Collagen fiber-reinforced, tough and adaptive conductive organohydrogel e-skin for multimodal sensing applications

He, Zhen; Shen, Jialu; Lan, Maohua; Gu, Haibin

doi:10.1039/d4tb00374h

J. Mater. Chem. B

2024

DOI: 10.1039/d4tb00374h

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Collagen fiber-reinforced, tough and adaptive conductive organohydrogel e-skin for multimodal sensing applications

Zhen He,

Jialu Shen,

Maohua Lan

et al.

Abstract: The waste collagen fiber reinforced conductive organic hydrogel sensor (BPGC-Gly) is environmentally adaptable and multifunctional for multi-modal health monitoring via temperature, humidity, strain, pressure and bioelectrical signal acquisition.

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Cited by 3 publications

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Ca2+/ethanol driven in-situ integration of tough, antifreezing and conductive silk fibroin/polyacrylamide hydrogels for wearable sensors and electronic skin

Sun,

He,

Chen

et al. 2024

Chemical Engineering Journal

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Ca2+/ethanol driven in-situ integration of tough, antifreezing and conductive silk fibroin/polyacrylamide hydrogels for wearable sensors and electronic skin

Sun,

He,

Chen

et al. 2024

Chemical Engineering Journal

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Phytic acid-based super antifreeze multifunctional conductive hydrogel for human motion monitoring and energy harvesting devices

Wu,

Chang,

et al. 2024

Sustainable Materials and Technologies

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Recyclable Organic Ionic Conductive Hydrogels for Flexible Wearable Sensors with Excellent Environmental Resistance

Sun,

Li,

Zhang

et al. 2024

ACS Appl. Electron. Mater.

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Hydrogel sensors encounter limitations in practical applications due to factors such as a narrow operating temperature range, suboptimal mechanical properties, and limited recyclability. The development of hydrogelbased wearable sensors that can effectively operate in hot-wet or cold-dry environments remains a significant challenge. In this study, the PVA@CNF-FeCl 3 -CNT (PCFC) hydrogel, based on poly(vinyl alcohol) (PVA) and cellulose nanofibers (CNFs), was prepared using a one-pot cyclic freeze−thaw process and a binary solvent system instead of pure water. The PCFC strain/ pressure sensor exhibited remarkable characteristics including high sensitivity (S = 4.013% kPa −1 over a pressure range of 0−398 kPa), wide response range (7615 kPa), and exceptional durability (over 10,000 cycles), as well as short response time (83 ms) and recovery time (83 ms). It accurately detected various limb movements (e.g., finger flexion) and physiological signals (e.g., pulse) in real-time at both low (−25 °C) and high temperatures (50 °C). Furthermore, the PCFC organic hydrogels are fully reusable, owing to their construction based on noncovalent interactions and their remarkable thermoplasticity. This work presents a promising approach for utilizing hydrogel sensors as long-term wearable devices in extreme environments, while also addressing the recycling of waste hydrogel materials.

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Collagen fiber-reinforced, tough and adaptive conductive organohydrogel e-skin for multimodal sensing applications

Abstract: The waste collagen fiber reinforced conductive organic hydrogel sensor (BPGC-Gly) is environmentally adaptable and multifunctional for multi-modal health monitoring via temperature, humidity, strain, pressure and bioelectrical signal acquisition.

Cited by 3 publications

References 54 publications

Ca2+/ethanol driven in-situ integration of tough, antifreezing and conductive silk fibroin/polyacrylamide hydrogels for wearable sensors and electronic skin

Ca2+/ethanol driven in-situ integration of tough, antifreezing and conductive silk fibroin/polyacrylamide hydrogels for wearable sensors and electronic skin

Phytic acid-based super antifreeze multifunctional conductive hydrogel for human motion monitoring and energy harvesting devices

Recyclable Organic Ionic Conductive Hydrogels for Flexible Wearable Sensors with Excellent Environmental Resistance

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