Lin Hsing-Ying, Huang Chen-Han, Chang Chih-Han, Lan Yun-Chiang, Chui Hsiang-Chen
Institute of Biomedical Engineering, National Cheng Kung University, No.1, University Road, Tainan 701, Taiwan.
Opt Express. 2010 Jan 4;18(1):165-72. doi: 10.1364/OE.18.000165.
In this paper we investigate the near-field optical behavior of plasmon coupling in gold nanoparticle pairs. In particular, by performing series measurements through a fiber-collection mode near-field scanning optical microscope (NSOM), we directly observed the localized electromagnetic (EM) field distribution between two nanospheres is sensitively depended on the incident polarization and interparticle distance. The qualitative near-field observation and quantitative analysis facilitate more understanding of localized hot spots in surface-enhanced Raman scattering (SERS), and nano-applications in selectively controlling the spatial distribution of localized surface plasmon (SP) modes on a fabricated nanostructure by adjusting the polarization direction.
在本文中，我们研究了金纳米颗粒对中表面等离子体耦合的近场光学行为。具体而言，通过使用光纤收集模式近场扫描光学显微镜（NSOM）进行系列测量，我们直接观察到两个纳米球之间的局域电磁场（EM）分布敏感地依赖于入射偏振和粒子间距离。定性的近场观察和定量分析有助于更深入地理解表面增强拉曼散射（SERS）中的局域热点，以及通过调整偏振方向在制造的纳米结构上选择性控制局域表面等离子体（SP）模式空间分布的纳米应用。
