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000204911 041__ $$aEnglish
000204911 1001_ $$0P:(DE-Juel1)131034$$aWiegand, Simone$$b0$$eCorresponding author$$ufzj
000204911 1112_ $$aColloquium Tokyo University$$cTokyo$$d2015-08-25 - 2015-08-25$$wJapan
000204911 245__ $$aThermal diffusion: An unsolved puzzle in Soft Matter Physics$$f2015-08-25
000204911 260__ $$c2015
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000204911 520__ $$aThermal diffusion: an unsolved puzzle in Soft Matter PhysicsSimone WiegandResearch Center Juelich, ICS – Soft condensed matter, D-52425 Juelich, GermanyE-mail: s.wiegand@fz-juelich.deIt turns out that a simple non-equilibrium environment created by a temperature gradient can be used to monitor the reaction kinetics of large proteins with small substrate molecules. This is probably caused by a change in the hydration layer of the protein which is influenced by subtle conformations changes induced by the binding of the substrate molecule. To get a better understanding of phenomenon we investigated systematically various small molecules, microemulsions and colloids by a holographic grating method called infrared thermal diffusion forced Rayleigh scattering (IR-TDFRS). Looking at the various systems we can identify certain rules of thumb which will be discussed. Open questions such as the radial dependence of the thermal diffusion coefficient and its relation with the interfacial tension and charge effects are considered.
000204911 536__ $$0G:(DE-HGF)POF3-551$$a551 - Functional Macromolecules and Complexes (POF3-551)$$cPOF3-551$$fPOF III$$x0
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000204911 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)131034$$aForschungszentrum Jülich GmbH$$b0$$kFZJ
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