Regensburg 2010 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 11: Poster: New Instruments and Methods
CPP 11.6: Poster
Montag, 22. März 2010, 16:30–18:00, Poster C
PolLux - a soft x-ray nanoprobe for soft matter studies — •Andreas Späth1, Jörg Raabe2, Christian Hub1, George Tzvetkov1,2, and Rainer Fink1 — 1Physical Chemistry, Univ. Erlangen, Erlangen, Germany — 2Swiss Light Source (SLS), Paul Scherrer Institut, Villigen, Switzerland
Zone-plate based x-ray microscopes offer a wide range of potential applications in fundamental and applied science, in physics, chemistry and material science or in the imaging of biosamples. The present PolLux scanning transmission x-ray microspectroscope (PolLux-STXM) is installed at a bending magnet beamline of the Swiss Light Source (SLS) operating from 260 - 1200 eV [1]. Using the latest zone-plate technology, imaging of lateral structures with 12 nm periods was achieved [2]. The available energy range is ideally suited for soft matter investigations. We will present spectromicroscopic results from various organic based materials, like organic hybrid materials (microspheres, microballoons), polymer films, organic nanocrystals or biosamples. The recent extension of the detection setup by an electron multiplier offers additional surface-enhanced detection. Thus, we are able to combine sulk and surface sensitivity. In addition, differential phase-contrast (DPC) imaging offers another detection scheme to improve image contrast. The complementary use of the various detection schemes offers improved knowledge on the investigated soft matter samples.
The project is funded by the BMBF under contract 05 KS7WE1.
1. J. Raabe, et al., Rev. Sci. Instrum. 79, 2008, 113704.
2. K. Jefimovs, et al., Phys. Rev. Lett. 99, 2007, 264801.