Yu Kai, He Tian
College of Mechanical and Electrical Engineering, Qingdao University, Qingdao 266071, China.
Polymers (Basel). 2023 Mar 21;15(6):1545. doi: 10.3390/polym15061545.
The production of flexible electronic systems includes stretchable electrical interconnections and flexible electronic components, promoting the research and development of flexible conductors and stretchable conductive materials with large bending deformation or torsion resistance. Silver nanowires have the advantages of high conductivity, good transparency and flexibility in the development of flexible electronic products. In order to further prepare system-level flexible systems (such as autonomous full-software robots, etc.), it is necessary to focus on the conductivity of the system's composite conductor and the robustness of the system at the physical level. In terms of conductor preparation processes and substrate adhesion strategies, the more commonly used solutions are selected. Four kinds of elastic preparation processes (pretensioned/geometrically topological matrix, conductive fiber, aerogel composite, mixed percolation dopant) and five kinds of processes (coating, embedding, changing surface energy, chemical bond and force, adjusting tension and diffusion) to enhance the adhesion of composite conductors using silver nanowires as current-carrying channel substrates were reviewed. It is recommended to use the preparation process of mixed percolation doping and the adhesion mode of embedding/chemical bonding under non-special conditions. Developments in 3D printing and soft robots are also discussed.
柔性电子系统的生产包括可拉伸的电气互连和柔性电子元件，推动了具有大弯曲变形或抗扭转能力的柔性导体和可拉伸导电材料的研发。银纳米线在柔性电子产品的开发中具有高导电性、良好的透明度和柔韧性等优点。为了进一步制备系统级柔性系统（如自主全软件机器人等），有必要在物理层面关注系统复合导体的导电性和系统的稳健性。在导体制备工艺和基板粘附策略方面，选取了较为常用的解决方案。综述了四种弹性制备工艺（预拉伸/几何拓扑矩阵、导电纤维、气凝胶复合材料、混合渗流掺杂剂）以及五种以银纳米线作为载流通道基板来增强复合导体粘附力的工艺（涂层、嵌入、改变表面能、化学键和力、调整张力和扩散）。建议在非特殊条件下采用混合渗流掺杂的制备工艺以及嵌入/化学键合的粘附方式。还讨论了3D打印和软体机器人的发展情况。
