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Metal-dielectric-CNT nanowires for femtomolar chemical detection by surface enhanced Raman spectroscopy.
Journal article

Metal-dielectric-CNT nanowires for femtomolar chemical detection by surface enhanced Raman spectroscopy.

  • 2013-05-23
Published in:
  • Advanced materials (Deerfield Beach, Fla.). - 2013
SERS
energy coupling barrier
femtomolar detection
metal-dielectric-CNT nanowires
Ethylenes
Gold
Nanotubes, Carbon
Nanowires
Pyridines
Spectrum Analysis, Raman
Surface Properties
English A highly sensitive substrate for surface enhanced Raman spectroscopy (SERS) is formed by arrays of gold-coated metallic carbon nanotubes having a nanoinsert of high-k dielectric (hafnia) as an energy coupling barrier. Repeated femtomolar detection of 1,2 bis-(4-pyridyl)-ethylene in solution demonstrates the critical contribution of this plasmonic energy coupling barrier to the enhanced chemical sensitivity.
Language
  • English
Open access status
closed
Identifiers
Persistent URL
https://sonar.ch/global/documents/185243
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