Department of Physics, National Taiwan University, Taipei, Taiwan.
Nanotechnology. 2011 Sep 23;22(38):385702. doi: 10.1088/0957-4484/22/38/385702. Epub 2011 Aug 26.
Opaque Raman-enhancing substrates made of Ag nanoparticles on incompletely oxidized aluminum templates have been rendered transparent by an ion-drift process to complete the oxidation. The result shows that the transparent substrates exhibit high/uniform surface-enhanced Raman scattering (SERS) capability and good optical transmissivity, allowing for concurrent SERS characterization and high contrast transmission-mode optical imaging of S. aureus bacteria. We also demonstrate that the transparent substrates can used in conjunction with optical fibers as SERS sensors for in situ detection of malachite green down to 10(-9) M.
由不完全氧化的铝模板上的银纳米粒子制成的不透明的 Raman 增强衬底，通过离子漂移过程使其完全氧化，从而变得透明。结果表明，透明衬底具有高/均匀的表面增强 Raman 散射（SERS）能力和良好的透光率，允许同时进行 SERS 特性分析和金黄色葡萄球菌的高对比度透射模式光学成像。我们还证明，透明衬底可以与光纤一起用作 SERS 传感器，用于现场检测孔雀石绿，其检测下限低至 10(-9) M。
