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Dresden 2011 – scientific programme

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 4: Focus Session "Nanoparticles, Nanocrystals and Colloids" (jointly with MA)

CPP 4.3: Topical Talk

Monday, March 14, 2011, 11:15–11:45, HSZ 103

Magnetic Fluids - Properties and Applications — •Stefan Odenbach — TU Dresden, Chair of Magnetofluiddynamics, 01062 Dresden

Suspensions of magnetic nanoparticles in approriate carrier liquids - so called ferrofluids - exhibit normal liquid behaviour coupled with superparamagnetic properties. The use of appropriate surfactants for the particles enables longterm stabilisation of the suspensions making them suitable for numerous technical and even medical applications.

The peculiarity of ferrofluids is given by the fact that moderate magnetic fields in the order of 10mT can significantly change the fluids properties - e.g. their viscosity - and can also provide the possibility to control the flow of such fluids.

Within the presentation a general (partly experimental) introduction of ferrofluids, their properties and applications will be followed by a discussion of magnetic flow control for biomedical applications of ferrofluids. This problem - actually discussed within the frame of novel cancer therapies - enlightens the strong interdisciplinarity of ferrofluid reserach covering fields from chemistry over physics and engineering towards medicine.

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