Advanced Materials

Self-Assembled Plasmonic Nanoring Cavity Arrays for SERS and LSPR Biosensing (Adv. Mater. 19/2013)

Authors

  • Hyungsoon Im,

    1. Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN 55455, USA
    Current affiliation:
    1. These authors contributed equally.
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  • Kyle C. Bantz,

    1. Department of Chemistry, University of Minnesota, Minneapolis, MN 55455, USA
    Current affiliation:
    1. These authors contributed equally.
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  • Si Hoon Lee,

    1. Department of Biomedical Engineering, University of Minnesota, Minneapolis, MN 55455, USA
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  • Timothy W. Johnson,

    1. Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN 55455, USA
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  • Christy L. Haynes,

    Corresponding author
    1. Department of Chemistry, University of Minnesota, Minneapolis, MN 55455, USA
    • Department of Chemistry, University of Minnesota, Minneapolis, MN 55455, USA.
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  • Sang-Hyun Oh

    Corresponding author
    1. Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN 55455, USA
    2. Department of Biomedical Engineering, University of Minnesota, Minneapolis, MN 55455, USA
    3. Department of Biophysics and Chemical Biology, Seoul National University, Seoul 151-747, Korea
    • Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN 55455, USA
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Abstract

Self-assembled plasmonic nanoring cavity arrays are formed alongside the curvature of highly packed metallic nanosphere gratings. The sub-10-nm gap size is precisely tuned via atomic layer deposition and highly ordered arrays are produced over a centimeter-sized area. The resulting hybrid nanostructure boosts coupling efficiency of light into plasmons, and shows improved SERS detection limit. Further details can be found on page 2678 in the article by Sang-Hyun Oh, Christy L. Haynes, and co-workers.

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