Regensburg 2007 – wissenschaftliches Programm

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DS: Fachverband Dünne Schichten

DS 15: Poster Session

DS 15.16: Poster

Dienstag, 27. März 2007, 15:00–17:00, Poster B

Surface plasmonic properties in swift heavy ion (SHI) treated Au, Ag, and Cu based polymer-metal nanocomposite films — •Venkata Sai Kiran Chakravadhanula¹, Christian Hanisch¹, Henry Greve¹, Dietmar Fink², Vladimir Zaporojtchenko¹, and Franz Faupel¹ — ¹Chair for Multicomponent Materials, Technical Faculty of CAU Kiel, Kaiserstrasse2, 24143 Kiel, Germany — ²Hahn-Meitner-Institut, Department SF4, P.O.Box 39 01 28, Glienicker Str. 100, D-14109 Berlin, Germany

Surface plasmonic properties of polymer-metal nanocomposites has gained interest in the field of nanocomposites for optical applications. In the present work, various Au, Ag, and Cu based polymer-metal nanocomposites were prepared by employing a vapor phase co-sputtering technique. Irradiation was performed of these nanocomposites by 350 MeV Au ions with fluences of 1×10¹¹, 5×10¹⁰, 2.5×10¹⁰ and 1.25×10¹⁰ at the HMI, Berlin. The characterizations of the optically functional nanocomposite materials were carried out by transmission electron microscopy, energy dispersive X-ray analysis, and UV-visible spectroscopy. The UV extinction spectra of the pristine samples show a sharp absorption maximum at the surface plasmon resonant wavelength according to their geometry and material properties. Depending on the variation in the SHI fluences, changes were observed in the microstructure and the optical spectra. These will be discussed in terms of ion material interactions.