Fano-like interference in self-assembled plasmonic quadrumer clusters

Nano Lett. 2010 Nov 10;10(11):4680-5. doi: 10.1021/nl1029732. Epub 2010 Oct 5.

Abstract

Assemblies of strongly interacting metallic nanoparticles are the basis for plasmonic nanostructure engineering. We demonstrate that clusters of four identical spherical particles self-assembled into a close-packed asymmetric quadrumer support strong Fano-like interference. This feature is highly sensitive to the polarization of the incident electric field due to orientation-dependent coupling between particles in the cluster. This structure demonstrates how careful design of self-assembled colloidal systems can lead to the creation of new plasmonic modes and the enabling of interference effects in plasmonic systems.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Computer Simulation
  • Dendrimers
  • Light
  • Materials Testing
  • Models, Chemical*
  • Nanostructures / chemistry*
  • Nanostructures / ultrastructure*
  • Refractometry / methods*
  • Scattering, Radiation
  • Surface Plasmon Resonance / methods*

Substances

  • Dendrimers