Plasmon hybridization in stacked nanorods dimer

Ming Tian, Ping Lu, Li Chen, Hao Liao, Deming Liu, Nasser Peyghambarian, Jiangshan Zhang

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

In this paper, we investigate the coupling effects of three dimensional Au nanorods dimer. Structural arrangement determines the electromagnetic properties of matter. Plasmon hybridization theory can explain the mode split phenomenon. A theoretical model based on a Langrangian formalism is used to interpret the evolution of the coupling effects as a function of twist angle which demonstrate that the optical properties of these Au nanorod dimers can be substantially modified by altering the twist angles between the two rods, arising from the variation of electromagnetic interactions between them. Furthermore, it shows that the dependence of the resonance frequencies and the frequency gap on the distance between two rods. We find that by increasing the twist angle or the distance between two rods, the two resonance branches tend to converge. Last, we use the 3D-finite-difference time-domain (FDTD) method to do numerical simulation, which reveals that the theoretical model can quantitatively corroborate the results from the numerical simulations.

Original languageEnglish (US)
Pages (from-to)20-25
Number of pages6
JournalOptics Communications
Volume311
DOIs
StatePublished - Sep 23 2013

Keywords

  • Coupled resonators
  • Optical properties
  • Surface plasmons

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Plasmon hybridization in stacked nanorods dimer'. Together they form a unique fingerprint.

  • Cite this