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Symmetric Diblock Copolymers in Thin Films (II): Comparison of Profiles between Self-Consistent Field Calculations and Monte Carlo Simulations | | Thorsten Geisinger
; Marcus Mueller
; Kurt Binder
; | | Date: |
8 Jun 1999 | | Subject: | Statistical Mechanics; Soft Condensed Matter | cond-mat.stat-mech cond-mat.soft | | Affiliation: | Joh. Gutenberg Universitaet, Mainz, Germany | | Abstract: | The structure of lamellar phases of symmetric $AB$ diblock copolymers in a thin film is investigated. We quantitatively compare the composition profiles and profiles of individual segments in self-consistent field calculations with Monte Carlo simulations in the bond fluctuation model for chain length N=32 and $chi N=30$. Three film thicknesses are investigated, corresponding to parallel oriented lamellae with 2 and 4 interfaces and a perpendicular oriented morphology. Taking account of capillary waves, we find good quantitative agreement between the Monte Carlo simulations and the self-consistent field calculations. However, the fluctuations of the local interfacial position are strongly suppressed by confinement and mutual interactions between lamellae. | | Source: | arXiv, cond-mat/9906113 | | Services: | Forum | Review | PDF | Favorites | |
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