2012/02/27 by Nahid Talebi, Wilfried Sigle, Talebi, Nahid +15
Biochemistry, Genetics and Molecular Biology · Engineering · Materials Science · Physics and Astronomy · #Chemical Physics (physics.chem-ph) #FOS: Physical sciences #Gold and Silver Nanoparticles Synthesis and Applications #Orbital Angular Momentum in Optics #Plasmonic and Surface Plasmon Research #Protein Interaction Studies and Fluorescence Analysis
paper · pdf · doi:10.48550/arxiv.1202.5876
openalex publication_date 2012/02/27 · openalex created_date 2022/10/06 · openalex updated_date 2026/07/28
In this paper, we present a systematic investigation of symmetry-breaking in\nthe plasmonic modes of triangular gold nanoprisms. Their geometrical C3\nsymmetry is one of the simplest possible that allows degeneracy in the\nparticle's mode spectrum. It is reduced to the non-degenerate symmetries Cv or\nE by positioning additional, smaller gold nanoprisms in close proximity, either\nin a lateral or a vertical configuration. Corresponding to the lower symmetry\nof the system, its eigenmodes also feature lower symmetries (Cv), or preserve\nonly the identity (E) as symmetry. We discuss how breaking the symmetry of the\nplasmonic system not only breaks the degeneracy of some lower order modes, but\nalso how it alters the damping and eigenenergies of the observed Fano-type\nresonances.\n