Study of Plasmonic Resonances on Platonic Solids

Dimitrios C. Tzarouchis*, Pasi Ylä-Oijala, Ari Sihvola

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

2 Citations (Scopus)
112 Downloads (Pure)

Abstract

In this study we discuss the plasmonic subwavelength scattering resonances of five regular polyhedra, that is, the Platonic solids tetrahedron, hexahedron, octahedron, dodecahedron, and icosahedron. A brief discussion regarding their geometrical characteristics and the numerical method used in the study is given. All results are compared with the benchmark case of a sphere, in order to observe how the geometry of the solid affects the spectral characteristics. The principal finding is that the shift of the main dipole resonance exhibits a solid vertex hierarchical order; in other words, the position of the resonance correlates with the solid angle of the vertex of the given solid. This is in contrast with the hedra-hierarchical order found for the electrostatic dielectric response of these solids. These results can create new avenues for applications and devices that require plasmonic particles with on-demand functionalities.

Original languageEnglish
Pages (from-to)1450–1457
Number of pages8
JournalRadio Science
Volume52
Issue number12
Early online date2017
DOIs
Publication statusPublished - Dec 2017
MoE publication typeA1 Journal article-refereed

Keywords

  • Plasmonic albedo
  • Plasmonic nanoparticles
  • Platonic solids
  • Scattering
  • Surface integral equations
  • Vertex

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