Surface-enhanced Raman spectroscopy (SERS) is a widely used analytical technique known for its high sensitivity and broad applicability. Despite its potential, SERS faces challenges related to detection sensitivity and reproducibility. This study proposes an innovative method to enhance SERS performance by employing water microdroplets as optical lenses on localized silver nanoparticle-decorated porous silicon (LocAg-PS) substrates. The hydrophobic nature of the LocAg-PS substrate not only ensures precise positioning of the microdroplet lenses on the silver nanoparticle grafted pad (AgNP pad) but also forms a plano-convex-like microdroplet lens for the focusing of the excitation laser and the collection of scattered light. Experimental results demonstrate that using microdroplet lenses enhances the SERS signal intensity and reproducibility, providing a rapid and cost-effective solution for advanced SERS analysis.

中文翻译：

---

利用微滴作为光学透镜，在局部银纳米颗粒装饰的多孔硅衬底上进行表面增强拉曼光谱 （SERS） 增强


表面增强拉曼光谱 （SERS） 是一种广泛使用的分析技术，以其高灵敏度和广泛的适用性而闻名。尽管 SERS 具有潜力，但仍面临与检测灵敏度和重现性相关的挑战。本研究提出了一种创新方法，通过在局部银纳米颗粒装饰的多孔硅 （LocAg-PS） 衬底上采用水微滴作为光学透镜来提高 SERS 性能。LocAg-PS 衬底的疏水性不仅确保了微滴透镜在银纳米颗粒接枝垫 （AgNP 垫） 上的精确定位，而且还形成了一个平凸状微滴透镜，用于激发激光的聚焦和散射光的收集。实验结果表明，使用微滴透镜可增强 SERS 信号强度和重现性，为高级 SERS 分析提供快速且经济高效的解决方案。