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Viscoelastic properties of ferrofluids

Physical Review E, 2010
The paper deals with theoretical study of non linear viscoelastic phenomena in ferrofluids placed in magnetic field. Our attention is focused on the study of nonstationary flow and Maxwell-like relaxation of the macroscopical viscous stress after alternation of the shear rate. We propose that these phenomena can be explained by finite rate of evolution
Chirikov, D N   +3 more
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Biomedical Engineered Ferrofluids

MRS Proceedings, 2007
AbstractThe characteristic of combining liquid behavior with and magnetic properties makes ferrofluids unique and it provides them a variety of applications, in particular in the medial field. For medical application ferrofluids are required to be stable at neutral pH and against high salt concentration.
Koser, Hur   +5 more
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Adhesion phenomena in ferrofluids

Physical Review E, 2004
One efficient way of determining the bond strength of adhesives is to measure the force or the work required to separate two surfaces bonded by a thin adhesive film. We consider the case in which the thin film is not a conventional adhesive material but a high viscosity ferrofluid confined between two narrowly spaced parallel flat plates subjected to ...
José A, Miranda   +2 more
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Ferrofluidic adaptive mirrors

Applied Optics, 2006
A magnetic liquid mirror based on ferrofluids was demonstrated. Magnetic liquid mirrors represent a major departure from solid mirror technology. They present both advantages and disadvantages with respect to established technologies. Stroke (from a fraction of a wave to several hundreds of micrometers), cost (a few dollars per actuator), and ...
P, Laird   +4 more
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A Novel Ferrofluidic Inclinometer

IEEE Transactions on Instrumentation and Measurement, 2007
Inertial transducers based on the use of ferrofluids as inertial mass can be of great interest due to their peculiarities and due to the advantages that they show when compared to traditional devices. Ferrofluids are special solutions of magnetic particles in a carrier liquid whose density and other physical features can be controlled by an external ...
ANDO', Bruno   +3 more
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Ferrofluid mediated nanocytometry

Lab Chip, 2012
We present a low-cost, flow-through nanocytometer that utilizes a colloidal suspension of non-functionalized magnetic nanoparticles for label-free manipulation and separation of microparticles. Our size-based separation is mediated by angular momentum transfer from magnetically excited ferrofluid particles to microparticles.
Ayse Rezzan, Kose, Hur, Koser
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Structural transformations in ferrofluids

Physical Review E, 2003
We present results of theoretical study of internal structural transformations in magnetic liquids consisting of identical spherical magnetic particles suspended in a carrier liquid. As the results show, when the dimensionless characteristic energy of magnetic interaction epsilon between particles is less than a certain critical value epsilon('), the ...
A Yu, Zubarev, L Yu, Iskakova
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Transport properties of ferrofluids

Physical Review E, 2003
Long-time self-diffusion coefficients of ferrofluid suspensions are derived from an effective Langevin equation approach. The dependences of these transport properties on the volume fraction of particles and the strength of interparticle interaction are investigated.
M, Hernández-Contreras   +1 more
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[Ferrofluids].

La Radiologia medica, 1987
Ferrofluids are colloidal suspensions of extremely small ferromagnetic particles, the physical properties of which belong to a very complex chapter of modern magnetohydro-dynamics. Because of that, ferrofluids will possibly open new perspectives of medical applications, both in diagnostic radiology and therapeutic oncology.
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Nanostab-Ferrofluide

2006
Since the first preparation of ferrofluids in the mids of the 60s the understanding of their behavior is a matter of both theoretical and experimental research. Especially the interaction of rheological and magnetic properties (known as the magnetoviscous effect) is a main concern for being the source of the unique behavior of ferrofluids.
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