In this paper, silver micro/nanostructures composed of sintered nanoparticles were printed by capturing silver nanoparticles in water with 800 nm femtosecond laser trapping. Relationships of laser power, scanning speed, nanoparticle concentration, and the width and morphology of fabricated silver wire were systematically investigated. It is found that low scanning speed and high nanoparticle concentration favor the printing of silver wire with good morphology. A silver wire with width of 305 nm was printed. Electrical resistivities of printed wires are about 24 times that of bulk silver. Silver grid structures and dot arrays were printed by using this technology. Several three-dimensional silver cuboid structures were also printed. This work provides a protocol for printing of three-dimensional metallic micro/nanostructures using laser trapping. These printed structures have great application prospects in metamaterials, flexible electronics, and SERS.

在本文中，通过使用 800 nm 飞秒激光捕获在水中捕获银纳米颗粒，打印由烧结纳米颗粒组成的银微/纳米结构。系统地研究了激光功率、扫描速度、纳米粒子浓度以及制备的银线的宽度和形貌之间的关系。发现低扫描速度和高纳米粒子浓度有利于印刷具有良好形态的银线。印刷了宽度为 305 nm 的银线。印刷线的电阻率大约是块状银的 24 倍。使用这种技术印刷银网格结构和点阵。还打印了几个三维银长方体结构。这项工作提供了一种使用激光捕获打印三维金属微/纳米结构的协议。