Transparent multifunctional cellulose-based conductive hydrogel for wearable strain sensors and arrays

Gao, Jianliang; Li, Xiaomeng; Xu, Lina; Yan, Manqing; Bi, Hong; Wang, Qiyang

doi:10.1016/j.carbpol.2024.121784

Carbohydrate Polymers

2024

DOI: 10.1016/j.carbpol.2024.121784

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Transparent multifunctional cellulose-based conductive hydrogel for wearable strain sensors and arrays

Jianliang Gao,

Xiaomeng Li,

Lina Xu

et al.

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Cited by 28 publications

References 54 publications

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Nucleobase‐Driven Wearable Ionogel Electronics for Long‐Term Human Motion Detection and Electrophysiological Signal Monitoring

Yan,

Zhao,

Lin

et al. 2024

Adv Funct Materials

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Ionogels are considered as ideal candidates for constructing flexible electronics due to their superior electrical conductivity, flexibility, high thermal and electrochemical stability. However, it remains a great challenge to simultaneously achieve high sensitivity, repeated adhesion, good self‐healing, and biocompatibility through a straightforward strategy. Herein, inspired by nucleobase‐tackified strategy, a multifunctional adhesive ionogel is developed through one‐step radical polymerization of acrylated adenine/uracil (Aa/Ua) and acrylic acid (AA) monomers in sodium caseinate (SC) stabilized liquid metal dispersions. As a soft conductive filler, the incorporating of liquid metal not only improves the electrical conductivity, but also enhances the mechanical strength, satisfying the stretchable sensing application. The large amount of noncovalent interactions (hydrogen bonding, metal coordination, and ion‐dipole interactions) within the networks enable the ionogels to possess excellent stretchability, skin‐like softness, good self‐healing, and strong adhesion. Based on these desirable characteristics, the ionogel is suitable for wearable strain sensors to precisely detect diverse human movements under extreme environments. Moreover, the seamless adhesion with human skin allows the ionogel to function as bioelectrode patch for long‐term and high‐quality electrophysiological signal acquisition. This research provides a promising strategy for designing ionogels with tailored functionalities for wearable electronics that satisfy diverse application requirements.

show abstract

Nucleobase‐Driven Wearable Ionogel Electronics for Long‐Term Human Motion Detection and Electrophysiological Signal Monitoring

Yan,

Zhao,

Lin

et al. 2024

Adv Funct Materials

View full text Add to dashboard Cite

show abstract

Modulation and Mechanisms of Cellulose‐Based Hydrogels for Flexible Sensors

Zhang,

Xu,

Liu

et al. 2024

SusMat

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Flexible sensors exhibit the properties of excellent shape adaptability and deformation ability, which have been applied for environmental monitoring, medical diagnostics, food safety, smart systems, and human–computer interaction. Cellulose‐based hydrogels are ideal materials for the fabrication of flexible sensors due to their unique three‐dimensional structure, renewability, ease of processing, biodegradability, modifiability, and good mechanical properties. This paper comprehensively reviews recent advances of cellulose‐based hydrogels in the construction of flexible sensor applications. The characteristics, mechanisms, and advantages of cellulose‐based hydrogels prepared by physical cross‐linking, chemical cross‐linking are respectively analyzed and summarized in detail. The focus then turns to the research and development in cellulose‐based hydrogel sensors, including physical sensing (pressure/strain, humidity/temperature, and optical sensing), chemical sensing (chromium, copper, and mercury ion sensing, toxic gas sensing, nitrite sensing), and biosensing (glucose, antibody, and cellular sensing). Additionally, the limitations of cellulose‐based hydrogels in sensors, along with key challenges and future directions, are discussed. It is anticipated that this review will furnish invaluable insight for the advancement of novel green, flexible sensors and facilitate the integration of cellulose‐based hydrogels as a fundamental component in the development of multifunctional sensing technologies, thereby expediting the design of innovative materials in the near future.

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Wide-humidity, anti-freezing and stretchable multifunctional conductive carboxymethyl cellulose-based hydrogels for flexible wearable strain sensors and arrays

Cui,

Wang,

Zheng

et al. 2024

Carbohydrate Polymers

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Transparent multifunctional cellulose-based conductive hydrogel for wearable strain sensors and arrays

Cited by 28 publications

References 54 publications

Nucleobase‐Driven Wearable Ionogel Electronics for Long‐Term Human Motion Detection and Electrophysiological Signal Monitoring

Nucleobase‐Driven Wearable Ionogel Electronics for Long‐Term Human Motion Detection and Electrophysiological Signal Monitoring

Modulation and Mechanisms of Cellulose‐Based Hydrogels for Flexible Sensors

Wide-humidity, anti-freezing and stretchable multifunctional conductive carboxymethyl cellulose-based hydrogels for flexible wearable strain sensors and arrays

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