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Controlling wave-vector of propagating surface plasmon polaritons on single-crystalline gold nanoplates
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2015 (English)In: Scientific Reports, ISSN 2045-2322, Vol. 5, 13424Article in journal (Refereed) Published
Abstract [en]

Surface plasmon polaritons (SPPs) propagating at metal nanostructures play an important role in breaking the diffraction limit. Chemically synthesized single-crystalline metal nanoplates with atomically flat surfaces provide favorable features compared with traditional polycrystalline metal films. The excitation and propagation of leaky SPPs on micrometer sized (10-20 mu m) and thin (30 nm) gold nanoplates are investigated utilizing leakage radiation microscopy. By varying polarization and excitation positions of incident light on apexes of nanoplates, wave-vector (including propagation constant and propagation direction) distributions of leaky SPPs in Fourier planes can be controlled, indicating tunable SPP propagation. These results hold promise for potential development of chemically synthesized single-crystalline metal nanoplates as plasmonic platforms in future applications.

Place, publisher, year, edition, pages
2015. Vol. 5, 13424
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Engineering and Technology
URN: urn:nbn:se:kth:diva-173433DOI: 10.1038/srep13424ISI: 000360037200001PubMedID: 26302955ScopusID: 2-s2.0-8494005659OAI: diva2:853973

QC 20150915

Available from: 2015-09-15 Created: 2015-09-11 Last updated: 2015-09-15Bibliographically approved

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Qiu, Min
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