烧结
材料科学
电子线路
润湿
印刷电子产品
墨水池
数码产品
基质(水族馆)
超声波传感器
制作
接触角
柔性电子器件
纳米技术
复合材料
电气工程
声学
病理
工程类
地质学
物理
替代医学
海洋学
医学
作者
Sanhu Liu,Zhiwu Xu,Guoqiang Li,Zhengwei Li,Zihan Ye,Zirong Xu,Wenjun Chen,Dongdong Jin,Xing Ma
标识
DOI:10.1002/advs.202301292
摘要
Printing or patterning particle-based liquid metal (LM) ink is a good strategy to overcome poor wettability of LM for its circuits' preparation in flexible and printed electronics. Subsequently, a crucial step is to recover conductivity of LM circuits consisting of insulating LM micro/nano-particles. However, most widely used mechanical sintering methods based on hard contact such as pressing, may not be able to contact the LM patterns' whole surface conformally, leading to insufficient sintering in some areas. Hard contact may also break delicate shapes of the printed patterns. Hereby, an ultrasonic-assisted sintering strategy that can not only preserve original morphology of the LM circuits but also sinter circuits on various substrates of complex surface topography is proposed. The influencing factors of the ultrasonic sintering are investigated empirically and interpreted with theoretical understanding by simulation. LM circuits encapsulated inside soft elastomer are successfully sintered, proving feasibility in constructing stretchable or flexible electronics. By using water as energy transmission medium, remote sintering without any direct contact with substrate is achieved, which greatly protect LM circuits from mechanical damage. In virtue of such remote and non-contact manipulation manner, the ultrasonic sintering strategy would greatly advance the fabrication and application scenarios of LM electronics.
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