物理学报2012，Vol.61Issue(3)：428-434,7.
金银三层纳米管局域表面等离激元共振特性研究
Study on the localized surface plasmon resonance properties of bimetallic gold and silver three-layered nanotubes
摘要
Abstract
The localized surface plasmon resonance（LSPR） properties of bimetallic gold and silver three-layered nanotubes such as SiO_2-Ag -Au and SiO2-Au-Ag nanotubes are investigated by means of finite difference time domain method with varying the Au or Ag shell thickness and the size of the core.With the increase in core size,it is found that the LSPR peaks are red shifted.We also observe that the LSPR peaks blue shifted with the increase of thickness of the Au or Ag shell.Furthermore,the modulation of LSPR due to Ag shell is more significant than due to Au shell.We ascribe the shifts of the LSPR peaks to the plasmon hybridization and the competition between the free electrons and the oscillation electrons.关键词
二金属纳米管/等离激元共振/消光光谱/时域有限差分方法Key words
bimetallic nanotube/plasmon resonance/extinction spectra/finite difference time domain分类
数理科学引用本文复制引用
丛超,吴大建,刘晓峻,李勃..金银三层纳米管局域表面等离激元共振特性研究[J].物理学报,2012,61(3):428-434,7.基金项目
国家自然科学基金 （）
江苏省自然科学基金 （）
江苏高校优势学科建设工程资助的课题 （）
