Plasmon hybridization in nanoshell dimers |
| |
Authors: | Brandl Daniel W Oubre Chris Nordlander Peter |
| |
Institution: | Department of Physics and Astronomy, Rice Quantum Institute, M.S. 61, Rice University, Houston, Texas 77251-1892, USA. |
| |
Abstract: | We extend the plasmon hybridization method to investigate the plasmon modes of metallic nanoshell dimers. The formalism is also generalized to include the effects of dielectric backgrounds. It is shown that the presence of dielectrics shifts the plasmon resonances of the individual nanoparticles to lower energies and screens their interaction in the dimer configuration. The net result is a redshift of dimer energies compared to the system without dielectrics and a weaker dependence of the dimer plasmon energies on dimer separation. We calculate the plasmon energies and optical absorption of nanoshell dimers as a function of dimer separation. The results are in excellent agreement with the results of finite difference time domain simulations. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|