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Dewetting of thin diblock copolymer films: Spinodal dewetting kinetics

MPG-Autoren
http://pubman.mpdl.mpg.de/cone/persons/resource/persons47980

Gutmann,  Jochen S.
MPI for Polymer Research, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons48344

Lorenz-Haas,  C.
MPI for Polymer Research, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons49023

Wunnicke,  O.
MPI for Polymer Research, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons48792

Stamm,  Manfred
MPI for Polymer Research, Max Planck Society;

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Zitation

Müller-Buschbaum, P., Gutmann, J. S., Lorenz-Haas, C., Wunnicke, O., Stamm, M., & Petry, W. (2002). Dewetting of thin diblock copolymer films: Spinodal dewetting kinetics. Macromolecules, 35(6), 2017-2023.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-000F-6666-1
Zusammenfassung
The stability of thin diblock copolymer films with respect to the annealing above the microphase separation temperature is investigated on long time scales and at different film thicknesses. Poly(styrene-block-p-methylstyrene) diblock copolymer films on top of silicon substrates are examined with scanning force microscopy and off-specular X-ray scattering. At film thickness below the lamellar spacing of the bulk material a dewetting is observed. The kinetics of the film destabilization are explainable within a spinodal dewetting model. The observed dewetting structures belong to a wet dewetting. In the case of film thicknesses which enable the buildup of a few lamellae no sign of instability was detected.