Bio-inspired, robust, and anti-swelling hydrogel sensors for underwater information transmission

Pan, Shenxin; Xiang, Changzheng; Liu, Zhendong; Tong, Gangsheng; Zhang, Chongyin; Zhu, Xinyuan

doi:10.1039/d4tc00397g

J. Mater. Chem. C

2024

DOI: 10.1039/d4tc00397g

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Bio-inspired, robust, and anti-swelling hydrogel sensors for underwater information transmission

Shenxin Pan,

Changzheng Xiang,

Zhendong Liu

et al.

Abstract: Hydrogel-based sensors commonly manifest pronounced swelling in aqueous milieus, a phenomenon that can precipitate deterioration of mechanical performance and distortion in output signals, thereby markedly constraining their expansive applicability. Drawing...

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Cited by 3 publications

References 41 publications

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Emerging Combination of Hydrogel and Electrochemical Biosensors

Huang,

Zhou,

et al. 2024

Small

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Electrochemical sensors are among the most promising technologies for biomarker research, with outstanding sensitivity, selectivity, and rapid response capabilities that make them important in medical diagnostics and prognosis. Recently, hydrogels have gained attention in the domain of electrochemical biosensors because of their superior biocompatibility, excellent adhesion, and ability to form conformal contact with diverse surfaces. These features provide distinct advantages, particularly in the advancement of wearable biosensors. This review examines the contemporary utilization of hydrogels in electrochemical sensing, explores strategies for optimization and prospective development trajectories, and highlights their distinctive advantages. The objective is to provide an exhaustive overview of the foundational principles of electrochemical sensing systems, analyze the compatibility of hydrogel properties with electrochemical methodologies, and propose potential healthcare applications to further illustrate their applicability. Despite significant advances in the development of hydrogel‐based electrochemical biosensors, challenges persist, such as improving material fatigue resistance, interfacial adhesion, and maintaining balanced water content across various environments. Overall, hydrogels have immense potential in flexible biosensors and provide exciting opportunities. However, resolving the current obstacles will necessitate additional research and development efforts.

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Emerging Combination of Hydrogel and Electrochemical Biosensors

Huang,

Zhou,

et al. 2024

Small

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A multifunctional flexible wearable hydrogel sensor with anti-swelling via supramolecular interactions for underwater motion detection and information transmission

Lei,

Duan,

Zhao

et al. 2025

Chemical Engineering Journal

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Synergistic Effects of Radical Distributions of Soluble and Insoluble Polymers within Electrospun Nanofibers for an Extending Release of Ferulic Acid

Dong,

Gong,

Guo

et al. 2024

Polymers

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Polymeric composites for manipulating the sustained release of an encapsulated active ingredient are highly sought after for many practical applications; particularly, water-insoluble polymers and core–shell structures are frequently explored to manipulate the release behaviors of drug molecules over an extended time period. In this study, electrospun core–shell nanostructures were utilized to develop a brand-new strategy to tailor the spatial distributions of both an insoluble polymer (ethylcellulose, EC) and soluble polymer (polyvinylpyrrolidone, PVP) within the nanofibers, thereby manipulating the extended-release behaviors of the loaded active ingredient, ferulic acid (FA). Scanning electron microscopy and transmission electron microscopy assessments revealed that all the prepared nanofibers had a linear morphology without beads or spindles, and those from the coaxial processes had an obvious core–shell structure. X-ray diffraction and attenuated total reflectance Fourier transform infrared spectroscopic tests confirmed that FA had fine compatibility with EC and PVP, and presented in all the nanofibers in an amorphous state. In vitro dissolution tests indicated that the radical distributions of EC (decreasing from shell to core) and PVP (increasing from shell to core) were able to play their important role in manipulating the release behaviors of FA elaborately. On one hand, the core–shell nanofibers F3 had the advantages of homogeneous composite nanofibers F1 with a higher content of EC prepared from the shell solutions to inhibit the initial burst release and provide a longer time period of sustained release. On the other hand, F3 had the advantages of nanofibers F2 with a higher content of PVP prepared from the core solutions to inhibit the negative tailing-off release. The key element was the water permeation rates, controlled by the ratios of soluble and insoluble polymers. The new strategy based on core–shell structure paves a way for developing a wide variety of polymeric composites with heterogeneous distributions for realizing the desired functional performances.

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Bio-inspired, robust, and anti-swelling hydrogel sensors for underwater information transmission

Abstract: Hydrogel-based sensors commonly manifest pronounced swelling in aqueous milieus, a phenomenon that can precipitate deterioration of mechanical performance and distortion in output signals, thereby markedly constraining their expansive applicability. Drawing...

Cited by 3 publications

References 41 publications

Emerging Combination of Hydrogel and Electrochemical Biosensors

Emerging Combination of Hydrogel and Electrochemical Biosensors

A multifunctional flexible wearable hydrogel sensor with anti-swelling via supramolecular interactions for underwater motion detection and information transmission

Synergistic Effects of Radical Distributions of Soluble and Insoluble Polymers within Electrospun Nanofibers for an Extending Release of Ferulic Acid

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