title: Sound damping in ferrofluids: magnetically enhanced compressional viscosity.
abstract: The damping of sound waves in magnetized ferrofluids is investigated and shown to be considerably higher than in the nonmagnetized case. This fact may be interpreted as a field-enhanced, effective compressional viscosity-in analogy to the ubiquitous field-enhanced shear viscosity that is known to be the reason for many unusual behaviors of ferrofluids under shear.
authors.affiliation: Max-Planck-Institut für Polymerforschung, D-55128 Mainz, Germany. muehw@ing.boehringer-ingelheim.com
authors.forename: Hanns Walter
authors.initials: HW
authors.lastname: Müller
authors.forename: Yimin
authors.initials: Y
authors.lastname: Jiang
authors.forename: Mario
authors.initials: M
authors.lastname: Liu