Dresden 2006 – wissenschaftliches Programm

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DS: Dünne Schichten

DS 24: Poster presentation

DS 24.75: Poster

Dienstag, 28. März 2006, 15:00–17:30, P2

Process characterization of pulsed laser deposited PMMA — •Britta Lösekrug, Thorsten Scharf, Erik Süske, and Hans-Ulrich Krebs — Institut für Materialphysik, Universität Göttingen, Friedrich-Hund-Platz 1, D-37077 Göttingen

The pulsed laser deposition (PLD) is a flexible and effective method for producing thin films of different materials, also polymers like PMMA poly (methyl methacrylate), which is an attractive coating material. Thin films of PMMA consist of two components, one fraction with molecular weight well below that of the target material and a second fraction, which is cross-linked. The non-cross-linked fraction forms droplets on the flat surface of the cross-linked part. Origins in the deposition process of these two components are different and show different angular distributions. By varying the laser fluence during deposition the amount of cross-linking is changed. Another possibility to influence the deposition process is a variation of the absorption coefficient by embedding a strong absorbing material. In this contribution the influence of these different parameters on the laser deposited PMMA films is presented and discussed.