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O: Fachverband Oberflächenphysik
O 34: Poster Session I (Graphene; Plasmonics and nanooptics; Coherence and coherent control in nanophotonics and plasmonics)
O 34.52: Poster
Tuesday, March 27, 2012, 18:15–21:45, Poster E
Fabricating Confined Nanorod Arrays for Nano-optical Applications — •Vera Hoffmann1, René Kullock1, Mathias Böhm1, Gunther Scheunert2, and Lukas M. Eng1 — 1Department of Applied Photophysics, TU Dresden, Dresden, Germany — 2Department of Physics and Astronomy, Queen's University Belfast, Belfast, UK
Two-dimensional nanorod arrays made of materials such as gold, silver, cobalt etc. show optical properties [1,2] that provide the basis for novel plasmonic devices [3]. To go a step further towards low-cost integration into existing technologies, the electrochemical growth of such nanorods in self-organized porous alumina masks deposited onto a thin gold film is of great interest. In this study, we present a novel technique in which we restrict the nanorod growth to a confined nanoscale surface area only. By pre-structuring the underlying gold metal film, the growth of nanorods is confined to the edges of this structured area. Hence, the geometry and the plasmonic properties of the arrays can be modified, which makes them very promising and tunable for applications such as waveguides, nanoantennas, or in data storage devices.
[1] R. Kullock et al., Optics Express 16, 21671 (2008) [2] R. Kullock et al., J. Opt. Soc. Am. B 27, 1819 (2010) [3] A.V. Kabashin et al., Nat. Mater. 8, 867 (2009)