Abstract
Microstructured films are formed on micropatterned substrates. Film formation on hydrophilic micrometer-sized isles allows to prepare amorphous films of polyethylene oxide (PEO) which are metastable with respect to crystallisation. Heterogeneous nucleation can be initiated by contact with an AFM tip. The controlled nucleation in metastable micropatterned films enables us to study the propagation of crystallisation fronts within confined areas. The crystallisation process within the ultrathin micropatterned film segments favours branched lamellae structures typical for diffusion limited aggregation (DLA) processes. We observed a strong influence of confined geometries on the morphological features of branched PEO lamellae.
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Braun, HG., Meyer, E., Wang, M. (2003). Dendritic Growth of Polyethylene Oxide on Patterned Surfaces. In: Reiter, G., Sommer, JU. (eds) Polymer Crystallization. Lecture Notes in Physics, vol 606. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-45851-4_13
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DOI: https://doi.org/10.1007/3-540-45851-4_13
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