Results 211 to 220 of about 12,794 (266)
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Capillary viscosimetry on ferrofluids
Journal of Physics: Condensed Matter, 2008Experiments performed for different ferrofluids under shear flow have shown that an increase of the magnetic field strength applied to the sample yields an increase of the fluid's viscosity, the so called magnetoviscous effect. It has been shown that the magnitude of the effect is strongly related to the modification of the microstructure of ...
L M, Pop, S, Odenbach
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An ultrasonic characterization of ferrofluid
Ultrasonics, 2009Nanoparticles of Cr(2)O(3) are prepared through hydrothermal synthesis process using CrO(3)/PVA in aqueous solution using sucrose as a reducing agent. The calcination temperature is taken 300 and 350 degrees C. XRD and SEM of the powdered Cr(2)O(3) particles are done for the characterization. The average particle size is found 30-80 nm.
D K, Singh, D K, Pandey, R R, Yadav
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The Physics of Fluids, 2019
The effect of the dipolar particle interactions on the behavior of ferrofluids under a shear flow is not yet well understood. The equilibrium magnetization in the absence of flow is studied in Paper I [A. P. Rosa, G. C. Abade, and F. R.
A. P. Rosa, F. R. Cunha
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The effect of the dipolar particle interactions on the behavior of ferrofluids under a shear flow is not yet well understood. The equilibrium magnetization in the absence of flow is studied in Paper I [A. P. Rosa, G. C. Abade, and F. R.
A. P. Rosa, F. R. Cunha
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Adhesion phenomena in ferrofluids
Physical Review E, 2004One 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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Ferrofluids for heat transfer enhancement under an external magnetic field
International Journal of Heat and Mass Transfer, 2018Overheating of power electronic devices has become a significant issue due to their continued miniaturization and increased heat flux that needs to be dissipated.
N. G. J. Gui +3 more
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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 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, 2007Inertial 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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Exploring ferrofluids for heat transfer augmentation
Journal of Magnetism and Magnetic Materials, 2019We explore the potential of ferrofluids for heat transfer augmentation, via numerical simulations using water-based ferrofluids flowing between parallel plates (laminar flows; Reynolds number (Re) 〈1 0 0), exposed to external magnetic fields, produced by
R. Shah, S. Khandekar
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On the accurate large-scale simulation of ferrofluids
ACM Transactions on Graphics, 2019 We present an approach to the accurate and efficient large-scale simulation of the complex dynamics of ferrofluids based on physical principles. Ferrofluids are liquids containing magnetic particles that react to an external magnetic field without ...
Torsten Hadrich, Dominik L Michels
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Ferrofluid mediated nanocytometry
Lab Chip, 2012We 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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