Berlin 2012 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 15: Poster: New Instruments and Methods
CPP 15.1: Poster
Dienstag, 27. März 2012, 18:15–20:15, Poster A
Investigating microfluidics at interfaces with GISAXS — •Volker Körstgens1, Kuhu Sarkar1, Martin Trebbin2, Matthias Schwartzkopf3, Adeline Bufffet3, Stephan V. Roth3, Stephan Förster2, and Peter Müller-Buschbaum1 — 1TU München, Physik-Department, LS Funktionelle Materialien, James-Franck-Str. 1, 85748 Garching, Germany — 2Universität Bayreuth, Physikalische Chemie I, 95447 Bayreuth, Germany — 3HASYLAB at DESY, 22603 Hamburg, Germany
X-rays are a powerful probe for the investigation of flow and processes in microfluidic systems. In pioneering experiments it has been shown that with GISAXS (grazing incidence small angle x-ray scattering), using a specially designed microfluidic cell, surface sensitive investigations are also possible [1]. With the highly brillant x-ray beam available at the beamline MiNaXS of the PETRA III synchrotron source a time resolved as well as a position resolved GISAXS investigation of structural changes at the surface in contact with the flowing liquid becomes possible. The microfluidic cell design offers versatile options including mixing experiments and chemical reactions. Swelling processes, the attachment of particles and also the detachment of unwanted detrimental films can be investigated. The envisaged high time resolution will allow to follow the corresponding kinetics.
This work has been financially supported by the BMBF (grant number 05K10WOA).
[1] J.-F. Moulin et al., Rev. Sci. Instrum. 79, 015109 (2008).