Plasmonic properties and energy flow in rounded hexahedral and octahedral nanoparticles
journal contributionposted on 19.02.2018, 14:05 authored by Dimitrios C. Tzarouchis, Pasi Yla-Oijala, Tapio Ala-NissilaTapio Ala-Nissila, Ari Sihvola
The resonant plasmonic properties of small dual rounded nano-scatterers are numerically investigated. A set of Drude-like, silver hexahedral and octahedral structures are studied and compared with a reference spherical particle through a numerical surface integral equation technique. Surface, near field, Poynting field and streamline distributions are presented illustrating novel plasmonic features arising from the complex shapes of the nanoparticles, while several designing rules are described. These qualitative observations can be used appropriately towards sensing, sorting, harvesting, and radiation control applications.
This work has been supported by the Aalto Energy Efficiency Programm, EXPECTS Project. D.T. would like also to acknowledge the ELEC Doctoral school funding scholarship for the support. T. A-N has been funded in part by the Academy of Finland through its COMP Center of Excellence program (grants no. 284621 and 287750).
- Mathematical Sciences