Abstract This research explores the optical properties of a large group of silicon/silica nanofibrous thin films. A picosecond pulse laser was employed for indirect deposition of ablated silicon on glass substrates. Prominent parameters such as laser power, repetition rate, pulse duration and scanning speed were changed to vary the structural and compositional properties of synthesized nanofibrous thin films. Transmission and specular reflection measurements along with material characterization techniques, Raman and FTIR, were employed for better interpretation of the results. By and large, an increase in the values for repetition rate and scanning speed produced a corresponding increase in optical data intensity, while an increase in power and pulse duration produced a drop in the same data. The results show that degree of oxidation and inherent porous structure are driving the light interaction in thin samples, as indicated by the changes in intensity or spectrum shape. Observation of these trends enabled us to apply tunable fabrication procedures to obtain desired groups of nanofibrous thin films. Electron and optical microscopy as well as background knowledge certify tangled nano-wired morphology in most cases. Structures with highly desirable usages, such as in sensing technology, can be optimized by their porosity, density and thickness.

中文翻译：

---

激光等离子体电离沉积诱导Si/SiO2纳米结构薄膜的光学特性

摘要 本研究探索了大量硅/二氧化硅纳米纤维薄膜的光学特性。皮秒脉冲激光器用于在玻璃基板上间接沉积烧蚀的硅。改变了激光功率、重复率、脉冲持续时间和扫描速度等重要参数，以改变合成纳米纤维薄膜的结构和组成特性。透射和镜面反射测量以及材料表征技术、拉曼和 FTIR 被用于更好地解释结果。总的来说，重复率和扫描速度值的增加导致光学数据强度相应增加，而功率和脉冲持续时间的增加导致相同数据的下降。结果表明，氧化程度和固有的多孔结构正在驱动薄样品中的光相互作用，如强度或光谱形状的变化所示。对这些趋势的观察使我们能够应用可调制造程序来获得所需的纳米纤维薄膜组。在大多数情况下，电子和光学显微镜以及背景知识证明了缠结的纳米线形态。具有非常理想用途的结构，例如在传感技术中，可以通过其孔隙率、密度和厚度进行优化。在大多数情况下，电子和光学显微镜以及背景知识证明了缠结的纳米线形态。具有非常理想用途的结构，例如在传感技术中，可以通过其孔隙率、密度和厚度进行优化。在大多数情况下，电子和光学显微镜以及背景知识证明了缠结的纳米线形态。具有非常理想用途的结构，例如在传感技术中，可以通过其孔隙率、密度和厚度进行优化。