Direct Writing and Repairable Paper Flexible Electronics Using Nickel-Liquid Metal Ink
Direct Writing and Repairable Paper Flexible Electronics Using Nickel-Liquid Metal Ink
复制标题
使用镍液态金属墨水直接书写和可修复纸质柔性电子产品
DOI：
10.1002/admi.201800571
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发表时间：
2018-10-23
影响因子：
5.4
通讯作者：
Liu, Jing
中科院分区：
文献类型：
--
作者：
Chang, Hao;Guo, Rui;Liu, Jing
镓及其合金等液态金属可以印刷在各种基板上形成电子电路。然而，到目前为止，在普通印刷纸上直接写入液态金属的方法仍然很少。介绍了一种在镓合金中添加金属粉末制备的新型导电材料。该材料具有低流动性、优异的塑性、对纸质基材的粘附性显著增强等特点，保证了电连接的稳定性和柔性。包裹镍粉的氧化膜形成额外氧化产物的骨架，从而对纸张产生上级粘合性。此外，还展示了几种纸质柔性电子应用，以证明这种材料的实用价值和可修复性。这项工作为设计一种制备纸电子器件的简便方法铺平了道路。
Liquid metals such as gallium and its alloys can be printed on various substrates to form electronic circuits. However, up to now there are still few methods for the direct writing of liquid metals on common printed paper. Here, a novel conductive material prepared by adding metal powder to a gallium alloy is introduced. The proposed material exhibits low liquidity, excellent plasticity, significantly enhanced adhesivity to paper substrates, which guarantee the stable and flexible electrical connection. The oxide film wrapping the nickel powder forms a skeleton for additional oxidation products, resulting in superior adhesion to paper. In addition, several paper flexible electronic applications are showcased to demonstrate the practical value and reparability of this material. This work paves the way for the design of a facile method of preparing paper electronics.