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Quasi-isotropic surface plasmon polariton generation through near-field coupling to a penrose pattern of silver nanoparticles
Chalmers University of Technology, Sweden.ORCID iD: 0000-0002-4437-6291
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2014 (English)In: ACS Nano, ISSN 1936-0851, E-ISSN 1936-086X, Vol. 8, no 9, p. 9286-9294Article in journal (Refereed) Published
Abstract [en]

Quasicrystals are structures that possess long-range order without being periodic. We investigate the unique characteristics of a photonic quasicrystal that consists of plasmonic Ag nanodisks arranged in a Penrose pattern. The quasicrystal scatters light in a complex but spectacular diffraction pattern that can be directly imaged in the back focal plane of an optical microscope, allowing us to assess the excitation efficiency of the various diffraction modes. Furthermore, surface plasmon polaritons can be launched almost isotropically through near-field grating coupling when the quasicrystal is positioned close to a homogeneous silver surface. We characterize the dispersion relation of the different excited plasmon modes by reflection measurements and simulations. It is demonstrated that the quasicrystal in-coupling efficiency is strongly enhanced compared to a nanoparticle array with the same particle density but only short-range lateral order. We envision that the system can be useful for a number of advanced light harvesting and optoelectronic applications.

Place, publisher, year, edition, pages
American Chemical Society (ACS), 2014. Vol. 8, no 9, p. 9286-9294
Keywords [en]
quasicrystal, plasmonic nanoantenna, diffraction grating, surface plasmon polariton, Fourier plane, light management
National Category
Nano Technology Atom and Molecular Physics and Optics
Research subject
Physics
Identifiers
URN: urn:nbn:se:kth:diva-197578DOI: 10.1021/nn503195nISI: 000342184400059PubMedID: 25182843Scopus ID: 2-s2.0-84925617758OAI: oai:DiVA.org:kth-197578DiVA, id: diva2:1165979
Funder
Knut and Alice Wallenberg FoundationSwedish Research CouncilSwedish Foundation for Strategic Research
Note

QC 20171214

Available from: 2017-12-14 Created: 2017-12-14 Last updated: 2017-12-14Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
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  • de-DE
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Output format
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