One-dimensional arrays of nanoshell dimers for single molecule spectroscopy via surface-enhanced raman scattering

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

Abstract

The optical properties of one-dimensional arrays of metal nanoshell dimers are studied systematically using the T-matrix method based on Mie theory, within the context of surface enhanced Raman scattering (SERS). It is shown that the local electromagnetic enhancement can be as high as similar to 4.5x10(13) for nanoshell dimer arrays with optimal geometry, and sensitive tunability in the resonant frequency can be gained by varying the geometrical parameters, making such structures appealing templates for SERS measurements with single molecule sensitivity. The extraordinarily high enhancement is attributed to a collective photonic effect constructively superposed onto the intrinsic enhancement associated with an isolated nanoshell dimer. (c) 2006 American Institute of Physics.

Detaljer

Författare
  • Ke Zhao
  • Hongxing Xu
  • Baohua Gu
  • Zhenyu Zhang
Enheter & grupper
Forskningsområden

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Den kondenserade materiens fysik
Originalspråkengelska
Artikelnummer081102
TidskriftJournal of Chemical Physics
Volym125
Utgivningsnummer8
StatusPublished - 2006
PublikationskategoriForskning
Peer review utfördJa