Plasmonic properties and optimization of ultraviolet surface-enhanced Raman spectroscopy

被引：4
|
作者：
Pei, Huan [1 ]
Wei, Yong [2 ,3 ]
Dai, Qiyuan [2 ]
Wang, Fengmin [3 ]
机构：
[1] Yanshan Univ, Coll Informat Sci & Engn, Qinhuangdao 066004, Hebei, Peoples R China
[2] Yanshan Univ, Sch Sci, Key Lab Microstruct Mat Phys Hebei Prov, Qinhuangdao 066004, Hebei, Peoples R China
[3] Yanshan Univ, Coll Iiren, Qinhuangdao 066004, Hebei, Peoples R China
来源：
OPTICS COMMUNICATIONS | 2020年 / 456卷
基金：
美国国家科学基金会;
关键词：
Surface enhanced Raman spectroscopy; Localized surface plasmon; Ultraviolet; Aluminum nanoparticles; NANOPARTICLES;
D O I：
10.1016/j.optcom.2019.124631
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The investigation of plasmonic properties and optimization of ultraviolet surface-enhanced Raman spectroscopy (UV-SERS) are essential for improving the detective capability in terms of high sensitivity and application range. In this work, the finite element method (FEM) are performed for the UV-SERS using Al nanoparticles (NPs) dimer. We theoretically explore the influence of incident angle, radius and separation of NPs dimer on the electric enhancement. The simulation results show that the optimized radius and separation of NPs dimer are 30 nm and 1 nm for UV-SERS measurements under the normal incidence condition, where the strongest Raman enhancement factor reach as high as 9 orders with excitation wavelength of 215 nm. Our results may help to find the optimal geometric factor for further improving the performance of the UV-SERS system.
引用
收藏
页数：4
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