Strongly coupled plasmonic modes on macroscopic areas via template-assisted colloidal self-assembly

Publikation: Beitrag in FachzeitschriftForschungsartikelBeigetragenBegutachtung

Beitragende

  • Christoph Hanske - , Universität Bayreuth (Autor:in)
  • Moritz Tebbe - , Universität Bayreuth (Autor:in)
  • Christian Kuttner - , Universität Bayreuth (Autor:in)
  • Vera Bieber - , Universität Bayreuth (Autor:in)
  • Vladimir V. Tsukruk - , Georgia Institute of Technology (Autor:in)
  • Munish Chanana - , Universität Bayreuth, ETH Zurich (Autor:in)
  • Tobias A.F. König - , Universität Bayreuth, Georgia Institute of Technology (Autor:in)
  • Andreas Fery - , Universität Bayreuth (Autor:in)

Abstract

We present ensembles of surface-ordered nanoparticle arrangements, which are formed by template-assisted self-assembly of monodisperse, protein-coated gold nanoparticles in wrinkle templates. Centimeter-squared areas of highly regular, linear assemblies with tunable line width are fabricated and their extinction cross sections can be characterized by conventional UV/vis/NIR spectroscopy. Modeling based on electrodynamic simulations shows a clear signature of strong plasmonic coupling with an interparticle spacing of 1-2 nm. We find evidence for well-defined plasmonic modes of quasi-infinite chains, such as resonance splitting and multiple radiant modes. Beyond elementary simulations on the individual chain level, we introduce an advanced model, which considers the chain length distribution as well as disorder. The step toward macroscopic sample areas not only opens perspectives for a range of applications in sensing, plasmonic light harvesting, surface enhanced spectroscopy, and information technology but also eases the investigation of hybridization and metamaterial effects fundamentally.

Details

OriginalspracheEnglisch
Seiten (von - bis)6863-6871
Seitenumfang9
FachzeitschriftNano letters
Jahrgang14
Ausgabenummer12
PublikationsstatusVeröffentlicht - 10 Dez. 2014
Peer-Review-StatusJa
Extern publiziertJa

Schlagworte

Schlagwörter

  • electromagnetic simulations, gold nanoparticle chains, protein coating, strong plasmon coupling, superradiant and subradiant modes