Multipolar plasmon resonances in individual ag nanorice.
We study the optical excitation of high-order surface plasmon resonance modes in individual Ag nanorice particles using dark-field scattering spectroscopy. We analyze the results by model calculations using the boundary element method. Symmetry breaking caused by oblique illumination makes the even order resonance modes observable in the optical spectrum. All the resonance peaks are found to redshift with increasing length of the particle.
Wei
Hong
H
Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Box 603-146, Beijing 100190, China.
Reyes-Coronado
Alejandro
A
Nordlander
Peter
P
Aizpurua
Javier
J
Xu
Hongxing
H