Jalali, T.; Erni, Daniel; Hafner, Christian:

Analysis of surface plasmons in metallic nanoparticles of different shapes using the multiple multipole method

In: Proceedings of the 2 nd Conference on Nanostructures, March 11-14, 2008, Kish University, Kish Island, I.R. Iran
G18-F Aufl. , Kish Island, Iran: Kish University (2008), S. 39
Buchaufsatz / Kapitel / Fach: Elektrotechnik
The plasmon resonances of two-dimensional (2D) metallic particles with typical sizes of 15-50 nm are
numerically investigated. Extremely large electromagnetic fields enhancements occur near the surface of the particle at
resonance frequencies. These emergent localized surface plasmons are governed by both the dielectric function of the
metallic object, its geometry and the illumination direction. The analysis of such spherical and triangle-shaped
nanoparticles is performed using the semi-analytical multiple multipole (MMP) method, which provides complex
eigenvalue estimations as well as proper error measures. While controlling error measures highly-accurate
computations are carried out especially for coupled-particle configurations with different inter-particle distances and
under various illumination conditions.