材料科学
制作
液态金属
可伸缩电子设备
表面张力
磁滞
纳米技术
纵横比(航空)
线性
导电体
光电子学
复合材料
电子工程
电气工程
工程类
病理
数码产品
物理
替代医学
医学
量子力学
作者
Hongji Guo,Xiaofeng Lv,Wenyuan Chen,Ya Zhong,Wuhao Zou,Lianqing Liu,Haibo Yu
标识
DOI:10.1002/admt.202200749
摘要
Abstract Flexible electronic devices containing gallium‐based liquid metal (GbLM) play an important role in human–computer interaction and the sensing elements of motion monitoring owing to the intrinsic fluidity and metallic conductivity of the GbLM. High‐aspect‐ratio liquid‐metal patterns have 3D structures, which can increase the heat radiating area of the circuits and the stability of the sensors. However, fabricating high‐aspect‐ratio patterns in high resolution is challenging owing to easy oxidation at the surface layer and the high surface tension of the liquid metal. This study proposes a simple method for the efficient and reproducible fabrication of GbLM patterns. A flexible strain sensor was obtained with high‐aspect‐ratio Galinstan (height/width > 5), linearity ( R ‐square = 0.9975), stability (Δ R / R 0 < 0.8 after 10 000 cycles), and low hysteresis. In addition, the application of the strain sensor in the flexible display and motion measurement of soft hand exoskeletons is demonstrated. The high‐aspect‐ratio liquid‐metal patterns in this work have the potential to extend the application of the presented flexible electronics to the fields of wearable systems and rehabilitation devices.
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