Micrographs of the polystyrene particles.
Size distribution of the polystyrene particles.
Magnetization curve of the ferrofluid APG 512A denoted by open circles. The solid line is a fit of Eq. (11) to these data, utilizing a domain magnetization of . The inset displays the parameters and the size distribution of the magnetic particles obtained from this fit.
Structures forming in inverse ferrofluids with of nonmagnetic particles obtained with a long distance microscope. The magnetic field strength was applied. The field of view is .
Magnetosweep curves showing the storage modulus (◻) and the loss modulus (●) of the inverse ferrofluids as a function of magnetic field strength for different volume fraction and particle mean diameter of the nonmagnetic particles.
Storage modulus scaled according to Eq. (12) for inverse ferrofluids containing polystyrene monodisperse particles with (엯) and (▴), and polydisperse (∎) ones. The diagonal line represents the theory.
Average volume weighted diameter D and normalized polydispersity I of polystyrene particles used in inverse ferrofluids.
The magnetic field strength calculated for all the samples used in this paper. For polydisperse particles we indicate the according to the mean diameter in brackets for comparison.
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