Investigation of surface plasmons in Kretschmann structure loaded with a silver nano-cube

doi:10.1016/j.rinp.2019.02.002

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	Investigation of surface plasmons in Kretschmann structure loaded with a silver nano-cube
	Wang, Xiangxian 1; Bai, Xuelin 1; Pang, Zhiyuan 1; Yang, Hua 1; Qi, Yunping 2
刊名	RESULTS IN PHYSICS
	2019-03
卷号	12 页码:1866-1870
关键词	Surface plasmons Silver nano-cube Electric field enhancement factor
ISSN号	2211-3797
DOI	10.1016/j.rinp.2019.02.002
英文摘要	A composite structure based on a Kretschmann structure loaded with silver nano-cube is proposed. A 442-nm laser was used to excite surface plasmons in the composite structure, and the electric field enhancement was numerically simulated using the finite element method. The excitation angles of surface plasmons under conditions of different thicknesses of a PMMA film were obtained by studying the reflection spectrum of the Kretschmann structure. By examining the extinction spectra of silver nano-cubes of different sizes, its optimal size was selected, which is 70 nm. The electric field enhancement factors of the composite structure and the composite PMMA-spaced silver nano-cube and silver film structure were compared in detail. The results show that the coupling of localized surface plasmons and propagating surface plasmons produced by the proposed composite structure mean that its electric field enhancement factor is significantly greater. Moreover, the electric field enhancement factor can be further improved by adding another laser to irradiate the composite structure symmetrically. The high electric field enhancement generated by the composite structure indicates that it has considerable application prospects in surface-enhanced Raman scattering.
资助项目	National Natural Science Foundation of China[61505074] ; National Natural Science Foundation of China[61865008]
WOS研究方向	Materials Science ; Physics
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000460704700271
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/32065]
专题	理学院
通讯作者	Wang, Xiangxian
作者单位	1.Lanzhou Univ Technol, Sch Sci, Lanzhou 730000, Gansu, Peoples R China 2.Northwest Normal Univ, Coll Phys & Elect Engn, Lanzhou 730070, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Wang, Xiangxian,Bai, Xuelin,Pang, Zhiyuan,et al. Investigation of surface plasmons in Kretschmann structure loaded with a silver nano-cube[J]. RESULTS IN PHYSICS,2019,12:1866-1870.
APA	Wang, Xiangxian,Bai, Xuelin,Pang, Zhiyuan,Yang, Hua,&Qi, Yunping.(2019).Investigation of surface plasmons in Kretschmann structure loaded with a silver nano-cube.RESULTS IN PHYSICS,12,1866-1870.
MLA	Wang, Xiangxian,et al."Investigation of surface plasmons in Kretschmann structure loaded with a silver nano-cube".RESULTS IN PHYSICS 12(2019):1866-1870.