Surface-enhanced Raman scattering on dual-layer metallic grating structures |
| |
Authors: | ZhiQiang Guan Ulf Håkanson Nicklas Anttu Hong Wei HongQi Xu Lars Montelius HongXing Xu |
| |
Affiliation: | GUAN ZhiQiang, HÅKANSON Ulf, ANTTU Nicklas, WEI Hong, XU HongQi, MONTELIUS Lars & XU HongXing |
| |
Abstract: | Dual-layer Metallic grating (DMG) structures as surface-enhanced Raman scattering (SERS) substrates are studied using ben-zenethiol as the probe analyte. The DMG structure consists of a SiO2 grating and 100-nm-thick gold coating layers. An enhancement factor of 105 is achieved by optimizing the SiO2 grating height within the range from 165 to 550 nm. The enhancement factor dependence on the SiO2 grating height is due to the surface plasmon excitation, which is dependent on the polarization of the incident light, and confirmed by finite difference time domain simulations. This study demonstrates the advantages of high uniformity, reproducibility and sensitivity in the DMG structures for SERS applications. |
| |
Keywords: | surface-enhanced Raman scattering surface plasmon dual-layer metallic grating |
本文献已被 SpringerLink 等数据库收录! |
| 点击此处可从《科学通报(英文版)》浏览原始摘要信息 |
|
点击此处可从《科学通报(英文版)》下载全文 |