期刊
ADVANCED ENGINEERING MATERIALS
卷 20, 期 10, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adem.201800054
关键词
Functional Liquid Metal; Hybrid Flexible Electronics; Ni-GaIn Amalgam; Rapid Fabrication; Wearable Healthcare Device
资金
- NSFC Key Project [91748206]
- Ministry of Higher Education Equipment Development Fund
- Frontier Project of the Chinese Academy of Science
Recent advances in functional low-melting liquid metals (LMs) provide routes to quickly fabricate wearable devices, which can offer excellent mechanical compliance on human skin compared to conventional rigid wafer-based electronics. Particularly, the Gallium-based LM mixtures are promising materials for use as stretchable and flexible circuits in wearable healthcare electronics due to their fantastic electrical conductivity, favorable fluidity, super compliance, and benign biocompatibility. Here, the authors develop a kind of directly-printed Ni-GaIn functional amalgams, which can efficiently construct wearable healthcare monitors. Unlike EGaIn, Ni-GaIn amalgam owns a tunable and enhanced adhesion, which makes it easy to directly paint on various substrate for customized circuits. A wireless power transfer coil printed with these amalgams is presented to demonstrate the electrical stability under different tensile states. Finally, the authors design a wearable healthcare monitor for pulse wave measurement via collecting pulse wave signals from the wrist steadily. With the advantages of stretchability and rapid manufacture, the functional Ni-GaIn amalgams as currently presented shows a promising approach for individualized wearable electronics.
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