Science China Physics, Mechanics and Astronomy

, Volume 55, Issue 10, pp 1763–1768

Enhancing the electric fields around the nanorods by using metal grooves

Article

DOI: 10.1007/s11433-012-4853-z

Cite this article as:
Zhao, Y., Qin, Y., Cao, W. et al. Sci. China Phys. Mech. Astron. (2012) 55: 1763. doi:10.1007/s11433-012-4853-z

Abstract

To enhance electric fields around nanorods, a Ag nanorod-groove system is presented and its electric field distribution is studied using the finite difference time domain method. Since the superposition of the electric fields of the split multi-beam of light works as excitation for electron oscillations in the nanorods, enhanced electric fields occur around the nanorods. In addition, the effects of topological parameters of the nanorod-groove system, such as the oblique angle of the groove, displacement of the nanorod to the bottom of the groove, and separation between the nanorods on electric field distributions are also studied. These results may be helpful for designing substrates to obtain larger electric fields around nanorods.

Keywords

optical propertynanorod-groove systemplasmonfinite difference time domain method

Copyright information

© Science China Press and Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  • YaNan Zhao
    • 1
    • 2
  • Yan Qin
    • 2
  • Wei Cao
    • 2
  • ZhongYue Zhang
    • 1
    • 2
  1. 1.College of Physics and Information TechnologyShaanxi Normal UniversityXi’anChina
  2. 2.School of Physical Science and TechnologySouthwest UniversityChongqingChina