TY - JOUR
T1 - Surface-enhanced Raman scattering on dual-layer metallic grating structures
AU - Guan, ZhiQiang
AU - Håkanson, Ulf
AU - Anttu, Nicklas
AU - Wei, Hong
AU - Xu, HongQi
AU - Montelius, Lars
AU - Xu, HongXing
N1 - Funding Information:
This work was supported by the International S&T Cooperation Program of China (2006DFB02020), the National Basic Research Program of China (2007CB936800 and 2009CB930704) and the Hundred Talents Program of the Chinese Academy of Sciences.
PY - 2010
Y1 - 2010
N2 - Dual-layer Metallic grating (DMG) structures as surface-enhanced Raman scattering (SERS) substrates are studied using benzenethiol 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.
AB - Dual-layer Metallic grating (DMG) structures as surface-enhanced Raman scattering (SERS) substrates are studied using benzenethiol 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.
KW - dual-layer metallic grating
KW - surface plasmon
KW - surface-enhanced Raman scattering
UR - http://www.scopus.com/inward/record.url?scp=77955829224&partnerID=8YFLogxK
U2 - 10.1007/s11434-010-3189-1
DO - 10.1007/s11434-010-3189-1
M3 - Article
AN - SCOPUS:77955829224
SN - 1001-6538
VL - 55
SP - 2643
EP - 2648
JO - Chinese Science Bulletin
JF - Chinese Science Bulletin
ER -