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Title: Tuning the interaction between propagating and localized surface plasmons for surface enhanced Raman scattering in water for biomedical and environmental applications

With a view to biomedical and environmental applications, we investigate the plasmonic properties of a rectangular gold nanodisk array in water to boost surface enhanced Raman scattering (SERS) effects. To control the resonance wavelengths of the surface plasmon polariton and the localized surface plasmon, their dependence on the array period and diameter in water is studied in detail using a finite difference time domain method. A good agreement is obtained between calculated resonant wavelengths and those of gold nanodisk arrays fabricated using electron beam lithography. For the optimized structure, a SERS enhancement factor of 7.8 × 10{sup 7} is achieved in water experimentally.
Authors:
 [1] ;  [2] ;  [3] ;  [3] ;  [4] ; ;  [3] ;  [4] ;  [1]
  1. Device Solutions Center, Panasonic Corporation, 3-4, Hikaridai, Seika-cho, Soraku-gun, Kyoto 619-0237 (Japan)
  2. (Japan)
  3. Interuniversity Microelectronics Center VZW., Kapeldreef 75, 3001 Leuven (Belgium)
  4. (Belgium)
Publication Date:
OSTI Identifier:
22299912
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 104; Journal Issue: 24; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; CONTROL; ELECTRON BEAMS; GOLD; INTERACTIONS; PLASMONS; RAMAN EFFECT; RESONANCE; SURFACES; WATER; WAVELENGTHS