Sensitive SERS nanotags for use with a hand-held 1064 nm Raman spectrometer

Hayleigh Kearns, Fatima Ali, Matthew A. Bedics, Neil C. Shand, Karen Faulds, Michael R. Detty, Duncan Graham

Research output: Contribution to journalArticle

4 Citations (Scopus)
75 Downloads (Pure)

Abstract

This is the first report of the use of a hand-held 1064 nm Raman spectrometer combined with red shifted surface enhanced Raman scattering (SERS) nanotags to provide an unprecedented performance in the short-wave infrared (SWIR) region. A library consisting of 17 chalcogenopyrylium nanotags produce extraordinary SERS responses with femtomolar detection limits being obtained using the portable instrument. This is well beyond previous SERS detection limits at this far red shifted wavelength and opens up new options for SERS sensors in the SWIR region of the electromagnetic spectrum (between 950-1700 nm).
Original languageEnglish
Article number170422
Number of pages14
JournalRoyal Society Open Science
Volume4
Issue number7
DOIs
Publication statusPublished - 19 Jul 2017

Keywords

  • hand-held Raman spectrometer
  • SWIR excitation
  • SERS nanotags
  • limits of detection
  • hollow gold nanoshells
  • chalcogenopyrylium dyes

Fingerprint Dive into the research topics of 'Sensitive SERS nanotags for use with a hand-held 1064 nm Raman spectrometer'. Together they form a unique fingerprint.

  • Projects

    Student Theses

    Hollow gold nanoshells as unique near infrared optical materials for surface enhanced Raman scattering

    Author: May, H., 10 Mar 2016

    Supervisor: Graham, D. (Supervisor) & Faulds, K. (Supervisor)

    Student thesis: Doctoral Thesis

    Cite this