Raman and near‐field spectroscopic study on localized surface plasmon excitation from the 2D nanostructure of gold nanoparticles
Raman and near‐field spectroscopic study on localized surface plasmon excitation from the 2D nanostructure of gold nanoparticles
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DOI：
10.1111/j.1365-2818.2008.01908.x
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发表时间：
2008-02
影响因子：
2
通讯作者：
M. K. Hossain;T. Shimada;M. Kitajima;K. Imura;H. Okamoto
中科院分区：
文献类型：
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作者：
M. K. Hossain;T. Shimada;M. Kitajima;K. Imura;H. Okamoto
我们利用扫描近场光学显微镜和远场表面增强拉曼散射测量，通过双光子诱导光致发光图像研究了二维纳米金纳米结构表面的电磁场。近场双光子诱导的光致发光图像显示，在二维纳米结构上发生双光子诱导的光致发光的强不均匀增强，表示局部表面等离子体激元激发。结果表明，二维纳米结构的局部结构影响局部表面等离子体激元激发的分布。
We have studied electromagnetic field on the surface of two‐dimensional nanostructure of gold nanoparticles through two‐photon–induced photoluminescence images by using scanning near‐field optical microscope and far‐field surface‐enhanced Raman scattering measurements. The near‐field two‐photon–induced photoluminescence image shows that strong inhomogeneous enhancement in two‐photon–induced photoluminescence occurs over the two‐dimensional nanostructure, representing localized surface plasmon excitations. The results suggest that the local structure of the two‐dimensional nanostructure influences the distribution of localized surface plasmon excitation.