Regensburg 2019 – wissenschaftliches Programm

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ST: Fachverband Strahlen- und Medizinphysik

ST 4: Poster session

ST 4.4: Poster

Dienstag, 2. April 2019, 14:00–16:00, Poster B1

Using ultraviolet light for velocity determination of magnetic nanoparticles in external magnetic fields. — •Jörg Fusenig¹, Robert Englert¹, Sven Mantowsky¹, Tobias Roth¹, Hellmut Hupe¹, and Marc Schneider² — ¹Trier University of Applied Sciences, Engineering and Technology, D-54293 Trier — ²Saarland University, Biopharmaceutics and Pharmaceutical Technology, D-66123 Saarbrücken

This contribution deals with the linear transportation of magnetic nanoparticles by the use of a linear moving field device. To understand the acting forces and how they are affected by the viscosity, the transport process through transparent cylindrical tubes filled with different media can be monitored. In order to access the velocity of the magnetite particles, a stand-alone device equipped by an ultraviolet light transmission tool is developed. Locally differing volume concentrations within the moving particle cloud lead to a time-dependent change in the attenuation of the transmitted light which is a measure for the clouds velocity. Simultaneously, the magnetic flux density is recorded with a set of hall sensors. The device is immersible in water, as the field exciting coils are fully submerged in a flow-through vessel to transfer power losses. We test the performance of the setup by a comparison with a commercial UV/Vis spectrometer and a magnetometer, respectively.