Magnetically induced flow and surface structures.

R. Richter¹ - J. Bläsing² - B. Reimann¹ - A. Rothert¹ - P. Rupp¹ - A. Zeuner¹ - I. Rehberg¹

¹ Experimentalphysik V, Universität Bayreuth, D-95440 Bayreuth, Germany
² Inst. für Exper. Physik, Universität Magdeburg, D-39016 Magdeburg, Germany

Abstract
The flow fields as well as the surface structures of magnetic fluids can strongly be influenced via magnetic forces. Starting with the Hagen--Poiseuille flow in an alternating field, continuing with drop formation and the Faraday instability finally the normal field instability of a resting fluid is addressed. In this way four different levels of interaction of magnetically induced flow and surface structures are presented. Figs 4, Refs 36.