Bio-inspired, Super-stretchable and Self-adhesive Hybrid Hydrogel with SC-PDA/GO-Ca2+/PAM Framework for High Precision Wearable Sensors

Zhou, Jian, Zhuo, Fengling, Long, Xinxin, Liu, Ying, Lu, Haibao, Luo, Jikui, Chen, Lei, Dong, Shurong, Fu, Yong Qing and Duan, Huigao (2022) Bio-inspired, Super-stretchable and Self-adhesive Hybrid Hydrogel with SC-PDA/GO-Ca2+/PAM Framework for High Precision Wearable Sensors. Chemical Engineering Journal, 447. p. 137259. ISSN 1385-8947

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Flexible sensors which are highly stretchable, sensitive, and self-adhesive are critically required for wearable electronics, personalized healthcare monitoring and electronic skins. Conductive hydrogel-based sensors hold great promises for this purpose. However, it remains a critical challenge to integrate all the critical functions (e.g., remarkable stretchability, high sensitivity, and self-adhesiveness) into one hydrogel. Here, we propose a bio-inspired hybrid hydrogel framework with a hierarchical configuration that incorporates sodium casein, polydopamine, calcium chloride, and graphene oxide into a polyacrylamide hydrogel. Multiple interpenetrating network architectures and their strong interactions provide superior stretchability of 10,300%, high strain sensitivity with a gauge factor of 13.45 over a broad strain range, robust adhesiveness, fast responsiveness, and excellent reproducibility. This hydrogel-based wearable sensor demonstrates outstanding sensing performance in detecting, quantifying, and remotely monitoring human motions through integration into a cloud platform. A durable glove is further developed using the hybrid hydrogel for wirelessly controlling synchronized motions of a manipulator and accurately recognizing hand gestures. This hybrid hydrogel has shown wide-range applications in fields including wearable electronics, human–machine interfaces, and electronic skins.

Item Type: Article
Additional Information: Funding information: This work was supported by the NSFC (No.52075162), The Innovation Leading Program of New and High-tech Industry of Hunan Province(2020GK2015), The Joint Fund Project of the Ministry of Education, The Excellent Youth Fund of Hunan Province (2021JJ20018), the Key Research & Development Program of Guangdong Province (2020B0101040002), the Natural Science Foundation of Changsha (kq2007026), The NSFC-Zhejiang Joint Fund for the Integration of Industrialization and information(No.U20A20172,U1909212), and the Engineering Physics and Science Research Council of UK (EPSRC EP/P018998/1) and International Exchange Grant (IEC/NSFC/201078) through Royal Society and the NSFC.
Uncontrolled Keywords: wearable sensor, self-adhesive, super-stretchable, hydrogel, cloud platform monitoring
Subjects: H800 Chemical, Process and Energy Engineering
Department: Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User: Rachel Branson
Date Deposited: 14 Jun 2022 13:16
Last Modified: 02 Jun 2023 08:00

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