Phase behavior in thin films of cylinder-forming block copolymers
Physical review letters. Bd. 89. H. 3. Ridge: American Physical Society 2002 S. 035501-1 - 035501-4
Erscheinungsjahr: 2002
ISBN/ISSN: 0031-9007
Publikationstyp: Zeitschriftenaufsatz
Sprache: Englisch
Doi/URN: 10.1103/PhysRevLett.89.035501
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Inhaltszusammenfassung
We have experimentally determined a phase diagram for cylinder-forming polystyrene-block-polybutadien-block-polystyrene triblock copolymer in thin films. The phase behavior can be modeled in great detail by dynamic density functional theory. Deviations from the bulk structure, such as wetting layer, perforated lamella, and lamella, are identified as surface reconstructions. Their stability regions are determined by an interplay between surface fields and confinement effects.
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Klassifikation
DDC Sachgruppe:
Physik