Enhancement of Dye Fluorescence by Gold Nanoparticles: Analysis of Particle Size Dependence

Toshihiro Nakamura; Shinji Hayashi

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Enhancement of Dye Fluorescence by Gold Nanoparticles: Analysis of Particle Size Dependence

机译：金纳米粒子增强染料荧光性：粒度依赖性分析

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Rose Bengal was spun on spherical gold nanoparticles immobilized on a quartz plate by a silane coupling agent. The enhancement of the dye fluorescence was studied by changing the diameter of the gold nanoparticles from 20 to 250 nm. A maximum enhancement of dye fluorescence was observed at a size of 100 nm. We found good agreement between the experimental result and the theoretical calculation. From the theoretical analysis it is suggested that the maximum enhancement is obtained when the incident light and fluorescence light are in optimum resonance with the surface plasmons in the gold nanoparticles. These results demonstrate that the control of particle size is extremely important to obtain an optimum enhancement of dye fluorescence caused by metal particles.

机译：将玫瑰红纺丝在通过硅烷偶联剂固定在石英板上的球形金纳米颗粒上。通过将金纳米颗粒的直径从20改变为250 nm，研究了染料荧光的增强。在100 nm的大小处观察到染料荧光的最大增强。实验结果与理论计算结果吻合良好。从理论分析表明，当入射光和荧光与金纳米颗粒中的表面等离子体激元处于最佳共振状态时，可获得最大的增强。这些结果表明，粒径的控制对于获得由金属粒子引起的染料荧光的最佳增强是极其重要的。

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来源
《Japanese Journal of Applied Physics. Part 1, Regular Papers, Brief Communications & Review Papers》 |2005年第9a期|p.6833-6837|共5页
作者
Toshihiro Nakamura; Shinji Hayashi;
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作者单位

Graduate School of Science and Technology, Kobe University, Rokkodai, Nada, Kobe 657-8501, Japan;

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原文格式 PDF
正文语种 eng
中图分类应用物理学;
关键词
surface plasmon; fluorescence; metal; molecule; local field enhancement;

机译：表面等离子体激元;荧光;金属;分子;局部场增强;

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Enhancement of Dye Fluorescence by Gold Nanoparticles: Analysis of Particle Size Dependence

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