Dresden 2009 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 13: POSTERS Polymer Physics

CPP 13.6: Poster

Dienstag, 24. März 2009, 14:00–16:30, P3

Quantitative analysis of block copolymer microdomain dynamics — •Christian Riesch, Eike-Christian Spitzner, and Robert Magerle — Chemische Physik, TU Chemnitz, D-09107 Chemnitz

Microdomain ordering in a thin film of a cylinder-forming diblock copolymer is observed during vapour annealing by in situ atomic force microscopy. The ordering process is observed with high temporal resolution of ∼ 60 s/frame over several hours. The domain coarsening in the resulting image series is analysed using local and global measures of order. We compute orientation maps, local curvature and correlation lengths; furthermore the temporal evolution of individual defects is tracked. The experimental results are compared with the microdomain dynamics observed in cell dynamics simulations of a similar system. We investigate the influence of film thickness and polymer-substrate interactions.