Structure of thin block copolymer films studied by X-ray reflectivity |
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Authors: | R. Mutter, G. Strobl B. Stü hn |
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Affiliation: | (1) Fakultät für Physik und Materialforschungszentrum (FMF), Universität Freiburg, W-7800 Freiburg, Germany |
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Abstract: | Summary X-ray reflectivity may be used to determine the internal structure of thin polymer films. An electron density difference of 10% for polystyrene and polyisoprene is sufficient to distinguish between a random distribution of lamellae, complete orientation parallel to the substrate surface and a surface induced formation of lamellae. The disappearance of the lamellar Bragg-peaks, with heating of the film, shows the transition into the disordered state. |
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