"Ag on carbon nanowalls" mesostructures for SERS

Mikhail Yu Tsvetkov, Stanislav A. Evlashin, Kirill V. Mironovich, Svetlana A. Minaeva, Nikolay V. Suetin, Victor N. Bagratashvili

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

4 Citations (Scopus)

Abstract

We have elaborated substrates for surface enhanced Raman scattering (SERS) based on carbon nanowalls (CNW) deposited with Ag nanoparticles and thin Ag films. For carbon nanowalls deposited with silver nanoparticles, the achieved analytical enhancement factor SERS was from 50 to 2500. Much higher analytical enhancement factor of SERS, up to 5×104, was obtained for carbon nanowalls deposited with thin Ag film. In this case the SERS signal is determined by fractal structure of carbon nanowalls covered by Ag films. Such fractal structure provides a strong inhomogeneous localization of light, formation of a large number of hot spots and leads as a result to significant enhancement of SERS signal.

Original languageEnglish
Title of host publicationPhotonics, Devices, and Systems VI
EditorsDagmar Senderakova, Pavel Tomanek, Pavel Tomanek, Petr Pata, Petr Pata
PublisherSPIE
ISBN (Electronic)9781628415667
DOIs
Publication statusPublished - 2015
Externally publishedYes
EventPhotonics, Devices, and Systems VI - Prague, Czech Republic
Duration: 27 Aug 201429 Aug 2014

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume9450
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferencePhotonics, Devices, and Systems VI
Country/TerritoryCzech Republic
CityPrague
Period27/08/1429/08/14

Keywords

  • Carbon nanowalls (CNW)
  • Fractals
  • Hot spots
  • Nanoparticles
  • Nanostructures
  • Surface enhanced Raman scattering (SERS)
  • Thin films

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