Dresden 2009 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 28: POSTERS Interfaces and Thin Films
CPP 28.24: Poster
Mittwoch, 25. März 2009, 17:00–19:00, P3
Polymer phase separation on surface energy patterns generated by single pulse laser interference — •Alexander Foerste1, Tobias Geldhauser2, Johannes Boneberg2, Paul Leiderer2, Stefan Walheim1, and Thomas Schimmel1,3 — 1Institute of Nanotechnology (INT), Forschungszentrum Karlsruhe, Germany — 2Department of Physics, Universität Konstanz, Germany — 3Institute of Applied Physics and DFG-Center for Functional Nanostructures (CFN), Universität Karlsruhe, Germany
Single pulse laser interference lithography is used to structure self-assembled monolayers of thiols on gold. The molecular desorption process is investigated by attenuated total reflection measurements. The resulting surface energy patterns are investigated by AFM and are used to control the phase morphology of a polymer blend - subsequently spin-cast on these structured surfaces. The laser lithography was realized with different wavelengths (266, 532, and 1064 nm) which shows that the structuring is a thermal process. As a first demonstration of this process, structures down to 800 nm period and 300 nm width are fabricated. Ref.: Langmuir 24 (22), 13155-13160 (2008)