sensitives for muscular, breathing, pulse, and blood pressure measurements in real‐time.

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Graphene oxide-based composite organohydrogels with high strength and low temperature resistance for strain sensors

Abstract: In the recent years, a rapid development of the polymeric hydrogel-based sensors has been witnessed. However, conventional hydrogels often exhibit poor mechanical properties. Additionally, the use of these sensors at...

Cited by 14 publications

References 29 publications

Multifunctional Arabinoxylan-functionalized-Graphene Oxide Based Composite Hydrogel for Skin Tissue Engineering

Multifunctional Arabinoxylan-functionalized-Graphene Oxide Based Composite Hydrogel for Skin Tissue Engineering

0D to 2D carbon-based materials in flexible strain sensors: recent advances and perspectives

Smart Skins Based on Assembled Piezoresistive Networks of Sustainable Graphene Microcapsules for High Precision Health Diagnostics

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