Dresden 2009 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 27: Poster Session I (Methods: Scanning probe techniques; Methods: Atomic and electronic structure; Methods: Molecular simulations and statistical mechanics; Oxides and Insulators: Clean surfaces; Oxides and Insulators: Adsorption; Oxides and Insulators: Epitaxy and growth; Semiconductor substrates: Clean surfaces; Semiconductor substrates: Epitaxy and growth; Semiconductor substrates: Adsorption; Nano- optics of metallic and semiconducting nanostructures; Electronic structure; Methods: Electronic structure theory; Methods: other (experimental); Methods: other (theory); Solutions on surfaces; Epitaxial Graphene; Surface oder interface magnetism; Phase transitions; Time-resolved spectroscopies)
O 27.65: Poster
Dienstag, 24. März 2009, 18:30–21:00, P2
Investigation of antenna resonances for SERS in the near infrared — •Daniel Weber1, Frank Neubrech1, Christina Bauer2, Annemarie Pucci1, and Harald Giessen2 — 1Kirchhoff-Institut für Physik, Universität Heidelberg, Deutschland — 24. Physikalisches Institut, Universität Stuttgart, Deutschland
Gold nanorod arrays were investigated by infrared (IR) microscopy using synchrotron radiation at the Angströmquelle Karlsruhe (ANKA). The regularly shaped gold nanorods (width and height about 100 nm) with lengths between 400 and 1200 nm were prepared by electron beam lithography at the 4th Physics Institute, University of Stuttgart. The nanorods are placed on quartz glass (Herasil), which is transparent for IR radiation in the near infrared spectral range. Comparable to our results from former IR spectroscopic studies of gold nanowires deposited on zinc sulphide substrates, we observed antenna-like plasmon resonances, which are accompanied by an enhanced electromagnetic field in the vicinity of the nanorods. We intend to exploit this field enhancement for surface-enhanced Raman scattering (SERS) by using an IR laser as exciting light source