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Are plasmons responsible for the Raman signal enhancement observed with gold nanoparticle sensors?

Chou, Alison, Jaatinen, Esa, & Fredericks, Peter M. (2011) Are plasmons responsible for the Raman signal enhancement observed with gold nanoparticle sensors? In Baldwin, Ken (Ed.) International Quantum Electronics Conference and Conference on Laser and Electro-Optics Pacific Rim Conference Proceedings, Institute of Electrical and Electronics Engineers, Sydney Convention & Exhibition Centre, Sydney, NSW, pp. 396-398.

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    Abstract

    The electromagnetic enhancement that occurs in surface enhanced Raman scattering (SERS) substrates containing gold nanoparticles (NPs) is believed to arise through the generation of localised surface plasmons. We present results that show no SERS signals are obtained when 25 nm diameter gold NPs layered quartz substrates exposed to 2-aminopyridine are illuminated with plasmon resonant 532 nm radiation, but SERS signals are observed when the same samples are illuminated with non-resonant 785 nm radiation.

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    ID Code: 53751
    Item Type: Conference Paper
    Keywords: Gold , Nanoparticles , Optical surface waves , Plasmons , Raman scattering , Substrates , Surface treatment
    DOI: 10.1109/IQEC-CLEO.2011.6194001
    ISBN: 9780977565771
    Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000)
    Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
    Current > QUT Faculties and Divisions > Science & Engineering Faculty
    Copyright Owner: Copyright 2012 IEEE
    Copyright Statement: This work has been submitted to the IEEE for possible publication. Copyright may be transferred without notice, after which this version may no longer be accessible
    Deposited On: 20 Sep 2012 08:45
    Last Modified: 26 Sep 2012 12:59

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