Regensburg 2013 – wissenschaftliches Programm
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DF: Fachverband Dielektrische Festkörper
DF 19: Poster 2
DF 19.3: Poster
Mittwoch, 13. März 2013, 15:00–17:30, Poster B2
Optical resonances of self-organized monocrystalline Au nanoparticles embedded in a SrTiO3 matrix — •Hendrik Bernhardt1, Christian Katzer1, Christke Sandra1, Frank Schmidl1, Gabriele Schmidl2, Wolfgang Fritzsche2, Jörg Petschulat3, Thomas Pertsch3, and Markus Rettenmayr4 — 1Institut für Festkörperphysik, Friedrich-Schiller-Universität Jena, Helmholtzweg 5, D-07743 Jena, Germany — 2Institute of Photonic Technology, IPHT, Albert-Einstein-Straße 9, D-07745 Jena, Germany — 3Institut für Angewandte Physik, Friedrich-Schiller-Universität Jena, Max-Wien-Platz 1, D-07743 Jena, Germany — 4Institut für Materialwissenschaft und Werkstofftechnologie, Friedrich-Schiller-Universität Jena, Löbdergraben 32
Gold nanoparticles in dielectric thin films are well known as plasmonically active material due to the excitation of localized surface plasmon resonances. Apart from the dielectric properties of the ambient medium and the inter-particle distances also shape and size of the particles can influence the resonance frequency. In this work, we report on ellipsoidal and orientated Au nanoantennas, which can be prepared in a crystalline high index ambient, i.e. SrTiO3 (STO), via laser ablation. By controlling the deposition parameters, we are able to tune size, shape and distribution density of the crystalline gold nanoparticles. The plasmonic activity of the highly oriented nanoantennas thereby is observed in transmission spectroscopy experiments. Furthermore we will present transmission electron microscopy and x-ray diffraction data.