English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

We investigate the phase behavior of symmetric AB diblock copolymers confinedinto a thin film. The film boundaries are parallel, impenetrable and attractthe A component of the diblock copolymer. Using a self-consistent fieldtechnique [M.W. Matsen, J.Chem.Phys. {\bf 106}, 7781 (1997)], we study theordered phases as a function of incompatibility $\chi$ and film thickness inthe framework of the Gaussian chain model. For large film thickness and smallincompatibility, we find first order transitions between phases with differentnumber of lamellae which are parallel oriented to the film boundaries. At highincompatibility or small film thickness, transitions between parallel orientedand perpendicular oriented lamellae occur. We compare the self-consistent fieldcalculations to Monte Carlo simulations of the bond fluctuation model for chainlength N=32. In the simulations we quench several systems from $\chi N=0$ to$\chi N=30$ and monitor the morphology into which the diblock copolymersassemble. Three film thicknesses are investigated, corresponding to paralleloriented lamellae with 2 and 4 interfaces and a perpendicular orientedmorphology. Good agreement between self-consistent field calculations and MonteCarlo simulations is found.Comment: to appear in J.Chem.Phy

Symmetric diblock copolymers in thin films. I. Phase stability in self-consistent field calculations and Monte Carlo simulations