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Helical Assemblies of Gold Nanoparticles

Authors

  • G. Daniel Lilly,

    1. Department of Chemical Engineering, University of Michigan, Ann Arbor, Michigan 48109, USA
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  • Ashish Agarwal,

    1. Department of Chemical Engineering, University of Michigan, Ann Arbor, Michigan 48109, USA
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  • Sudhanshu Srivastava,

    1. Department of Chemical Engineering, University of Michigan, Ann Arbor, Michigan 48109, USA
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  • Nicholas A. Kotov

    Corresponding author
    1. Department of Chemical Engineering, University of Michigan, Ann Arbor, Michigan 48109, USA
    2. Department of Material Sciences and Engineering, University of Michigan, Ann Arbor MI, 48109, USA
    3. Departments of Biomedical Engineering, University of Michigan, Ann Arbor MI, 48109, USA
    • Department of Chemical Engineering, University of Michigan, Ann Arbor, Michigan 48109, USA.
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Abstract

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Chiral metallic nanohelices with periodicity in the submicrometer regime are made from twisted CdTe nanoribbons. These helices are highly effective in polarization rotation at wavelengths centered at their pitch length. Interestingly, the chiro-optical performance of helical nanoparticle assemblies is better than that of solid gold nanowires with similar geometries, which sets an important target for the design of metamaterials.

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