Silver nanowires (AgNWs) are recognized as highly promising materials for flexible and transparent electrode applications. However, existing material-processing methods fail to achieve uniform and reliable AgNWs junctions. In this study, we propose a new method using the laser shock effect combined with the laser heating effect, for creating AgNW junctions within thin films. We explored the welding mechanism of AgNWs through optic-thermal welding, laser shock-enabled mechanical welding, and laser-shock-enabled optical-thermal-mechanical (LS-OTM) experiments, as well as numerical simulations, and the results demonstrate that the innovative mechanism of the LS-OTM process lies in its utilization of laser shock to adjust the gap between the nanowire junctions, which in turn achieves a fine control of the thermal effect of the heating laser localised surface plasmon resonance, and the atomic diffusion in the solid state at intermediate temperature under the action of the impact force is the mechanism of the formation of high-quality junctions. We prepared flexible transparent conductive films and studied their transmittance, conductivity, and thermal properties, the results show that the flexible transparent conductive films prepared by LS-OTM welding method have excellent transmittance, conductivity, and thermal properties, this verifies the feasibility and effectiveness of this processing strategy. The LS-OTM method is a viable solution for manufacturing transparent, conductive films from AgNWs for emerging applications such as flexible heated films, flexible displays, and wearable medical devices.

中文翻译：

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银纳米线激光冲击光热机械耦合焊接方法

银纳米线（AgNW）被认为是柔性和透明电极应用中极具前景的材料。然而，现有的材料加工方法无法实现均匀可靠的银纳米线结。在这项研究中，我们提出了一种利用激光冲击效应与激光加热效应相结合的新方法，在薄膜内创建 AgNW 结。我们通过光热焊接、激光冲击机械焊接、激光冲击光热机械（LS-OTM）实验以及数值模拟探索了AgNWs的焊接机理，结果表明： LS-OTM工艺的创新机制在于利用激光冲击来调节纳米线结之间的间隙，从而实现对加热激光局域表面等离子体共振的热效应以及纳米线中原子扩散的精细控制。在冲击力作用下的中温固态是形成高质量结的机制。我们制备了柔性透明导电薄膜，并研究了其透光率、导电率和导热性能，结果表明，采用LS-OTM焊接方法制备的柔性透明导电薄膜具有优异的透光率、导电率和导热性能，验证了方法的可行性和有效性。这种处理策略。 LS-OTM 方法是利用 AgNW 制造透明导电薄膜的可行解决方案，适用于柔性加热薄膜、柔性显示器和可穿戴医疗设备等新兴应用。