|
Authors
|
Müller-Buschbaum, P. ; Gutmann, J.S. ; Lorenz-Haas, C. ; Mahltig, B. ; Stamm, M. ; Petry, W.
|
|
Title
|
Early Stages of Film Creation in Thin Diblock Copolymer Films
|
|
Date
|
10.10.2001
|
|
Number
|
9649
|
|
Abstract
|
Thin poly(styrene-<I>block</I>-<I>p</I>-methylstyrene) diblock copolymer films on top of silicon substrateswere examined right after preparation and during the early stages of annealing. Using specular andoff-specular X-ray scattering as well as scanning force microscopy, the film morphology is determined.With the spin-coating technique films are prepared which exhibit a roughness correlation between thesubstrate and the copolymer surface within a limited film thickness and molecular weight range rightafter preparation. The transferred part of the roughness spectrum of the substrate is probed and explainedas a morphology of a frozen liquid with a surface bending rigidity. During annealing the energeticallyunfavorable roughness replication decays, and an internal ordering is formed. The decay of long-rangecorrelation is explained by a surface diffusion where diffusion is slowed down as compared to bulk behavior.
|
|
Publisher
|
Macromolecules
|
|
Wikidata
|
Q61984295
|
|
Citation
|
Macromolecules 34 (2001) 7463-7470
|
|
DOI
|
https://doi.org/10.1021/MA002181V
|
|
Tags
|
consistent-field calculations surface-induced orientation monte-carlo simulations x-ray reflection polymer-films microphase separation scattering interfaces roughness multilayers
|
