Berlin 2008 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 29: Polymerphysics I
CPP 29.7: Vortrag
Donnerstag, 28. Februar 2008, 11:15–11:30, C 130
Tomographic Techniques in Small-Angle X-Ray Scattering (SAXS) and Grazing-Incidence SAXS (GISAXS) — •Jan M. Feldkamp1, Christian G. Schroer1, Marion Kuhlmann2, Stephan V. Roth2, Andreas Timmann2, Rainer Gehrke2, Norbert Stribeck3, and Armando Almendarez-Camarillo3 — 1Institute for Structural Physics, TU Dresden, D-01062 Dresden, Germany — 2HASYLAB at DESY, Notkestr. 85, D-22607 Hamburg, Germany — 3Institute of Technical and Molecular Chemistry, Hamburg University, Bundesstrasse 45, D-20146 Hamburg, Germany
Small-Angle X-Ray Scattering (SAXS) has become a standard technique for the investigation of nano-structured materials. The emerging technique of Grazing Incidence Small-Angle X-Ray Scattering (GISAXS) enables one to study the nano-structure at the surface of materials and in thin films. These measurements provide valuable information to scientists from various fields, including material science, chemistry, polymer science, and biology.
In many cases the structure of a specimen is not homogeneous on a macroscopic scale. For these kinds of samples, scanning tomography provides additional real-space information. Using SAXS-tomography, the distribution of the nano-structure can be studied at each location on a virtual section through the sample. GISAXS-tomography allows one to map the distribution of the nano-structure on surfaces and in thin films.
In this presentation, these tomographic techniques are used to determine the structure of inhomogeneous polymer samples.