Regensburg 2007 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 44: Poster Session II (Semiconductors; Oxides and Insulators: Adsorption, Clean Surfaces, Epitaxy and Growth; Surface Chemical Reactions and Heterogeneous Catalysis; Surface or Interface Magnetism; Solid-Liquid Interfaces; Organic, Polymeric, Biomolecular Films; Particles and Clusters; Methods: Atomic and Electronic Structure; Time-resolved Spectroscopies)

O 44.4: Poster

Mittwoch, 28. März 2007, 17:00–19:30, Poster C

Surface kinetics and structure of thin polymer films — •Christian Vree and S. G. Mayr — I. Physikalisches Institut, Georg-August-Universität Göttingen, Friedrich-Hund-Platz 1, D-37077 Göttingen

Structure formation at surfaces during thin film deposition is of great scientific interest due to the demand for smooth or regularly structured surfaces and interfaces for miniaturized functional films in science and technology. The deposition processes which govern morphology evolution during vapour deposition of polymer films are still poorly understood and need closer investigation.

In the present work this is achieved by a combined experimental - simulational study:

While the kinetics of single chains on polymer surfaces was investigated with MD simulations, experimentally Poly (Bisphenol A carbonate) (BPAPC) thin films were evaporated in a vacuum chamber. Surface morphologies were investigated using scanning force (SFM) and scanning electron microscopy (SEM). Fourier transform infrared spectroscopy (FTIR) and size exclusion chromatography (SEC) were performed for a detailed chemical characterization. It is found, that the rms roughness decreases rapidly, once closed surfaces are obtained at thicknesses as high as 30 nm.

This work was supported by the DFG SFB 602 (TP B3), as well as the GIF No. 1428-303.1/2004.