Sensitive surface-enhanced Raman scattering substrates based on anti-pyramidal gold architectures decorated with silver nanoparticles |
| |
Authors: | Shuangmei Zhu Chunzhen Fan Junqiao Wang Erjun Liang Haoshan Hao |
| |
Institution: | 1. College of Science, Henan University of Engineering, Zhengzhou, China;2. wypiaoxue@163.com;4. School of Physical Science and Engineering and Key Laboratory of Materials Physics of Ministry of Education of China, Zhengzhou University |
| |
Abstract: | AbstractA micro-structured gold surface, consisting of a periodic square–based anti–pyramidal array (Klarite) with a smooth boundary surface on which silver nanoparticles (diameter: 60?nm) were deposited, produced an active surface enhanced Raman scattering substrate. With p-aminothiophenol as a probe molecule, the Raman activity of the micro–structured surface was compared before and after deposition of the silver nanoparticles. Experimental results show that the Raman spectra on the silver/p-aminothiophenol/Klarite structure is stronger than that on the silver/p-aminothiophenol/gold film and the Raman spectra on the silver/p-aminothiophenol/gold film is stronger than that on silver/p-aminothiophenol, p-aminothiophenol/Klarite structure, p-aminothiophenol/gold film, which is confirmed by numerical simulations. A similar result is obtained with crystal violet as test molecule. |
| |
Keywords: | Anti-pyramidal architectures p-aminothiophenol silver nanoparticles surface enhanced Raman scattering |
|
|