期刊
SMALL
卷 -, 期 -, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/smll.202304147
关键词
flexible electronics; liquid metals; patterning; sintering
This review highlights the advancements and applications of room-temperature gallium-based liquid metals (RT-GaLMs) in flexible electronics. The physicochemical characteristics of RT-GaLMs and their regulation, as well as their diverse applications in self-healing circuits, flexible sensors, energy harvesting devices, and epidermal electronics, are discussed. The challenges and future research directions in this emerging field are also addressed.
Room-temperature gallium-based liquid metals (RT-GaLMs) have garnered significant interest recently owing to their extraordinary combination of fluidity, conductivity, stretchability, self-healing performance, and biocompatibility. They are ideal materials for the manufacture of flexible electronics. By changing the composition and oxidation of RT-GaLMs, physicochemical characteristics of the liquid metal can be adjusted, especially the regulation of rheological, wetting, and adhesion properties. This review highlights the advancements in the liquid metals used in flexible electronics. Meanwhile related characteristics of RT-GaLMs and underlying principles governing their processing and applications for flexible electronics are elucidated. Finally, the diverse applications of RT-GaLMs in self-healing circuits, flexible sensors, energy harvesting devices, and epidermal electronics, are explored. Additionally, the challenges hindering the progress of RT-GaLMs are discussed, while proposing future research directions and potential applications in this emerging field. By presenting a concise and critical analysis, this paper contributes to the advancement of RT-GaLMs as an advanced material applicable for the new generation of flexible electronics. Liquid metals for flexible electronics are systematically introduced. Two different forms of liquid metals are introduced-the bulks and particles. Their preparation and patterning methods, which applicable to both forms, are included. In particular, a sintering process for liquid metal particles assembled into flexible electronics is summarized. Their representative applications are also shown.image
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