Deutsche Tagung f ¨ur Forschung mit ... - SNI-Portal

Nanostrukturen und Grenzflächen Poster: Do., 13:00–15:30 D-P301
Organic thin films and biomimetic surfaces
Bert Nickel 1 , Joachim Rädler 1
1 Ludwig-Maximilians-Universität, Geschwister-Scholl-Platz 1, 80539 München
Organic thin films exhibit semiconducting properties which make them suitable for field
effect transistors, and, thus, plastic electronics. In this contribution, we will highlight
how synchrotron diffraction can be used to access structure information [1,2,3] of such
films [Fig. 1 a], and how this information can be linked to device function [Fig. 1
b]. In the second part, we will discuss the application of neutron and synchrotron
beams to resolve the structure of solid-supported lipid membranes on various substrates
[4,5]. The structural information is compared to functional properties such as selfdiffusion
(membrane fluidity) or protein binding to such membranes. The diffraction
experiments are complemented by fluorescent microscopy experiments on the same
samples [Fig. 2].
In both parts, we will emphasis the need of these experiments in terms of instrumentation
and facility infrastructure. Suggestions concerning infrastructure at FRM-2 will
be presented.
[1] N. Koch, I. Salzmann, A. Vollmer, H. Weiss, B. Nickel, J.P. Rabe, , Phys. Rev.
Lett. 96 (2006)156803
[2] R. Ruiz, A. C. Mayer, G. G. Malliaras, B. Nickel et al., Appl. Phys. Lett. 85 (2004)
4926
[3] B. Nickel et al., Phys. Rev. B 70 (2004) 125401
[4] M. Hochrein, C. Reich, B. Krause, J. Rädler, B. Nickel, Langmuir 2 (2005)538 [5]C.
Reich, M. Hochrein, B. Krause, B. Nickel, Rev. Sci. Inst. 76 (2005) 095103
Fig. 1: Organic field effect transistor.
a) Morphology of the organic thin film
(AFM). b) Device performance.
Fig. 2: Solid supported membranes.
a) Schematic of the experimental
setup. (b) Microscopy image (a
phase-separating membrane front).