| Abstract
| - We propose a theory of nanopattern formation in ultrathin films obtained by the spreading of A-B diblock copolymerson a surface. A blocks are strongly adsorbed (spread) on the substrate, and the strength of the adsorption can be varied.B blocks are incompatible with the substrate, but they can spread atop the layer of the A blocks. We predict disk-shapedmicelles ordered with hexagonal symmetry and parallel stripe-shaped micelles and bilayers to be stable. The type ofresulting structure and its geometrical parameters depend on the composition of the copolymer and interaction parameters.We interrelate these results with those obtained for the case of the spreading of both blocks on the substrate,19 andwe construct a unified phase diagram.
|
