Smart versatile hydrogels tailored by metal-phenolic coordinating carbon and polypyrrole for soft actuation, strain sensing and writing recognition

Wang, Juan; Du, Peng; Hsu, Yu-I; Uyama, Hiroshi

doi:10.1016/j.cej.2024.152671

Chemical Engineering Journal

2024

DOI: 10.1016/j.cej.2024.152671

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Smart versatile hydrogels tailored by metal-phenolic coordinating carbon and polypyrrole for soft actuation, strain sensing and writing recognition

Juan Wang,

Peng Du,

Yu-I Hsu

et al.

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Cited by 4 publications

References 63 publications

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Skin‐Mountable Thermo‐responsive Structured Hydrogel for Optical and Adhesion Coupled Functional Sensing

Xu,

Lyu,

Liu

et al. 2025

Small

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Smart hydrogel sensors with intrinsic responsiveness, such as pH, temperature, humidity, and other external stimuli, possess broad applications in innumerable fields such as biomedical diagnosis, environmental monitoring, and wearable electronics. However, it remains a great challenge to develop wearable structural hydrogels that possess simultaneously body temperature‐responsive, adhesion‐adaptable, and transparency‐tunable. Herein, an innovative skin‐mountable thermo‐responsive hydrogel is fabricated, which endows tunable optical properties and switchable adhesion properties at different temperatures. Interestingly, it is able to exhibit lower critical solution temperature (LCST) to adapt to the human body temperature by altering the acrylic acid(AAc) content in the hydrogel network. The hydrogel also displays high transparency and strong adhesion at low temperatures, while it becomes opaque and feeble adhesion at high temperatures. Furthermore, a wearable and highly sensitive hydrogel sensor array structure is constructed by harnessing vat photopolymerization three‐dimensional (3D) printing. As a proof of concept, a wearable hydrogel sensor attached to the back of the human hand is capable of detecting simultaneously temperature and strain differences, and also integrating high‐temperature monitoring and alarm functions with visual transparency alteration. This work provides an advanced manner to fabricate structured responsive hydrogels, which have potential application prospects in the field of smart medical patches and wearable devices.

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Skin‐Mountable Thermo‐responsive Structured Hydrogel for Optical and Adhesion Coupled Functional Sensing

Xu,

Lyu,

Liu

et al. 2025

Small

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Modification of physicochemical, antioxidant, and antibacterial properties of chitosan film with curcumin-loaded TA/Fe nanoparticles

Mao,

Zeng,

Ren

et al. 2025

Food Hydrocolloids

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High-performance supercapacitors based on coarse nanofiber bundle and ordered network hydrogels

Chen,

Ju,

Zhang

et al. 2025

International Journal of Biological Macromolecules

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Smart versatile hydrogels tailored by metal-phenolic coordinating carbon and polypyrrole for soft actuation, strain sensing and writing recognition

Cited by 4 publications

References 63 publications

Skin‐Mountable Thermo‐responsive Structured Hydrogel for Optical and Adhesion Coupled Functional Sensing

Skin‐Mountable Thermo‐responsive Structured Hydrogel for Optical and Adhesion Coupled Functional Sensing

Modification of physicochemical, antioxidant, and antibacterial properties of chitosan film with curcumin-loaded TA/Fe nanoparticles

High-performance supercapacitors based on coarse nanofiber bundle and ordered network hydrogels

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