Regensburg 2004 – wissenschaftliches Programm
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CPP: Chemische Physik und Polymerphysik
CPP 14: SYMPOSIUM: Understanding and Controlling Complex Structures: From Synthetic Polymers to Biomaterials II
CPP 14.9: Vortrag
Dienstag, 9. März 2004, 16:45–17:00, H 37
Polymeric nanostructures created by destabilization of confined thin films — •P. Müller-Buschbaum1, R. Cubitt2, and W. Petry1 — 1TU München Physik Department LS E13, James-Franck-Str.1, 85747 Garching — 2ILL, b.p. 156, 38042 Grenoble (France)
the concept of self-assembly. Recently, it was shown that from a destabilization of confined ultra-thin films nano-structured polymeric surfaces result [1]. Following the scaling laws of dewetting, due to the reduced amount of polymeric material available, the size of the resulting structures decreases with decreasing film thickness. Destabilizing confined ultra-thin diblock copolymer films thus offers the opportunity to introduce two intrinsic lateral length scales, the characteristic periodicity of the micro phase separation structure Lo and the most prominent in-plane length of the dewetting structure Λ. While on a local scale the surface structure is nicely pictured by atomic force microscopy (AFM) to obtain a statistically significant information scattering is helpful. With grazing incidence small-angle scattering a length regime from molecular to micrometer-sized and thus comparable to AFM is addressed [2].
[1] P.Müller-Buschbaum, R.Cubitt, W.Petry, Langmuir 19, 7778 (2003)
[2] P. Müller-Buschbaum, Anal.Bioanal.Chem. 376, 3 (2003)