Single molecule directivity enhanced raman scattering using nanoantennas

Aftab Ahmed, Reuven Gordon

Research output: Contribution to journalArticlepeer-review

98 Scopus citations

Abstract

Single molecule detection by directivity enhanced Raman scattering is demonstrated using nanoantennas. Bianalyte Raman scattering is used to confirm the detection of single molecules of Rhodamine 6G and Nile Blue A in aqueous solution. Calculations show that Raman enhancement factors of 10 13 can be achieved by combined optimization of the local field enhancement (hotspot with 10 11 enhancement) and antenna directionality (with 10 2 enhancement).

Original languageEnglish (US)
Pages (from-to)2625-2630
Number of pages6
JournalNano letters
Volume12
Issue number5
DOIs
StatePublished - May 9 2012
Externally publishedYes

Keywords

  • directivity
  • Nanoantenna
  • SERS
  • single molecule detection

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