Dresden 2014 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 98: Plasmonics and Nanooptics V

O 98.9: Vortrag

Freitag, 4. April 2014, 12:30–12:45, TRE Ma

Matrix induced growth: a versatile tool for preparing crystalline Au nanoparticles for photonic applications — •Christian Katzer¹, Philipp Naujok¹, Hendrik Bernhardt¹, Gabriele Schmidl², Robert Müller², Wolfgang Fritzsche², and Frank Schmidl² — ¹Institut für Festkörperphysik, Friedrich-Schiller-Universität Jena, Helmholzweg 5, D-07743 Jena — ²Institute of Photonic Technology (IPHT), Albert-Einstein-Str. 9, D-07745 Jena

In the past years different methods such as wet chemical synthesis were used to fabricate metal nanoparticles for photonic applications. In order to overcome typical solution based problems like aggregation of particles, new in-situ methods of preparing them directly on the substrate surface are highly favoured. The authors present a novel in-situ method of fabricating crystalline gold nanoparticles by a thin film controlled self-organization technique using two different thin film matrices (YBa₂Cu₃O_7−δ and SrTiO₃). We will show that it is possible to individually control the size and the distribution of the nanoparticles as well as their shape. Thus, it is also possible to fabricate highly anisotropic particles which are of great interest due to the local field enhancement. All can be achieved by adjusting process parameters that are easily accessible. As one might have to extract the nanoparticles from the surrounding matrix material to realise photonic applications we will present our findings concerning the matrix dissolution.

[1] C. Katzer et al., J. Nanopart. Res. 14, 1285 (2012)

[2] C. Katzer et al., Proc. SPIE 8807, Nanophotonic Materials X, doi:10.1117/12.2024058