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Large-scale and uniform Raman substrate of coupled Ag grating with Ag triangle arrays
Li, Kuanguo1,2,3; Liu, Guangju1,2; Ghafoor, Sonia4,5; Dai, Yanqiu4,5; Huang, Wanxia1,2; Zhang, Fabao1,2; Lu, Yonghua4,5
作者部门瞬态光学技术国家重点实验室
2019-03
发表期刊JOURNAL OF OPTICS
ISSN2040-8978;2040-8986
卷号21期号:3
产权排序1
摘要

Vertically coupled plasmonic structures have been widely used in optical applications due to its enhanced electromagnetic fields in the gaps between metallic nanostructures. In this paper, a large-scale vertically coupled structure composed of the Ag triangle array (AgTA) on Ag grating separated by a nanometric dielectric layer is fabricated by nanosphere lithography incorporated with photolithography. Thanks to the effective surface plasmon polaritons excitation on the Ag grating, a significant surface enhanced Raman spectroscopy (SERS) effect arises from a strongly enhanced local electric field within the tiny gaps between the AgTA and Ag grating, which is verified by experiment and theoretical simulations. The as-proposed SERS substrate exhibits a nice uniformity with the relative standard deviation of about 10.5%, leading to excellent reliability for Raman detection. The simple fabrication of the large-area, productive, and inexpensive vertically coupled plasmonic structure can be a potential candidate for SERS applications.

关键词plasmonic interaction surface enhanced Raman scattering nanosphere lithography Ag grating
DOI10.1088/2040-8986/ab0273
收录类别SCI
语种英语
WOS记录号WOS:000458922900001
出版者IOP PUBLISHING LTD
引用统计
文献类型期刊论文
条目标识符http://ir.opt.ac.cn/handle/181661/31173
专题瞬态光学技术国家重点实验室
通讯作者Li, Kuanguo; Lu, Yonghua
作者单位1.Anhui Normal Univ, Coll Phys & Elect Informat, Wuhu 241000, Anhui, Peoples R China
2.Anhui Normal Univ, Anhui Prov Key Lab Optoelect Mat Sci & Technol, Wuhu 241000, Anhui, Peoples R China
3.Chinese Acad Sci, State Key Lab Transient Opt & Photon, Xian 710068, Shanxi, Peoples R China
4.Univ Sci & Technol China, Dept Opt & Opt Engn, Hefei 230026, Anhui, Peoples R China
5.Univ Sci & Technol China, Anhui Key Lab Optoelect Sci & Technol, Hefei 230026, Anhui, Peoples R China
推荐引用方式
GB/T 7714
Li, Kuanguo,Liu, Guangju,Ghafoor, Sonia,et al. Large-scale and uniform Raman substrate of coupled Ag grating with Ag triangle arrays[J]. JOURNAL OF OPTICS,2019,21(3).
APA Li, Kuanguo.,Liu, Guangju.,Ghafoor, Sonia.,Dai, Yanqiu.,Huang, Wanxia.,...&Lu, Yonghua.(2019).Large-scale and uniform Raman substrate of coupled Ag grating with Ag triangle arrays.JOURNAL OF OPTICS,21(3).
MLA Li, Kuanguo,et al."Large-scale and uniform Raman substrate of coupled Ag grating with Ag triangle arrays".JOURNAL OF OPTICS 21.3(2019).
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