Plasmonic Coupling of a Gold Colloid and a Gold Film

ORAL

Abstract

Engineering of plasmon resonances is important for a variety of applications, including but not limited to surface enhanced Raman spectroscopy (SERS) and near field scanning optical microscopy (NSOM). Of special interest are systems where the plasmons of a nanoparticle and a thin gold film are coupled.~ This coupling allows for a greater degree of control of the plasmon resonance of the system, as well as a strong, localized, enhancement of the incident electric field.~ We demonstrate that this coupling, and the resulting enhancement, can be used for SERS applications, and explore its impact on potential NSOM applications.

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Authors

  • Kevin Kelly

    • Rice University

  • Albert Chang

    • Rice University

  • Fei Le

    • Rice University

  • Felicia Tam

    • Rice University

  • Naomi Halas

    • Rice University
    • Department of Chemistry, Laboratory for Nanophotonics, Department of Electrical and Computer Engineering

  • Peter Nordlander

    • Rice University