Surface-enhanced Raman scattering effect of composite structure with gold nano-cubes and gold film separated by polymethylmethacrylate film

doi:10.7498/aps.68.20190054

IR > 理学院

	Surface-enhanced Raman scattering effect of composite structure with gold nano-cubes and gold film separated by polymethylmethacrylate film
	Wang Xiang-Xian1 ; Bai Xue-Lin 1; Pang Zhi-Yuan 1; Yang Hua1 ; Qi Yun-Ping 2; Wen Xiao-Lei 3
	2019-01-31
发表期刊	ACTA PHYSICA SINICA
ISSN	1000-3290
卷号	68 期号:3
摘要	The composite structure of metal nanoparticle and metal film can be used as a surface-enhanced Raman scattering (SERS) substrate to significantly enhance the Raman signal of adsorbed molecules due to the strong coupling between local surface plasmons and propagating surface plasmons. An SERS substrate of the composite structure with gold nano-cubes and gold film separated by polymethylmethacrylate (PMMA) film is proposed. The optimum thickness of PMMA is 15 nm obtained by numerical simulation through using finite element method. The composite structure of PMMA spacer with a thickness of 14 nm is prepared experimentally. Using R6G as the Raman probe molecules and He-Ne laser with a wavelength of 633 nm as an excitation source, the SERS effect of the composite structure and single gold nano-cubes are studied. It is found that the composite structure can make the probe molecules produce a stronger Raman signal than the single structure. Furthermore, the SERS spectra of R6G molecules on the composite structure under the condition of aqueous solution of gold nano-cubes with different concentrations are studied. The results show that when the concentration of gold nano-cubes' aqueous solution is 5.625 mu g/mL, the SERS signal of the R6G molecules on the composite structure is strongest. The lowest concentration of R6G molecules which can be detected is about 10(-11) mol/L.
关键词	surface plasmon surface-enhanced Raman scattering gold nano-cube gold film
DOI	10.7498/aps.68.20190054
收录类别	SCI ; SCIE
语种	中文
资助项目	National Natural Science Foundation of China[61505074]
WOS研究方向	Physics
WOS类目	Physics, Multidisciplinary
WOS记录号	WOS:000458164600025
出版者	CHINESE PHYSICAL SOC
EI入藏号	20191906900364
EI主题词	Nanocomposite films
EI分类号	547.1 Precious Metals - 712.1 Semiconducting Materials - 741.1 Light/Optics - 744.9 Laser Applications - 761 Nanotechnology - 815.1.1 Organic Polymers - 921 Mathematics - 921.6 Numerical Methods - 931 Classical Physics ; Quantum Theory ; Relativity - 931.3 Atomic and Molecular Physics - 951 Materials Science
引用统计	被引频次：31[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/32153
专题	理学院
通讯作者	Wang Xiang-Xian
作者单位	1.Lanzhou Univ Technol, Sch Sci, Lanzhou 730050, Gansu, Peoples R China; 2.Northwest Normal Univ, Coll Phys & Elect Engn, Lanzhou 730070, Gansu, Peoples R China; 3.Univ Sci & Technol China, Ctr Micro & Nanoscale Res & Fabricat, Hefei 230026, Anhui, Peoples R China
第一作者单位	理学院
通讯作者单位	理学院
第一作者的第一单位	理学院
推荐引用方式 GB/T 7714	Wang Xiang-Xian,Bai Xue-Lin,Pang Zhi-Yuan,et al. Surface-enhanced Raman scattering effect of composite structure with gold nano-cubes and gold film separated by polymethylmethacrylate film[J]. ACTA PHYSICA SINICA,2019,68(3).
APA	Wang Xiang-Xian,Bai Xue-Lin,Pang Zhi-Yuan,Yang Hua,Qi Yun-Ping,&Wen Xiao-Lei.(2019).Surface-enhanced Raman scattering effect of composite structure with gold nano-cubes and gold film separated by polymethylmethacrylate film.ACTA PHYSICA SINICA,68(3).
MLA	Wang Xiang-Xian,et al."Surface-enhanced Raman scattering effect of composite structure with gold nano-cubes and gold film separated by polymethylmethacrylate film".ACTA PHYSICA SINICA 68.3(2019).