Surface-enhanced Raman scattering by composite structure of gold nanocube-PMMA-gold film
Surface-enhanced Raman scattering by composite structure of gold nanocube-PMMA-gold film
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金纳米立方体-PMMA-金膜复合结构的表面增强拉曼散射
DOI：
10.1364/ome.9.001872
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发表时间：
2019-04
影响因子：
2.8
通讯作者：
Wen Xiaolei
中科院分区：
文献类型：
--
作者：
Wang Xiangxian;Bai Xuelin;Pang Zhiyuan;Zhu Jiankai;Wu Yuan;Yang Hua;Qi Yunping;Wen Xiaolei
在这项研究中，我们实验制备的复合结构的170 nm的金纳米立方体，聚（甲基丙烯酸甲酯）（PMMA）的间隔层具有不同的厚度，和50 nm的金膜作为基板的表面等离子体激元激发和表面增强拉曼散射（Sers）。 以633 nm激光为激发光源，罗丹明6 G（R6 G）为拉曼探针分子，研究了金纳米立方体及其复合结构在5.625 μg/mL金纳米立方体水溶液中的表面增强Sers光谱。 结果表明，这种复合结构比单一的金纳米立方体结构产生更强的Sers信号。Sers拉曼峰强度与PMMA间隔层厚度之间的关系与有限元模拟得到的拉曼增强因子与PMMA间隔层厚度之间的关系具有相同的趋势。此外，R6 G浓度低至10−12 M可以通过复合结构检测到。
In this study, we experimentally prepared composite structures of 170 nm gold nanocube, poly(methyl methacrylate) (PMMA) spacer layers with different thicknesses, and 50 nm gold film as substrates for surface plasmons excitation and surface-enhanced Raman scattering (SERS). The SERS spectra of gold nanocube and the composite structure were studied by using a 633 nm laser as an excitation source and rhodamine 6G (R6G) as the Raman probe molecule with 5.625 µg/mL gold nanocube aqueous solution. It was found that the composite structures produced much stronger SERS signals than that with the single gold nanocube structure. The relationship between the intensities of SERS Raman peaks and the PMMA spacer layer thicknessess of the composite structures was found to have the same trend as that between the Raman enhancement factor and PMMA spacer layer thickness obtained by the finite element method simulation. Furthermore, a R6G concentration as low as 10−12 M could be detected by the composite structure.
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由金膜上带有 SiO2 间隔物的金纳米盘阵列组成的等离子体传感器的理论研究
影响因子：
1.7
作者：
Wang Xiangxian;Zhu Jiankai;Tong Huan;Yang Xudong;Wu Xiaoxiong;Pang Zhiyuan;Yang Hua;Qi Yunping
通讯作者：
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影响因子：
7.5
作者：
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DOI：
10.1016/j.saa.2018.06.105
发表时间：
2018-11
期刊：
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy
影响因子：
--
作者：
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影响因子：
9.9
作者：
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通讯作者：
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影响因子：
3.8
作者：
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通讯作者：
Xinyu Wang;Jie Zhang;Xiao-lei Zhang;Yong Zhu