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Volume 186, 2016
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Modular, polymer-directed nanoparticle assembly for fabricating metamaterials

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Abstract

We achieve the fabrication of plasmonic meta-atoms by utilizing a novel, modular approach to nanoparticle self-assembly that utilizes polymer templating to control meta-atom size and geometry. Ag nanocubes are deposited and embedded into a polymer thin-film, where the polymer embedding depth is used to dictate which nanocube faces are available for further nanocrystal binding. Horizontal and vertical nanocube dimers were successfully fabricated with remarkably high yield using a bifunctional molecular linker to bind a second nanocube. Surface plasmon coupling can be readily tuned by varying the size, shape, and orientation of the second nanoparticle. We show that meta-atoms can be fabricated to exhibit angle- and polarization-dependent optical properties. This scalable technique for meta-atom assembly can be used to fabricate large-area metasurfaces for polarization- and phase-sensitive applications, such as optical sensing.

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Publication details

The article was received on 01 Sep 2015, accepted on 14 Sep 2015 and first published on 14 Sep 2015


Article type: Paper
DOI: 10.1039/C5FD00134J
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Faraday Discuss., 2016,186, 489-502

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    Modular, polymer-directed nanoparticle assembly for fabricating metamaterials

    G. K. Laxminarayana, M. Rozin, S. Smith and A. R. Tao, Faraday Discuss., 2016, 186, 489
    DOI: 10.1039/C5FD00134J

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