Microdynamics of magnetic particles in complex fluids
Résumé
The agregation of magnetic particles in the presence of a magnetic field is the basic phenomenon which underlies all the physcis of magnetorheological (MR) fluids.Although these interactions are well understood when the suspending fluid is a simple liquid, new MR fluids based on dispersions of magnetic microparticles in a ferrofluid or MR elastomers based on dispersion of magnetic paryticles in a rubber matrix, present some unsusual properties which are not well described by conventional theories We analyse in this work, the motion of magnetic particles dispersed in a ferrofluid and submitted to a magnetic field and discuss the possible applications
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