Near-field mapping of three-dimensional surface charge poles for hybridized plasmon modes
Author
Huang, Yu; Ringe, Emilie; Hou, Mengjing; Ma, Lingwei; Zhang, Zhengjun
Date
2015Abstract
We describe a new computational approach to mapping three-dimensional (3D) surface charge poles and thus to determine complicated and hybridized plasmon modes in metallic nanostructures via finite element method (FEM) calculations. 3D surface charge distributions at the near-field resonance energies are calculated directly using Gaussメ law. For a nanosphere dimer, we demonstrate that higher-order hybridized plasmon modes can be addressed clearly. As an improvement to conventional mapping approaches, this new approach provides a better understanding of comprehensive physical image of plasmonic systems necessary for fundamental studies and spectroscopy applications.
Citation
Published Version
Type
Journal article