DNA-mediated self-assembly of tetrahedral plasmonic clusters for metafluids

ORAL

Abstract

We direct the self-assembly of clusters of gold nanospheres with the goal of creating a bulk, isotropic, optical metafluid. We use spherical gold nanoparticles that are exceptionally smooth, monocrystalline, and monodisperse. These particles exhibit highly reproducible scattering spectra compared with commercially available gold colloids. We label them with DNA sequences and mix them together to self-assemble small clusters. By controlling the particle sizes and the interactions between them, we maximize the yield of tetrahedral clusters, the ideal structures for isotropic metamaterials.

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Authors

  • Nicholas Schade

    Harvard University

  • Li Sun

    Harvard University

  • You-Jin Lee

    Sungkyunkwan University

  • Jonathan Fan

    University of Illinois at Urbana-Champaign

  • Federico Capasso

    School of Engineering and Applied Sciences, Harvard University, Harvard University

  • Gi-Ra Yi

    Sungkyunkwan University

  • Vinothan Manoharan

    School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, USA, Harvard University, School of Engineering and Applied Sciences and the Department of Physics, Harvard University, SEAS Department of Physics, Harvard Univ, Harvard University