J4 ›› 2015, Vol. 32 ›› Issue (2): 222-227.

• 激光应用 • 上一篇    下一篇

Ag纳米粒子点阵的表面等离激元共振特性调控

高俊,韩民   

  1. 1常熟理工学院物理与电子工程学院, 江苏 常熟 215500;
     2南京大学固体与微结构国家重点实验室, 江苏 南京 210093
  • 收稿日期:2014-07-07 修回日期:2014-09-17 出版日期:2015-03-28 发布日期:2015-03-17
  • 通讯作者: 高俊 (1964-) ,江苏常熟人,从事纳米材料电磁学、光学性质研究。 E-mail:jungao@cslg.cn

Controlling of Ag nanoparticle array for surface plasmon resonance properties

Gao Jun,Han Min   

  1. 1 College of Physics & Electronic Engineering, Changshu Institute of Technology, Changshu 215500, China 
    2 National Laboratory of Solid State Microstructures and Department of Materials Science and Engineering, Nanjing University, Nanjing 210093, China
  • Received:2014-07-07 Revised:2014-09-17 Published:2015-03-28 Online:2015-03-17

摘要:

通过纳米粒子束流气相沉积方法在衬底表面沉积稠密银纳米粒子点阵。通过对纳米粒子覆盖率的精细控制与纳米粒子点阵消光谱的实时监测,实现了其表面等离激元共振峰频率的系统调控。随着Ag纳米粒子密度的增加,点阵的表面等离激元共振波长发生红移,可逐步由小于400nm增大到570nm以上。研究发现,表面等离激元共振波长的变化与随纳米粒子沉积量增加而增加的紧密相邻的纳米粒子对的百分数相关。

关键词: 表面等离激元共振, 红移, Ag团簇点阵, 近场耦合

Abstract:

The densive silver nanoparticle array was deposited by using of nanometer particle beam gas phase deposition method 。Through real time monitoring on the extinction spectrum of the nanoparticles and the fine control on the nanoparticle array coverage was realized the system is control of surface plasmon resonance frequency with the increasing of the density of Ag nanoparticles,the redshift the surface plasmon resonance wavelength occurred from less than 400nm to more than 570nm。It was found that change of surface plasmon resonance wavelength was related to the percent of closely linked pairs among the deposited nanoparticles.

Key words: surface plasmon resonance, redshift, silver cluster, near-field coupling