This work demonstrates a single-step method for synthesis and printing of metallic nanoparticles (NPs) in 2D micropatterns. The method is based on femtosecond laser writing, enabling fast and high precision deposition of silver, gold, or copper NPs in space-selective areas, which in general is not achieved by the traditional chemical routes or laser ablation of metal. Such finds were accomplished by employing laser-induced forward transfer in the femtosecond pulse regime (fs-LIFT). The results are promising for application, since metallic NPs, with a lognormal diameter distribution averaging between ~ 4 and 30 nm, allow exploring plasmon bands throughout the visible spectrum. The mechanisms behind NP formation by fs-LIFT are discussed based on the thermomechanical response of the material. An estimative based on the heat transfer suggests the occurrence of mechanical fragmentation rather than material vaporization. The main result addressed herein, however, is the ability to deposit silver, gold, and copper nanoparticles in selected regions, supporting the development of NP-based devices via one-step processing and their application in sensors and photonic circuits.

这项工作演示了一步一步的方法来合成和打印二维微图案中的金属纳米颗粒（NP）。该方法基于飞秒激光写入，可在空间选择区域中快速，高精度地沉积银，金或铜NP，这通常无法通过传统的化学途径或金属激光烧蚀来实现。这些发现是通过在飞秒脉冲范围（fs-LIFT）中采用激光诱导的正向传输来实现的。该结果具有应用前景，因为平均直径对数正态分布在约4至30 nm之间的金属NP允许在整个可见光谱中探索等离激元带。基于材料的热机械响应，讨论了通过fs-LIFT形成NP的机理。基于传热的估计表明发生了机械破碎而不是材料汽化。然而，本文解决的主要结果是能够在选定区域中沉积银，金和铜纳米粒子，从而通过一步处理及其在传感器和光子电路中的应用支持了基于NP的设备的开发。