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Andreas Hohenau
Researcher at University of Graz
Publications - 82
Citations - 5670
Andreas Hohenau is an academic researcher from University of Graz. The author has contributed to research in topics: Surface plasmon & Plasmon. The author has an hindex of 34, co-authored 79 publications receiving 5394 citations. Previous affiliations of Andreas Hohenau include Schrödinger & MacDiarmid Institute for Advanced Materials and Nanotechnology.
Papers
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Journal ArticleDOI
Optical properties of two interacting gold nanoparticles
W. Rechberger,Andreas Hohenau,Alfred Leitner,Joachim R. Krenn,Bernhard Lamprecht,Franz R. Aussenegg +5 more
TL;DR: In this paper, surface plasmon excitation in pairs of identical Au nanoparticles by optical transmission spectroscopy was studied and it was shown that with decreasing interparticle distance the surface plasm resonance shifts to longer wavelengths for a polarization direction parallel to the long particle pair axis whereas a blueshift is found for the orthogonal polarization.
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Optimized surface-enhanced Raman scattering on gold nanoparticle arrays
Nordin Félidj,Jean Aubard,Georges Lévi,Joachim R. Krenn,Andreas Hohenau,Gerburg Schider,Alfred Leitner,Franz R. Aussenegg +7 more
TL;DR: In this article, the maximum of the surface plasmon resonance of elongated gold nanoparticles to a wavelength, the position of which is precisely midway between the exciting laser line and the Raman line, was used to optimize the surface-enhanced Raman scattering effect.
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Plasmon dispersion relation of Au and Ag nanowires
Gerburg Schider,Joachim R. Krenn,Andreas Hohenau,Harald Ditlbacher,Alfred Leitner,Franz R. Aussenegg,William L. Schaich,Irina Puscasu,Brian Monacelli,Glenn D. Boreman +9 more
TL;DR: In this paper, surface plasmon modes on silver and gold nanowires of a fixed cross section and different lengths, produced by electron beam lithography were determined by extinction spectroscopy and can be interpreted in terms of standing Plasmon polariton waves.
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Dielectric stripes on gold as surface plasmon waveguides
B. Steinberger,Andreas Hohenau,Harald Ditlbacher,Andrey L. Stepanov,Aurélien Drezet,Franz R. Aussenegg,A. Leitner,Joachim R. Krenn +7 more
TL;DR: In this paper, surface plasmon polariton (SPP) waveguiding by SiO2 stripes on gold thin films is described by using the effective index method, which provides relatively large effective refractive indices compared to other SPP waveguide schemes.
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Leakage radiation microscopy of surface plasmon polaritons
A. Drezet,Andreas Hohenau,Daniel Koller,Andrey L. Stepanov,Harald Ditlbacher,B. Steinberger,Franz R. Aussenegg,Alfred Leitner,Joachim R. Krenn +8 more
TL;DR: In this paper, the principle and methodology of leakage radiation microscopy (LRM) applied to surface plasmon polaritons (SPPs) is reviewed. And the authors show that LRM is a versatile optical far-field method allowing direct quantitative imaging and analysis of SPP propagation on thin metal films.