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    Shaping light beams in the nanometer scale: A Yagi-Uda nanoantenna in the optical domain

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    SalandrinoA_2007.pdf (447.9Kb)
    Issue Date
    2007-12-06
    Author
    Li, Jingjing
    Salandrino, Alessandro
    Engheta, Nader
    Publisher
    American Physical Society
    Type
    Article
    Article Version
    Scholarly/refereed, publisher version
    Rights
    ©2007 American Physical Society
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    Abstract
    A Yagi-Uda-like optical nanoantenna concept using resonant core-shell plasmonic particles as its “reflectors” and “directors” is studied numerically. Such particles when placed near an optical dipole source in a certain arrangement may exhibit large induced dipole moments, resulting in shaping the far-field radiation pattern, analogous to the far field of classical Yagi-Uda antennas in the microwave regime. The variation of the ratio of radii in concentric core-shell nanostructure is used to tailor the phase of the polarizabilities of the particles and, consequently, the antenna’s far-field pattern. The idea of a nanospectrum analyzer is also briefly proposed for molecular spectroscopy.
    URI
    http://hdl.handle.net/1808/21751
    DOI
    https://doi.org/10.1103/PhysRevB.76.245403
    Collections
    • Electrical Engineering and Computer Science Scholarly Works [260]
    Citation
    Li, J., Salandrino, A., & Engheta, N. (2007). Shaping light beams in the nanometer scale: A Yagi-Uda nanoantenna in the optical domain. Physical Review B, 76(24), 245403.

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    Contact KU ScholarWorks
    785-864-8983
    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    Image Credits
     

     

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