Dresden 2009 – wissenschaftliches Programm

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DS: Fachverband Dünne Schichten

DS 29: Nanoengineered Thin Films II

DS 29.6: Vortrag

Donnerstag, 26. März 2009, 12:30–12:45, GER 37

Metal Nanostructures bound to Dielectric Substrates for Plasmonic Applications — •Marisa Mäder, Susanne Perlt, Markus Lippmann, Jürgen Gerlach, Thomas Höche, and Bernd Rauschenbach — Leibniz-Institut für Oberflächenmodifizierung e.V., Permoserstraße 15, 04109 Leipzig, Germany

Metal nanospheres, especially when arranged in a predefined way, facilitate surface plasmon related applications [1]. In this paper, a method called Diffraction Mask Projection Laser Ablation (DiMPLA) [2] is used to create such nanostructres. The straightforward method uses an Excimer laser pulse (KrF, 248 nm, 25 ns) whose intensity is laterally modified by a phase mask and subsequently demagnified (15x, 36x, 50x) by a reflective objective. Exposure of a thin metal film on a dielectric substrate leads to the formation of metal nanostructures. Dependent on the phase mask that is applied in the setup, the arrangement of nanospheres on the sample can be controlled as desired. It is even possible to create non-regular pattern arrangements. Dependencies of the nanospheres on different parameters and some first steps into plasmonic applications are presented in this paper.

[1] W. M. Saj, Optics Express 13, 2005, 4818

[2] M. Maeder et al., Phys. Stat. Sol. (RRL) 2, 2008, 34