Results 261 to 270 of about 78,793 (307)
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Magnetization of two-dimensional magnetic fluids
Journal of Physics: Condensed Matter, 2008The influence of polydispersity on the magnetization of two-dimensional dipolar discs with short-range repulsive interaction is studied by means of Monte Carlo simulations and a high field approximation perturbation theory. Within the framework of perturbation theory an analytical expression is derived for the magnetization of monodisperse and ...
T, Kristóf, I, Szalai
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Transactions of the American Institute of Electrical Engineers, 1951
SINCE THE ANNOUNCEMENT of the magnetic fluid by J. Rabinow1 in 1948, several manufacturers have been producing magnetic fluid clutches for use primarily in servomechanisms. Though some manufacturers also have produced designs for breaking service, the author knows of no instance where the magnetic fluid has been used for absorption-dynamometer ...
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SINCE THE ANNOUNCEMENT of the magnetic fluid by J. Rabinow1 in 1948, several manufacturers have been producing magnetic fluid clutches for use primarily in servomechanisms. Though some manufacturers also have produced designs for breaking service, the author knows of no instance where the magnetic fluid has been used for absorption-dynamometer ...
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Transactions of the American Institute of Electrical Engineers, 1948
A new type of magnetic fluid and several classes of new devices utilizing this fluid have been developed at the National Bureau of Standards. One application of this fluid has been in electromagnetic clutches, but the electro-magnetically controlled mixture offers promise for other uses also.
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A new type of magnetic fluid and several classes of new devices utilizing this fluid have been developed at the National Bureau of Standards. One application of this fluid has been in electromagnetic clutches, but the electro-magnetically controlled mixture offers promise for other uses also.
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Magnetization Process of Magnetic Fluid
IEEE Translation Journal on Magnetics in Japan, 1985The magnetization curves of magnetic fluids in liquid and frozen states, together with magnetic field cooling effects and particle concentration dependences, are reported. Fluids were frozen in liquid nitrogen under a 3.6 kOe field, and magnetization curves measured as a function of the angle Q (= 0, 45, 90°) between the field during freezing and the ...
M. Setogawa +4 more
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Magnetic fractionation of magnetic fluids
Journal of Magnetism and Magnetic Materials, 2000The properties of magnetic nanoparticles in magnetic fluids often exhibit a broad distribution, so in many applications only a small number of particles contribute to the desired magnetic effect. In order to optimize magnetic fluids for applications, preference is given to methods that separate the nanoparticles on the basis of their magnetic ...
Thomas Rheinländer +3 more
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Raman spectroscopy in magnetic fluids
Biomolecular Engineering, 2001In this work Raman spectroscopy was used to investigate uncoated magnetic fluids (UMF's) and coated magnetic fluids (CMF's). The coating agents were N-oleoylsarcosine, dodecanoic acid, and ethoxylated polyalcohol. The Raman probe is the hydroxyl (OH) group chemisorbed at the magnetic nanoparticle surface and the measurements were performed in the ...
P C, Morais +3 more
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Research of Computation about Magnetic Fluid under Magnetic Fluid
2011 First International Conference on Instrumentation, Measurement, Computer, Communication and Control, 2011The distribution and shape of magnetic fluid can be influenced by the adding magnetic field. The magnetism of magnetic fluid can be presented by the adding magnetic field. At the same time, the magnetism can influence the distribution of the adding magnetic field.
Meng Zhao, Jibin Zou
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Binary mixtures of magnetic fluids
Physical Review E, 2003We study a binary mixture of a van der Waals fluid and a ferromagnetic fluid at zero magnetic field on the basis of the mean field Ising fluid model and the van der Waals theory with quadratic mixing rules. Depending on three reduced parameters, the phase diagram shows a surface of magnetic phase transitions and lines of tricritical points, critical ...
W, Fenz, R, Folk
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Convective instability of magnetic fluids
Physical Review E, 2004A theoretical investigation of the convective instability problem in the thin horizontal layer of a magnetic fluid heated from below is carried out. The effects of the relaxation time tau and the vortex (rotational) viscosity xi are considered and discussed.
P N, Kaloni, J X, Lou
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NMR-Characterization of Magnetic Fluids
Zeitschrift für Physikalische Chemie, 2006Summary 31P-NMR spectra have been measured on aqueous solutions and gels of phosphorylated polyvinyl alcohol in absence and in presence of dispersed magnetic nanoparticles. In this system, the rotational diffusion is still rapid enough for a sufficient averaging of the CSA tensor of the 31P nucleus.
Langer, A., Mayer, Christian
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