Gold “Nanograils” with Tunable Dipolar Multiple Plasmon Resonances

Authors

  • Chul-Joon Heo,

    1. Department of Chemical and Biomolecular Engineering National Creative Research Initiative Center for Integrated Optofluidic Systems, KAIST 335 Gwahangno, Yuseong-gu, Daejeon, 305-701 (Korea)
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  • Se-Heon Kim,

    1. Department of Chemical and Biomolecular Engineering National Creative Research Initiative Center for Integrated Optofluidic Systems, KAIST 335 Gwahangno, Yuseong-gu, Daejeon, 305-701 (Korea)
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  • Se Gyu Jang,

    1. Department of Chemical and Biomolecular Engineering National Creative Research Initiative Center for Integrated Optofluidic Systems, KAIST 335 Gwahangno, Yuseong-gu, Daejeon, 305-701 (Korea)
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  • Su Yeon Lee,

    1. Department of Chemical and Biomolecular Engineering National Creative Research Initiative Center for Integrated Optofluidic Systems, KAIST 335 Gwahangno, Yuseong-gu, Daejeon, 305-701 (Korea)
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  • Seung-Man Yang

    Corresponding author
    1. Department of Chemical and Biomolecular Engineering National Creative Research Initiative Center for Integrated Optofluidic Systems, KAIST 335 Gwahangno, Yuseong-gu, Daejeon, 305-701 (Korea)
    • Department of Chemical and Biomolecular Engineering National Creative Research Initiative Center for Integrated Optofluidic Systems, KAIST 335 Gwahangno, Yuseong-gu, Daejeon, 305-701 (Korea).
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Abstract

original image

Gold “nanograils”, novel plasmonic nanostructures that can be represented as three different-sized rings connected vertically by curved surfaces, similar to a miniaturized grail, are presented. Reflectance measurements and FDTD simulations demonstrate the existence of strong multiple plasmon resonances with the same dipolar symmetry around the sharp ring edges of the nanograils.

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