拉曼光谱
材料科学
基质(水族馆)
纳米结构
表面增强拉曼光谱
光子晶体
光电子学
蒸发
光谱学
电场
光子学
Crystal(编程语言)
激光器
光学
纳米技术
拉曼散射
海洋学
物理
量子力学
地质学
计算机科学
热力学
程序设计语言
作者
Seok-Min Kim,Wei Zhang,Brian T. Cunningham
摘要
We demonstrate that the resonant near fields of a large-area replica molded photonic crystal (PC) slab can efficiently couple light from a laser to SiO2–Ag “post-cap” nanostructures deposited on the PC surface by a glancing angle evaporation technique for achieving high surface enhanced Raman spectroscopy (SERS) enhancement factor. To examine the feasibility of the PC-SERS substrate, the simulated electric field around individual Ag particles and the measured Raman spectrum of trans-1,2-bis(4pyridyl)ethane on the PC-SERS substrate were compared with those from an ordinary glass substrate coated with the same SiO2–Ag nanostructures.
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