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Self-Healing Liquid Metal magnetic Hydrogels for Smart Feedback Sensors and High-Performance Electromagnetic Shielding

引用

Nano-Micro Letters 2023年第6期15卷 112-125页

作者： Biao Zhao Zhongyi Bai Hualiang Lv Zhikai Yan Yiqian Du Xiaoqin Guo Jincang Zhang Limin Wu Jiushuai Deng David Wei Zhang Renchao Che School of Microelectronics Fudan UniversityShanghai 2000433People’s Republic of China Laboratory of Advanced Materials Shanghai Key Lab of Molecular Catalysis and Innovative MaterialsAcademy for Engineering&TechnologyFudan UniversityShanghai 200438People’s Republic of China Key Laboratory of Separation and Processing of Symbiotic‑Associated Mineral Resources in Non‑Ferrous Metal Industry School of Chemical&Environmental EngineeringChina University of Mining&Technology(Beijing)Beijing 100083People’s Republic of China Institute of Optoelectronics Fudan UniversityShanghai 200433People’s Republic of China Henan Key Laboratory of Aeronautical Materials and Application Technology School of Material Science and EngineeringZhengzhou University of AeronauticsZhengzhou 450046HenanPeople’s Republic of China Zhejiang Laboratory Hangzhou 311100People’s Republic of China Inner Mongolia University Hohhot 010021People’s Republic of China

Hydrogels exhibit potential applications in smart wearable devices because of their exceptional sensitivity to various external ***,their applications are limited by challenges in terms of issues in biocompatibility,custom shape,and ***,a conductive,stretchable,adaptable,self-healing,and biocompatible liquid metal GaInSn/Ni-based composite hydrogel is developed by incorporating a magnetic liquid metal into the hydrogel framework through crosslinking polyvinyl alcohol(PVA)with sodium *** excellent stretchability and fast self-healing capability of the PVA/liquid metal hydrogel are derived from its abundant hydrogen binding sites and liquid metal ***,owing to the magnetic constituent,the PVA/liquid metal hydrogel can be guided remotely using an external magnetic field to a specific position to repair the broken wires with no need for manual *** composite hydrogel also exhibits sensitive deformation responses and can be used as a strain sensor to monitor various body ***,the multifunctional hydrogel displays absorption-dominated electromagnetic interference(EMI)shielding *** total shielding performance of the composite hydrogel increases to~62.5 dB from~31.8 dB of the pure PVA hydrogel at the thickness of 3.0 *** proposed bioinspired multifunctional magnetic hydrogel demonstrates substantial application potential in the field of intelligent wearable devices.

关键词： EMI shielding Liquid metal Hydrogel Self-healing properties Strain sensor magnetic patterning

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