Quasi-isotropic Surface Plasmon Polariton Generation through Near-Field Coupling to a Penrose Pattern of Silver Nanoparticles

Verre, Ruggero, 1985 (author): Chalmers tekniska högskola,Chalmers University of Technology

Antosiewicz, Tomasz, 1981 (author): Chalmers tekniska högskola,Chalmers University of Technology

Svedendahl, Mikael, 1984 (author): Chalmers tekniska högskola,Chalmers University of Technology,Chalmers University of Technology, Sweden

Lodewijks, Kristof, 1984 (author): Chalmers tekniska högskola,Chalmers University of Technology

Shegai, Timur, 1982 (author): Chalmers tekniska högskola,Chalmers University of Technology

Käll, Mikael, 1963 (author): Chalmers tekniska högskola,Chalmers University of Technology

(creator_code:org_t)

2014-09-10
2014
English.
In: ACS Nano. - : American Chemical Society (ACS). - 1936-086X .- 1936-0851. ; 8:9, s. 9286-9294

Related links:: http://dx.doi.org/10...; show more...; https://doi.org/10.1...; https://research.cha...; https://urn.kb.se/re...; show less...

Abstract Subject headings

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 nanopartide 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.

TEKNIK OCH TEKNOLOGIER -- Nanoteknik (hsv//swe)
ENGINEERING AND TECHNOLOGY -- Nano-technology (hsv//eng)
NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)

By the author/editor: Verre, Ruggero, ...; Antosiewicz, Tom ...; Svedendahl, Mika ...; Lodewijks, Krist ...; Shegai, Timur, 1 ...; Käll, Mikael, 19 ...

About the subject

NATURAL SCIENCES: NATURAL SCIENCES; and Physical Science ...; and Atom and Molecul ...

By the university: Chalmers University of Technology; Royal Institute of Technology

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